K. Muszka

K. Muszka
AGH University of Science and Technology in Kraków | AGH · Faculty of Metals Engineering and Industrial Computer Science

MEng, PhD, DSc

About

131
Publications
8,860
Reads
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623
Citations
Additional affiliations
June 2018 - present
AGH University of Science and Technology in Kraków
Position
  • Professor (Associate)
June 2010 - May 2018
AGH University of Science and Technology in Kraków
Position
  • Professor (Assistant)
July 2008 - July 2011
The University of Sheffield
Position
  • PDRA

Publications

Publications (131)
Article
The extraordinary combination of strength and ductility of multilayered materials makes them attractive in the various applications and industries (military, aerospace, energy industry etc.). In the present work, the investigated materials were joined into multilayered sheet using the explosive welding method. The three-layer material was made of t...
Article
Thin profile wires made of stainless steels are widely used for production of industrial screens used for filtration and separation processes. Industrial screens made of resistance spot welded thin profile wires are used e.g. in baskets for centrifuges or filtration screens and find a wide range of applications in various branches of the industry (...
Article
The paper presents the selected problems in production chain of large-size rings for the offshore industry. There are two goals of the technology: 1) to obtain the correct shape of the rings, 2) to achieve required properties. A significant problem in the processes of large size forgings production is a proper prediction of the as-cast structure de...
Article
Screens made of drawn and spot-welded stainless steel precise profile wires are widely used to separate particles from fluids during various industrial applications. Increased durability and surface quality of these products are critical in maximising their wear resistance and extending the screen service life. Therefore, the paper discusses the de...
Article
The goal of this research was to propose a combined modeling approach to design a stable alloy based on the FeMnNiCoMo system. First, phase stability calculations were made using valence electron calculations (VEC) and density functional theory (DFT) methods. The effect of Mo alloying in the FeMnNiCo system was investigated by calculating character...
Article
Full-text available
Development of a reliable model of phase transformations in steels presents significant challenges, not only metallurgical but also connected to numerical solutions and implementation. The model proposed in this paper is dedicated to austenitic transformation during heating and ferritic transformation during cooling. The goal was to find a solution...
Article
Full-text available
In the industrial practice—especially in the reverse rolling mills—heavy section products with stable mechanical properties (YS, UTS) and ductility (A, Z) but with an impact toughness (KV) at too low levels are often observed. The results presented in the present work concern the relationship between the parameters of the cooling process of rolled...
Article
Full-text available
The paper presents the analysis of hot deformation behavior of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) alloy using the theory of dynamic material modeling (DMM) based on hot compression tests performed to a total true strain of 1 at the strain rates from 0.01 to 100 s⁻¹ and at the temperatures within the range between 800 and 1100 °C. The processing maps acco...
Article
Full-text available
The mechanical behaviours of microalloyed and low-carbon steels under strain reversal were modelled based on the average dislocation density taking into account its allocation between the cell walls and cell interiors. The proposed model reflects the effects of the dislocations displacement, generation of new dislocations and their annihilation dur...
Article
The mechanical behaviors and microstructures of severely deformed microalloyed austenitic M_A and ferritic M_F steels were analyzed in wires drawn from wire rods (6.5 mm in diameter) down to the final diameter of 0.75 mm. The deformation induced microstructures in the cold drawn wires under “static” (low speed wire drawing) and “dynamic” (high spee...
Article
Full-text available
This study addresses some aspects regarding a computer modelling based on three-dimensional Frontal Cellular Automata (FCA) for the simulation of ultrafine-grained (UFG) microstructure development in purpose-designed microalloyed austenite model alloy i.e. FCC structure. Proposed in the present study model is a step forward towards understanding th...
Article
Full-text available
The aim of this work was to study the impact of various fabrication methods used to prepare high entropy alloys based on the AlFeMnNbNiTi system. Chemical composition was customized to ensure a solid solution structure with precipitation of the Laves phase. The three manufactured alloys were prepared by melting, but with the use of various input ma...
