Evolution of mechanical properties and corrosion resistance of Al0.6CoFeNiCr0.4 high-entropy alloys at different heat treatment temperature

2020 ◽  
Vol 244 ◽  
pp. 122700 ◽  
Author(s):  
Shuai Wang ◽  
Yuhong Zhao ◽  
Xiaotao Xu ◽  
Peng Cheng ◽  
Hua Hou
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Corrosion Resistance ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Mechanical Properties And Corrosion

Tailoring Microstructures and Mechanical Properties of AlCoCrFeNiTi0.3 High-Entropy Alloys by Heat Treatment

2013 ◽  
Vol 745-746 ◽  
pp. 768-774 ◽  
Author(s):  
Jun Wei Qiao ◽  
Y.F. Wang ◽  
R.Q. Wang ◽  
J.Y. Shi ◽  
S.B. Sang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Volume Fraction ◽  
Treatment Temperature ◽  
High Entropy Alloys ◽  
Static Compression ◽  
High Entropy ◽  
Bcc Structure ◽  
Microstructures And Mechanical Properties ◽  
Quasi Static Compression

The microstructures and mechanical properties of AlCoCrFeNi0.3 high-entropy alloys (HEAs) are tailored through heat treatment. During heat treatment, the dendrite phase with a body-centered-cubic (bcc) structure transformed into the interdendrite phase with a bcc structure. Due to the element accumulation with higher hardness in the interdendrites and the increase of volume fraction of interdendrites, the average hardness of AlCoCrFeNi0.3 HEAs increased with the heat-treatment temperature, and the highest hardness was 625 HV. After 500 heat treatment, the optimized mechanical properties under quasi-static compression were achieved, and the yielding strength and fracture plasticity were 2.30 GPa and 9 %, respectively. Upon dynamic loading, the mechanical properties of HEAs were greatly enhanced.

Investigation on Mechanical Properties and Corrosion Resistance of Cobalt-Based Alloy Cladding Layer

2019 ◽  
Author(s):  
Zhiyi Jin ◽  
Zhenqiang Yao ◽  
Hong Shen
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Heat Treatment Temperature ◽  
Bending Strength ◽  
Welding Current ◽  
Treatment Temperature ◽  
Welding Parameters ◽  
Micro Hardness ◽  
Tensile And Bending Strength ◽  
Mechanical Properties And Corrosion

Abstract Austenitic stainless steel was cladded with Cobalt-based alloy by means of Tungsten inert gas (TIG) welding to improve the performance of the working parts such as the thrust bearing plates under dynamic loads and corrosive liquid. Specimens were prepared with different welding parameters, namely the cladding current, preheating temperature, inter-layer temperature and post heat treatment temperature, so as to investigate their influence on micro-hardness, as well as tensile and bending strength. It is revealed that the lower welding current coincides with higher micro-hardness as well as tensile and bending strength. The higher inter-layer temperature will result inhigher overlay micro-hardness. The post weld heat treatment temperature influences the bending strength of the overlay weld specimens. In addition, the accumulation of Cr and Ni compounds on weldment surface is found to coincide with higher corrosion resistance in over-layers by means of XRD.

scholarly journals Study on the mechanical properties and corrosion resistance of AlxCoFeNiCr1−x high-entropy alloys

2020 ◽  
Vol 6 (12) ◽  
pp. 1265e2
Author(s):  
Shuai Wang ◽  
Yuhong Zhao ◽  
Peng Cheng ◽  
Qingwei Guo ◽  
Xiaotao Xu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Mechanical Properties And Corrosion
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