Synthesis and Characterization of NiCoFeCrAl3 High Entropy Alloy Coating by Laser Cladding

2010 ◽  
Vol 97-101 ◽  
pp. 1408-1411 ◽  
Author(s):  
Hui Zhang ◽  
Yi Zhu He ◽  
Ye Pan ◽  
Yin Sheng He ◽  
Kee Sam Shin

The NiCoFeCrAl3 high entropy alloy coating with a little addition of C, Si, Mn, Mo has been succesively synthesized by laser cladding. The results show that simple solution phases of ordered BCC and a small fraction of FCC are obtained with fine equaixed dendrites morphology. Because the fine grain strengthening obtained by rapid solidification and the additived small atomic elements like C, Si further increase the distortion of the solid solution lattice, The microhardness of the coating reached above 800 HV and is 50 % higher than previous study on the similar composition by arc melting technique.

2020 ◽  
Vol 835 ◽  
pp. 155449 ◽  
Author(s):  
Xin Wen ◽  
Xiufang Cui ◽  
Guo Jin ◽  
Xuerun Zhang ◽  
Ye Zhang ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaoyang Ye ◽  
Mingxing Ma ◽  
Wenjin Liu ◽  
Lin Li ◽  
Minlin Zhong ◽  
...  

High-entropy alloys have been recently found to have novel microstructures and unique properties. In this study, a novel FeCoNiCuCr high-entropy alloy was prepared by laser cladding. The microstructure, chemical composition, and constituent phases of the synthesized alloy were characterized by SEM, EDS, XRD, and TEM, respectively. High-temperature hardness was also evaluated. Experimental results demonstrate that the FeCoNiCuCr clad layer is composed of only BCC and FCC phases. The clad layers exhibit higher hardness at higher Al atomic content. The AlFeCoNiCuCr clad layer exhibits increased hardness at temperature between 400–700°C.


Author(s):  
Heena Khanchandani ◽  
Jaibeer Singh ◽  
Priyanka Sharma ◽  
Rupesh Kumar ◽  
Ornov Maulik ◽  
...  

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