Article
Full-text available
In the presented work two grades of steel i.e. microalloyed ferrite (M_F) and microalloyed austenite (M_A) where subjected to the grain refinement processes using MaxStrain system and thermomechanical rolling. The wide range of grain size, starting from 200 µm down to submicrometer level was produced in this way. The specimens of both steels were s...
Article
Full-text available
The experimental and numerical study of the effects of the recrystallization behavior of austenite model alloys during hot plate rolling on reverse rolling is the main goal of the paper. The computer models that are currently applied for simulation of reverse rolling are not strain-path-sensitive, thus leading to overestimation of the processing pa...
Article
Full-text available
This study presents an effective technique for taking advantage of the full-field measurement method of Digital Image Correlation (DIC) for the assessment of the strain distribution during the metal forming process when the strain path change was performed. The applied methodology is based on the combination of a numerical simulation for the stress...
Article
Full-text available
In this study, large-scale molecular dynamic simulations were performed to analyze the dislocation substructure interaction with various types of obstacles present in microalloyed steels during severe plastic deformation. Specifically, fully functional numerical models of the atomic upsetting test were developed, with particular emphasis on the pre...
Article
Development and verification of a parallel version of the micro-scale cellular automata (CA) static recrystallization (SRX) model is the main goal of the present research. Firstly, a framework of sequential CA-SRX model is presented. Then, crucial modifications are developed and introduced to the model to handle parallel execution. A particular att...
Article
Full-text available
Preparation of a reliable 3D digital material representation model, for further finite element formability calculations, based on series of 2D images from serial sectioning procedure is the main goal of the paper. Within the work series of 2D SEM/SE2 images of a ferrite-pearlite microstructure were accompanied by an EBSD investigation to clearly id...
Article
Full-text available
Multilayered materials have been gathering much interest in the last decades because of their possible extraordinary combination of strength and ductility. The significance of the mechanical properties of metallic multilayers becomes from both the importance of their possible applications and the need to understand the influence of the length scale...
Article
Full-text available
The goal of the current work was to check the possibility of the use of various modelling methods of multicomponent systems calculations, for a design of optimum composition of a new high entropy alloy. Three modelling methods were utilized and discussed in the light of production of an alloy with solid solution of BCC and FCC phases as well as Lav...
Article
Full-text available
Stainless steel grades – both austenitic and ferritic – find a wide critical applications due to their superior properties such as high strength, excellent corrosion resistance and good biocompability. Manufacturing e.g. medical equipment and implants made of stainless steel grades often involves wire drawing processes. Further improvement of mecha...
Article
Full-text available
Multilayered materials can be characterized by the extraordinary combination of the strength and ductility. Because of that in the last decades many works were focused on the development of plastic deformation processes of such materials. However, metal forming processes of multilayered materials face many new problems because of its inhomonegeity...
Article
Innovative incremental bulk forming (IBF) process dedicated to form integral elements for the aerospace industry is presented in the paper. Particular attention is put on analysis of advantages and disadvantages of this process, as well as on detailed evaluation of material flow characteristics across different length scales. Thus, a multi scale nu...
Conference Paper
The strain-induced precipitation process of Nb(C,N) is widely used in microalloyed steels to improve the strength and ductile-to-brittle transition temperature. During thermomechanical processing of these steels, disperse second-phase particles precipitate and effectively stop the static recrystallization progress. As an effect, unrecrystallized au...
Article
The Ti–6Al–4V alloy wires were plastically deformed using the accumulative angular drawing (AAD) process at room temperature with a maximal logarithmic strain ε ~ 0.51. Microstructure and microtexture evolution and inhomogeneity of the Ti alloy wires were investigated quantitatively using the electron backscattered diffraction technique within the...
Article
The work is focused on the concept of identification of critical parameters of the random cellular automata finite element (RCAFE) fracture model. The investigated parameters are related to the fracture initiation criteria at the micro scale level for further simulation of the dual phase steel behaviour under deformation conditions. Parameters for...
