Yasser Zedan

McGill University | McGill · Department of Mining and Materials Engineering

The present study focuses on the dry and wet end milling of three distinct Aluminum 7075 alloys: A7075, A7075–Sc (with a 0.18% Sc addition), and A7075–Li–Sc (containing 2.2% Li and 0.18% Sc additions). The main objective is to explore how cutting parameters (cutting speed and feed rate), heat treatment, alloy composition, and cooling methods influe...

The present study was performed on an Al-6% Cu-0.7%Si alloy, and 319 and 356 alloys following different heat treatments. The main task was to evaluate the drilling and tapping characteristics of the Al-Cu alloy with respect to the Al-Si based 319 and 356 alloys. The drilling work was carried out on a Huron K2X8five CNC machine at 15,000 rpm with co...

The hexagonal close-packed (HCP) crystal structure of Mg alloys lead to poor formability as well as other undesirable mechanical behaviors in an otherwise highly sought-after alloy for commercial use. This study investigates the evolution of microstructure, texture, corrosion and mechanical behaviors in Mg–Zn–Mn (ZM31) alloy after processing using...

Magnesium and its alloys have tremendous potential as biodegradable implant materials but finding the right compromise between corrosion resistance and mechanical properties is an ongoing investigation. This study utilized equal channel angular pressing (ECAP) to fabricate Magnesium-ZX 30 alloy with a refined uniform microstructure. ECAP processing...

The present study was performed on three versions of 7075 alloy to which Sc or Sc + Li was added. The alloys were subjected to various aging treatments. The microhardness results show that the highest value of hardness was achieved when the alloy containing Li + Sc was aged at 120 °C for 24 h whereas the minimum level was exhibited by the base allo...

In this study, the effects of heat treatment on the microstructure and strength (micro-hardness) of an aluminum–lithium (Al-Li) base alloy containing copper (Cu) and scandium (Sc) were investigated, with a view to enhancing the alloy performance for aerospace applications. The heat treatment conditions were investigated to understand the precipitat...

The main objective of this contribution was to determine the impact of magnesium (Mg) concentration and solidification rate (about 800 °C/s) on the mechanical properties of commercial A380.1 die-cast alloy. Respective amounts of 0.10%, 0.30%, and 0.50% Mg were used to establish their influence on the main tensile properties, namely, the ultimate li...

The influence of the trace elements Pb, Bi, and Sn on the microstructure and mechanical properties of Sr-modified and grain-refined Al-10.8%Si-2%Cu-based alloys was investigated in both as-cast and heat-treated conditions. The results show that individual addition of Pb has no significant effect on the microstructure of the Al-10.8%Si-2%Cu alloy in...

The purpose of this study is to investigate the potential of zirconium (Zr) and nickel (Ni) in enhancing the strength of 319-type cast alloys at high temperature. The high-temperature testing was performed on tensile bars either in the as cast or T6 tempered (190 °C/2h) condition. High-temperature tensile tests were performed at 25, 190, 250 and 30...

In the present study, the statistical design of experiments (DOE) method was applied to study and control the properties of near-eutectic Al-11%Si alloys. In this study, we developed regression equations between response variables, including hardness, yield stress, ultimate tensile stress, elongation, total cutting force, cutting power, and tool li...

The present study was undertaken to examine the effect of iron, manganese, copper and magnesium on the microstructural characteristics of Al-11%Si-2%Cu-Mg-based alloy referred to as 396 under different working conditions. The results show that strontium (Sr) has high affinity to react with magnesium (Mg), resulting in reduced effectiveness as eutec...

Billets of pure Mg were processed using two ECAP dies with internal channel angle of 90º and 120º for 4-passes of route Bc at 225 ºC. Finite element analysis was used to investigate the deformation behavior of Mg billets. Electron back-scatter diffraction was utilized to analyze the microstructural evolution and the crystallographic texture of the...

The present study was conducted on the machinability of the 396 alloy (containing approximately 11% Si) and the B319.2 alloy mainly to emphasize the effects of Fe-intermetallics, i.e., α-Fe, β-Fe, and sludge. The results demonstrate that the presence of sludge in the form of hard spots has a significant effect on cutting forces and tool life, in th...

