Digvijay Singh

Digvijay Singh
National Institute for Materials Science | NIMS · Structural Materials Unit

PhD
Postdoctoral Researcher, NIMS Japan

About

11
Publications
3,223
Reads
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45
Citations
Introduction
Digvijay Singh is currently working as a postdoctoral research scientist in Vibration Control Materials Group at National Institute for Materials Science (NIMS) Japan.
Additional affiliations
April 2022 - present
National Institute for Materials Science
Position
  • Postdoctoral Researcher
July 2017 - January 2022
Indian Institute of Technology Indore
Position
  • Senior Research Fellow
Education
July 2017 - January 2022
Indian Institute of Technology Indore
Field of study
  • Gradient Nanostructured Alloys
July 2015 - July 2017
National Institute of Technology Karnataka
Field of study
  • Materials Engineering

Publications

Publications (11)
Article
This article investigates the microstructure evolution and corrosion response of surface mechanical attrition treated (SMAT) AZ91D magnesium alloy. In-depth transmission electron microscopy and combined isothermal calorimetry and pressure measurement technique, a novel and powerful tool for in situ monitoring of the magnesium corrosion process, are...
Article
Full-text available
The present study investigates the microstructural and passivation behavior of surface mechanical attrition treated (SMAT) AISI 304 stainless steel in a 0.6 M NaCl solution at room temperature. SMAT process, which is more advanced than the classical shot-peening, causes 2-3 times improvement in surface hardness of the steel. Ball size, a vital SMAT...
Article
Full-text available
The surface behaviour of surface mechanical attrition treated (SMATed) and plasma-nitrided AISI 2205 and AISI 304L steels was investigated in the present study. The intersection of the mechanical twins formed the submicron-size rhombic blocks in the surface region of the SMATed AISI 304L steel. However, such microstructural feature was absent in th...
Article
The present study investigates the high-temperature oxidation behaviour of nanostructure surface layered AISI 304L stainless steel. A severely deformed layer of ∼300 μm thickness, consisting of nanoscale grains (∼40 nm size) in the topmost region, is successfully developed using the surface mechanical attrition treatment (SMAT) process. The SMATed...
Article
Full-text available
The present study deals with the properties of boronized and non-boronized low-alloy steel (34CrAlMo5-10). Specimens are characterised using microscopy, various spectroscopic techniques, nanoindentation, surface profilometer, and tribometer. The boronized region contains (i) (Fe, M)2B columns and (ii) matrix between the columns. Nanoindentation stu...
Article
Full-text available
In the present work, tribological behavior of surface mechanical attrition treated (SMAT) AISI 2205 steel was studied under dry and lubricated conditions using different loads. SMAT process parameters were optimized using the Taguchi technique for maximum output response of surface roughness. It was found that the SMAT process altered the surface m...
Article
Full-text available
The surface behaviour of surface mechanical attrition treated (SMATed) and plasma-nitrided AISI 2205 and AISI 304L steels was investigated in the present study. The intersection of the mechanical twins formed the submicron-size rhombic blocks in the surface region of the SMATed AISI 304L steel. However, such microstructural feature was absent in th...
Article
Full-text available
Wear behaviour of the AISI 4140 steel specimens with various surface conditions was tested against the DLC-coated boronized disc of AISI 4140 steel. Specific wear rate and coefficient of friction (COF) of the as-boronized (AB) pins at 100 and 150 N loads were substantially lower than the boronized–polished (B-P) pins. COF of AB pins was in the rang...
Article
Wear behaviour of the AISI 4140 steel specimens with various surface conditions was tested against the DLC-coated boronized disc of AISI 4140 steel. Specific wear rate and coefficient of friction (COF) of the as-boronized (AB) pins at 100 and 150 N loads were substantially lower than the boronized–polished (B-P) pins. COF of AB pins was in the rang...

Questions

Question (1)
Question
Dear Researchers, shall we use DMA for metallic sample (like steel alloys) also for its mechanical property calculation at various temperature and frequency range?

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Projects

Projects (7)
Project
This project is focused on studying the reversible martensitic (γ↔ε) transformation in FMS alloys under cyclic loading.
Project
This project is aimed to study the effect of alloy chemistry, temperature, and strain level on the deformation mechanism of Mn-based austenitic steels. Further, this project focuses on the role of stacking fault energy and Gibbs free energy (△Gγ→ε) on deformed microstructure.