Article
Thermomechanical hot rolling processes are often realized using reverse rolling stands, where the rolled stock is fed forward and backward through the rolling gap. During those processes, material undergoes several strain reversals that significantly alter microstructure evolution of austenite with respect to continuously rolled counterparts. In Nb...
Article
This paper presents a summary of a preliminary research aimed at producing ultrafine-grained (UFG) and heterogeneous microstructure in microalloyed steel and testing these materials under dynamic loading conditions (strain rates 800 s ⁻¹ and 1800s ⁻¹ ). The UFG and bimodal-structures, due to grain size, structural composition or morphology of struc...
Article
Multilayered metal‐to‐metal (MM) composites have been gathering much interest in the last decades because of its extraordinary mechanical properties. In the present study, the microstructural changes and mechanical behavior of two grades of microalloyed steels, that is, ferrite (M_F) and austenite (M_A), in the MM composite systems have been invest...
Article
Full-text available
The current work is aimed at providing understanding on the effect of deformation history on the dynamic response of austenite. Approach to study the influence of deformation mode on the subsequent high strain rate behavior of austenite is presented. Specially designed austenite model alloy is subjected to plastometric tests with two deformation ro...
Article
Full-text available
Bimetals produced by explosive welding and subjected to surface mechanical attrition treatment (SMAT) were investigated. It is expected that the way of manufacturing and the morphology of nano- crystalline and multilayered materials obtained by the "top down" group of methods such as severe plastic deformation (SPD) has significant influence on the...
Article
Taylor impact experiments were conducted to examine the mechanical behavior of four grades of structural steels. The dynamic mechanical response of microalloyed (HSLA), bainitic (MnB), low carbon (LC) and interstitial free (IF) steels at high strain rate loading were investigated systemically through Taylor impact test, over the range of impact vel...
Conference Paper
Development of the 2D concurrent multiscale numerical model of novel incremental forming (IF) process is the main aim of the paper. The IF process is used to obtain light and durable integral parts, especially useful in aerospace or automotive industries. Particular attention in the present work is put on numerical investigation of material behavio...
Article
Full-text available
In the present work, the effect of strain path reversals on dynamic transformation (DT) above Ae3 temperature was studied using an API grade X-70 microalloyed steel deformed by torsion with single and multiple strain path reversals. The results revealed the important role played by strain path reversals on influencing the evolution of austenite gra...
Article
Abstrakt Studie prezentuje výsledky teoretického modelování vývoje mikrostruktury při víceoperačním zápustkovém kování na bucharu, které se skládá z předkování několika údery a následného dokování v zápustce. Cílem modelování byla predikce parametrů austenitu ve stavu po kování před řízeným ochlazením a mikrostrukturní parametry produktů transforma...
Article
Full-text available
In the present study, we have discussed the selected problems of microstructure development during the whole manufacturing process, i.e. continuous casting, thermomechanical processing, and cold metal forming of the microalloyed steels wires. In the investigated steels, the microstructure development was controlled by the history of deformation and...
Conference Paper
The subject of the study is theoretical modeling for analysis of the microstructure development in progressive droughts of the forging sequence aimed at prediction of the parameters of austenite in as-forged condition, prior to and after direct cooling. Based on numerical calculation of temperature, strain and strain-rate, dynamic recrystallization...
Article
Full-text available
Recently developed accumulative angular drawing (AAD) combined with wire drawing (WD) and wire flattening (WF) processes were employed to effectively induce severe plastic deformation (SPD) effects into drawn wires. The influence of combined effects of area reduction, bending, shearing, and burnishing on the accumulated deformation energy and micro...
Article
The work is focused on hydroforming of T-shape connector for high temperature applications. A seamless part for use in industrial applications was formed in a high pressure liquid extrusion process. Due to the occurrence of faults in the final products, numerical simulations were conducted to reveal the possible sources of such failures. The numeri...
Article
The potential of discrete cellular automata technique to predict the grain refinement in wires produced using combined metal forming process is presented and discussed within the paper. The developed combined metal forming process can be treated as one of the Severe Plastic Deformation (SPD) techniques that consists of three different modes of defo...