The present study was carried out on B319 alloy modified with about 180 ppm Sr. To this alloy, Ca (0–500ppm) and Bi (0.1–1.0%) were added. Their deleterious effects on the eutectic Si characteristics (as-cast and solution heat-treated conditions) as well as tensile properties under the same conditions plus T6 temper were investigated. The results s...

The addition of small but effective amounts of free-machining elements to Al–Si casting alloys significantly improves the machinability of these alloys. These added elements, which are softer and have a lower melting point than the matrix alloy, form as small globules dispersed in the microstructure of the aluminum casting. In this form, the disper...

This study was undertaken to emphasize the influence of Sn and Bi addition on the machinability of Sr-modified, grain-refined, and heat-treated Al–Si B319 and 396 alloys. Drilling and tapping tests were conducted to examine the cutting forces, tool life, tool wear, built-up edge evolution, and chip shape. Microstructures were examined using optical...

The first part of this work was to explore the development of residual stresses in I-4 and V-6 engine blocks made of B319.1 alloy using the sectioning technique. The results suggest that there is refinement in the microstructure due to an increase in cooling rate along the cylinder. The developed residual stresses were found to be tensile for both...

In this study, the results pertaining to the influence of various metallurgical parameters on the tensile properties of Al–Si–Cu–Mg 354-type casting alloys are presented. This is discussed with an emphasis on acquiring an insight regarding the mechanical limits of Al–Si–Cu–Mg 354-type alloys in the context of these parameters, and to obtain an unde...

The present research work aimed at evaluating the effect of Ce and La rare earth (RE) additions on the formation of intermetallics in an Al-8.0Si-2.4Cu-0.4Mg-0.4Fe-0.6Mn-0.15Ti alloy (coded D0). These alloys were solidified at a rate of ~0.7°C/s. Microstructural analyses revealed the presence of two types of RE-containing intermetallic phases: (i)...

In this work, the feasibility test of friction stir processing (FSP) of 1.5-mm-thick austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate was performed using tungsten carbide tool. Applied FSP parameters (advance speed 50 mm/min, rotation speed 300 rpm, axial force 20 kN, tilt angle 1.5°) allowed to perform FSP...

The present study was performed on A356 and A413 alloys containing (6–11) %Si. Measured amounts of high-purity La and Ce were added to the molten metal that was allowed thereafter to solidify at a slow rate (~ 0.8 °C/s). The results show that the addition of RE metals (La + Ce) up to 3 wt% leads to an increase in the freezing range through an incre...

The present study was performed on A356 and B319 alloys in mechanically stirred or degassed condition. Melts were Sr-modified and grain-refined. Hydrogen content was varied from less than 0.1 ml/100 g Al to ∼0.4 ml/100 g Al; Fe was increased to 0.8% in B319 alloy. Lanthanum and cerium were added as 99.5% pure metals. Two main techniques were used t...

This study presents a comprehensive evaluation of Equal Channel Angular Pressing (ECAP) processing on the structural evolution and mechanical properties of AA2xxx aluminum alloy. Finite element analysis (FE) was used to study the deformation behavior of the AA2xxx billets during processing in addition investigate the strain homogeneity in the longi...

In the current study, a series of forty-two cast Al–Si–Cu–Mg -based alloys with additions of transition metals (V, Cr, Ni) and rare earth (RE) metals (La, Ce) were prepared and mechanically tested in the as-cast, T5, T6 and T7 heat treatment conditions. The microstructures were investigated using optical microscopy, scanning electron microscopy (SE...

The 3rd generation of aluminum–lithium (Al–Li) alloys provides a desirable combination of high mechanical properties and low density compared to their traditional counterparts, exempt of lithium. Therefore, providing a reliable joint between new and conventional aluminum alloys is crucial for making hybrid structures. The present study focuses on i...

This article discuss the effects of heat treatment and lubrication modes on the machinability of A356 alloy (Al–Si–Mg), the alloy is studied as-received, with solution heat-treated alloy (SHT) as well as with solution heat-treated and then aged at 155 °C, 180 °C, and 220 °C. In the course of machinability evaluation, several criteria including cutt...

The current study presents a detailed investigation for the equal channel angular pressing of pure copper through two regimes. The first was equal channel angular pressing (ECAP) processing at room temperature and the second was ECAP processing at 200 °C for up to 4-passes of route Bc. The grain structure and texture was investigated using electron...

