High-entropy alloy coatings with versatile properties prepared by laser cladding
High-entropy (HE) alloy coatings with the compositions of FeCoNiCrCu, Fe6NiCoCrAlTiSi, FeCoNiCrAl3Si, FeCoNiCrAl2Si and FeCoNiCrAlSiCuTiMoB0.5 have been prepared by laser cladding. The results show that the laser cladding technique plays a key role on preventing precipitation of intermetallic compounds in the HE alloy coatings due to the kinetic reasons. The coatings are mainly composed of simple FCC or BCC solid solution phase with many excellent properties, such as high microhardness, good fracture toughness, high temperature softening resistance, and corrosion resistance. The transformation of microstrcutrure, grain boundary distribution and microhardness of the coatings after annealing treatments was discussed by EBSD observation. The phase selection of the HE alloy coatings was also mapped with different laser solidification rate.
laser cladding high-entropy alloy properties phase selection
Hui Zhang Yi-Zhu He1 Pan Ye Yinsheng H Keesam Shin
School of Materials Science and Engineering, Anhui University of Technology, Maanshan, China School of Materials Science and Engineering, Southeast University, Nanjing, China School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Republic
国际会议
北京
英文
572-576
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）