Article
During industrial hot metal forming processes, deformed metal undergoes complex strain history that in most cases is non-linear. This very often leads to improper prediction of microstructure evolution and properties of final metal forming products by the computer models that are used currently as in most cases, they are not strain-path sensitive....
Article
In the present work Digital Material Representation (DMR) approach was utilized to simulate the deformation behavior of the two phase Ti-6Al-4V alloy. DMR models of the two phase structure, containing different morphologies of alpha grains within a beta matrix – lamellar and equiaxed, were created. Each phase was then separated and different mechan...
Chapter
Deformation processes of microalloyed steels, both during hot and cold processing, are characterized by complex interactions between fine strain-induced precipitates and deformation activated movement of dislocations. Disperse particles that are either forming during the deformation at elevated temperature or are already present in the material at...
Chapter
Introduction of controlled inhomogeneity of microstructure as an effect of high energy accumulation brings about new possibilities in obtaining enhanced properties of the metal forming final products. The present chapter will discuss utilization of severe plastic deformation (SPD) to produce ultrafine grained structures using top-down approach in n...
Article
experimental studies in the light of deformation inhomogeneities. Modern multiphase steels were used as their mechanical properties are very sensitive and strictly dependent on the combination of microstructure components with different levels of their mechanical responses. DIC as a precision tool has been used to investigate the deformation inhomo...
Chapter
Deformation processes of microalloyed steels, both during hot and cold processing, are characterized by complex interactions between fine strain-induced precipitates and deformation activated movement of dislocations. Disperse particles that are either forming during the deformation at elevated temperature or are already present in the material at...
Article
The behaviour of the highly reactive interfaces during the processing of nanocrystallised multilayered materials has been investigated in the present work. Conditions leading to the formation of strain localisations around the oxidised interfaces during the thermomechanical stage of the duplex processing route have been investigated using multileve...
Article
Full-text available
The effect of forward and reverse torsion on flow behavior and microstructure evolution, particularly dynamic and static spheroidization, on Ti-6Al-4V with an alpha lamella colony microstructure was studied. Testing was undertaken sub beta transus [1088 K (815 °C)] at strain rates of either 0.05 or 0.5 s−1. Quantitative metallography and electron b...
Article
In the present work cyclic torsion test was used to simulate hot plate rolling process in order to study the effect of strain reversal on non-recrystallisation temperature using unalloyed and microalloyed austenite model alloys. It was found that the amount of strain reversal directly influences both static recrystallisation and strain-induced prec...
Article
Studies of the effects of inhomogeneity of UFG (ultrafine-grained) microstructure evolution have been performed on severely deformed specimens produced by AAD (angular accumulative drawing), followed by wire drawing and wire flattening processes i.e. "top-down" systems of the grain refinement process. In this paper, deformation behavior and size ef...
Article
Full-text available
The effect of simple strain path changes as well as post-deformation continuous cooling rate during thermomechanical-controlled processing of microalloyed steel was studied using laboratory physical simulation. The phase transformation characteristics were directly analyzed by dilatometry under various cooling rates. The microstructures of the tran...
Article
The processing difficulties and enhanced ductility of UFG (ultrafine-grained) microalloyed steels are currently one of the most stimulating challenges due to problems in practical applications as structural materials. A key challenge is the ability to represent the real behavior of such modern structural material using multiscale approach. In this...
Article
This study addresses some aspects regarding mechanical behavior of bcc structures characterized by high grain refinement level developed using large plastic deformation. The fundamental mechanisms governing the behavior of the microalloyed steels at wide range of deformation conditions at nano, micro, meso-meter scale and at the continuum are discu...
Article
Full-text available
Dynamic strain-induced transformation (DSIT) in a low-carbon microalloyed steel was studied by hot cyclic torsion to understand the interactions between DSIT and strain path reversals, and the subsequent microstructure evolution when subjected to continuous cooling. The critical strain for DSIT (εc,DSIT) can be determined by analysing the dynamic s...