Enhanced strength-ductility of CoCrFeMnNi high-entropy alloy with inverse gradient-grained structure prepared by laser surface heat-treatment technique

2021 ◽  
Author(s):  
Bohong Zhang ◽  
Jie Chen ◽  
Pengfei Wang ◽  
Bingtao Sun ◽  
Yu Cao
Keyword(s):  
Heat Treatment ◽  
Surface Heat ◽  
Laser Surface ◽  
High Entropy Alloy ◽  
Treatment Technique ◽  
High Entropy

scholarly journals Influence of V and Heat Treatment on Characteristics of WMoNbTaV Refractory High-Entropy Alloy Coatings by Mechanical Alloying

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 265
Author(s):  
Chun-Liang Chen ◽  
Sutrisna
Keyword(s):  
Heat Treatment ◽  
Mechanical Alloying ◽  
Annealing Treatment ◽  
High Energy ◽  
304 Stainless Steel ◽  
Homogeneous Distribution ◽  
High Entropy Alloy ◽  
Solid Solution Phase ◽  
High Entropy ◽  
Steel Substrates

Refractory high-entropy alloy (RHEA) is one of the most promising materials for use in high-temperature structural materials. In this study, the WMoNbTaV coatings on 304 stainless steel substrates has been prepared by mechanical alloying (MA). Effects of V addition and subsequent heat treatment on properties of the WMoNbTaV coatings were investigated. The results show that the RHEA coatings with nanocrystalline body-centered cubic (BCC) solid-solution phase were generated by the mechanical alloying process. The presence of the V element promotes a uniform microstructure and homogeneous distribution of composition in the RHEA coatings due to improving alloying efficiency, resulting in an increase of hardness. After the annealing treatment of the RHEA coatings, microstructure homogeneity was further enhanced; however, the high affinity of Ta for oxygen causes the formation of Ta-rich oxides. Annealing also removes strain hardening generated by high-energy ball milling and thus decreases the hardness of the RHEA coating and alters microstructure evolution and mechanical properties.

A new approach to control and optimize the laser surface heat treatment of materials

2018 ◽  
Vol 262 ◽  
pp. 492-502 ◽  
Author(s):  
Sagar V. Telrandhe ◽  
Jayabalan Bhagyaraj ◽  
Sushil Mishra ◽  
Shyamprasad Karagadde
Keyword(s):  
Heat Treatment ◽  
Surface Heat ◽  
Laser Surface ◽  
New Approach

A study of metallurgy and erosion in laser surface alloying of AlxCu0.5FeNiTi high entropy alloy

2019 ◽  
Vol 361 ◽  
pp. 27-34 ◽  
Author(s):  
Anas Ahmad Siddiqui ◽  
Avanish Kumar Dubey ◽  
Christ Prakash Paul
Keyword(s):  
Laser Surface ◽  
High Entropy Alloy ◽  
Surface Alloying ◽  
Laser Surface Alloying ◽  
High Entropy

Fabrication and wear behavior of TiC reinforced FeCoCrAlCu-based high entropy alloy coatings by laser surface alloying

2020 ◽  
Vol 255 ◽  
pp. 123571
Author(s):  
P.F. Jiang ◽  
C.H. Zhang ◽  
S. Zhang ◽  
J.B. Zhang ◽  
J. Chen ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Laser Surface ◽  
High Entropy Alloy ◽  
Surface Alloying ◽  
Laser Surface Alloying ◽  
High Entropy
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