Referring to extensive use of aluminum alloy (AA) 6061 in various types of industrial divisions, adequate knowledge of factors governing machinability aspects of AA 6061 under different heat treatment conditions (T6, T4, and T651) is important. This subject has received limited attention in the literature. Therefore, surface roughness, cutting forc...

The present article reviews a large number of research publications on the effect of mischmetal (MM), rare earth metals (RE), La or Ce, and combinations of La + Ce on the performance of Al-Si cast alloys mainly 319, 356, 380, 413, and 390 alloys. Most of these articles focused on the use of rare earth metals as a substitute for strontium (Sr) as a...

The effect of laser wave modes on the fatigue behavior of laser cold-wire welding made of 4.8 mm thick AA6005-T6 aluminum alloy was investigated using continuous and pulsed wave lasers. Due to the inherent differences in these two wave laser modes, different welding parameters were used, while keeping the interaction time constant. The mechanical p...

In this work the feasibility test of friction stir processing (FSP) of 1.5 mm thick austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate was performed using tungsten carbide tool. Applied FSP parameters (advance speed 50 mm/min, rotation speed 300 rpm, axial force 20 kN, tilt angle 1.5°) allowed to perform FSP t...

Today’s metal matrix composites are widely used due to their excellent properties, which are useful for high-performance applications in the automotive and aerospace industries. Furthermore, improving the machinability of these composites is vital for improving product quality in the manufacturing process. In this research, various adaptive network...

This article discuss the effects of heat treatment and lubrication modes on the machinability of an A356 alloy (Al-Si-Mg); the alloy is studied as-received, with solution heat-treated alloy (SHT) as well as with an alloy that is solution heat-treated and then aged at 155, 180 and 220 °C. In the course of machinability evaluation, several criteria i...

The present work was performed on three types of alloys, viz., Al-6% Cu (coded HT200), 319 alloy, and 356 alloy using dull inserts. The results show that the shape of the dull inserts and cutting characteristics varied from one insert to another and hence it was difficult to obtain reproducible results. Due to the bad shape of the dull inserts, the...

The present study was performed on an Al-6% Cu-0.7%Si alloy, and 319 and 356 alloys following different heat treatments. The main task was to evaluate the drilling and tapping characteristics of the Al-Cu alloy with respect to the Al-Si-based 319 and 356 alloys. The drilling work was carried out on a Huron K2X8five CNC machine at 15,000 rpm with co...

The work presented here was carried out on an Al-6%Cu-0.7%Si alloy (used in as cast, T5 and T7 aged conditions), in comparison with B319.0 (T7 by treated at the two places where treatment appears) and A356.0 (T6 treatment) alloys. Wet milling was carried out on 15 blocks of each alloy using new inserts for 120-m machining distance. A total of 75 bl...

Today's metal matrix composites are widely used due to their excellent properties, which are useful for high-performance applications in the automotive and aerospace industries. Furthermore, improving the machinability of these composites is vital for improving product quality in the manufacturing process. In this research, various adaptive network...

Surface roughness is an important output in manufacturing processes. It has effect on the performance of mechanical components and the fabrication cost. In this research work, an experimental investigation was conducted to determine the effects of cutting condition on surface roughness and particle emission while milling Al-20􀛻􀜏􀫛Si metal matrix com...

Comparable microstructures and mechanical properties are obtained for the different AA2139-T8/AA7020-T651 joints welded in the range 600–1000 rev. min⁠−1 / 250–550 mm.min⁠−1 as rotation and advance speeds. Joints exhibit tensile properties as good as 77%–79% of the yield strength and 88%–96% of the ultimate tensile strength of the AA7020 base mater...

Sustainable manufacturing regulations are pushing manufacturing towards decreasing of manufacturing hazards including microparticles and ultrafine particles. Machining process such as milling produces dust that can be harmful for operators’ health. The emission of this dust depends on workpiece materials (microstructure, mechanical properties) and...

Free download ==> https://authors.elsevier.com/a/1XGlnWK0QG2a5 ********************************************************* The fatigue properties of gas metal arc welded and friction stir welded assemblies made of aluminum alloy AA6061-T6 structural extrusions were examined. The mechanical performances of welded joints were obtained using uniaxial t...

