Microstructure and Properties of AlCoCrFeNiSi High-Entropy Alloy Coating on AISI 304 Stainless Steel by Laser Cladding

2020 ◽  
Vol 29 (1) ◽  
pp. 278-288 ◽  
Author(s):  
Guozhong Zhang ◽  
Hao Liu ◽  
Xianhua Tian ◽  
Peijian Chen ◽  
Haifeng Yang ◽  
...  
Entropy ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 2 ◽  
Author(s):  
Wenyuan Cui ◽  
Sreekar Karnati ◽  
Xinchang Zhang ◽  
Elizabeth Burns ◽  
Frank Liou

Through laser metal deposition, attempts were made to coat AlCoCrFeNi, a high-entropy alloy (HEA), on an AISI 304 stainless steel substrate to integrate their properties. However, the direct coating of the AlCoCrFeNi HEA on the AISI 304 substrate was found to be unviable due to cracks at the interface between these two materials. The difference in compositional change was suspected to be the source of the cracks. Therefore, a new transition route was performed by coating an intermediate layer of CoFe2Ni on the AISI 304 substrate. Investigations into the microstructure, phase composition, elemental composition and Vickers hardness were carried out in this study. Consistent metallurgical bonding was observed along both of the interfaces. It was found that the AlCoCrFeNi alloy solidified into a dendritic microstructure. The X-ray diffraction pattern revealed a transition of the crystal structure of the AISI 304 substrate to the AlCoCrFeNi HEA. An intermediate step in hardness was observed between the AISI 304 substrate and the AlCoCrFeNi HEA. The AlCoCrFeNi alloy fabricated was found to have an average hardness of 418 HV, while the CoFe2Ni intermediate layer had an average hardness of 275 HV.


2014 ◽  
Vol 41 (3) ◽  
pp. 0303002
Author(s):  
翁子清 Weng Ziqing ◽  
董刚 Dong Gang ◽  
张群莉 Zhang Qunli ◽  
郭士锐 Guo Shirui ◽  
姚建华 Yao Jianhua

Applied laser ◽  
2015 ◽  
Vol 35 (1) ◽  
pp. 1-6
Author(s):  
邹朋津 Zou Pengjin ◽  
董刚 Dong Gang ◽  
姚建华 Yao Jianhua

2020 ◽  
Vol 29 (11) ◽  
pp. 7170-7178
Author(s):  
Hao Liu ◽  
Wenpeng Gao ◽  
Jian Liu ◽  
Xiaotong Du ◽  
Xiaojia Li ◽  
...  

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