Different tool geometries were used to investigate the joining of aluminum alloys (AA2198 to AA2024) by friction stir welding (FSW). Three shoulder profiles (flat, raised spiral, and raised fan) and five different pin profiles (cone, half threaded cylindrical, straight cylindrical, tapered cylindrical and square) were selected. Preliminary investig...

Friction stir welding of dissimilar heat treatable 2139-T8 and 7020-T651 aluminum alloys was investigated in a large operating window of industrials welding parameters. Detailed microstructural and local mechanical characterizations have shown that despite consistency in the macroscopic tensile behavior of the different processed joints, local disc...

In industry, the sliding mechanical systems are subject to friction and wear phenomena. These phenomena can be the origin of a reduction of the efficiency of the mechanical system even to be responsible for its incapacity. Generally, the materials of the parts which are moving relative (tribological couple) of these systems are low alloy steels and...

In the present research an appropriate tool design is developed for joining of AA2198-T3 and AA2024-T3, subsequently the influence of rotational and traverse speed for the selected tool on the joint tensile properties is evaluated. Three shoulder profiles (flat, spiral, and fan) and five different pin profiles (tapered cylindrical, straight cylindr...

The tool geometry in friction stir welding (FSW) is a critical parameter to produce reliable and consistent joints, especially when it comes to joining dissimilar alloys with different mechanical and thermal properties. The aim of the present work is to investigate the effect of FSW tool design on the mechanical characteristic of as-welded AA2198(T...

This study was conducted with the intention of investigating a new experimental alloy, namely the 396 alloy which belongs to the Al-Si near-eutectic cast alloy group and contains about 11%Si. In the light of the above, the main purpose of the work is to report on the changes observed in the mechanical and/or machinability criteria resulting from th...

This chapter deals with a study conducted with the intention of investigating a new experimental alloy, namely the 396 alloy, which belongs to the aluminum-silicon (Al-Si) near-eutectic cast alloy group and contains about 11% Si. In light of the above, the main purpose of this chapter reports on the changes observed in the mechanical and/or machina...

This paper reports on the effect of artificial aging on the machinability of Al-7Si-Mg (A356) cast alloys for the as-received alloy, solution heat-treated (SHT) alloy and then aged SHT alloy at 155, 180, and 220 °C, respectively. The influence of heat treatment on the machinability of the alloys studied was considered using innovative criteria such...

Aluminum alloys are widely used in several applications. Cast alloys are usually considered to be brittle materials leading to short chip formation during machining. Although they can be produced near net shapes, products made of these alloys very often require some machining. The purpose of this study is to evaluate the machinability of A319 and A...

The main objective of this research is to investigate the effects of the cutting fluid and application mode (dry, mist and flood drilling) and its interaction with cutting parameters on part quality during the drilling of 6061-T6 aluminium alloys. The part quality criteria include the burr form and sizes, and surface finish as well as the cutting f...

The burr formation mechanisms strongly depend on the machining methods as well as cutting conditions. Cutting fluids play significant roles in machining, including reduction of friction and temperature. Using a cutting fluid, however, degrades the quality of the environment and increases machining costs. In the present work, initially the effects o...

The motivation to replace steel and cast iron with Al-Si alloys in automotive components stems from an ongoing attempt to improve fuel economy and reduce emissions. In the light of these objectives, a study was carried out to determine the influence of metallurgical parameters such as chemical composition, microstructure and morphology of second ph...

The quality of the surface dictates the functional performance and service-life of produced parts. The main objective of the present paper is to investigate the effect of different lubrication types and modes on the integrity of the surface produced during high speed drilling of 6061-T6 aluminum alloy. Surface integrity index investigated includ...

The quality of the surface dictates the functional performance and service-life of produced parts. The main objective of the present paper is to investigate the effect of different lubrication types and modes on the integrity of the surface produced during high speed drilling of 6061-T6 aluminum alloy. Surface integrity index investigated include s...

IntroductionExperimental procedureResults and DiscussionsConclusion Acknowledgements

This study was conducted with the intention of investigating a new experimental alloy, namely the 396 alloy which belongs to the Al-Si near-eutectic cast alloy group and contains about 1 l%Si. In the light of the above, the main purpose of the work is to report on the changes observed in the mechanical and/or machinability criteria resulting from t...