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所属单位：材料科学与技术学院

发表刊物：Vacuum

摘要：Surface Cr-Ni alloying of Ti6Al4V alloys was achieved by double-glow plasma surface metallurgy technology. The adhesion strength and nano-indentation hardness of Ti-CrNi alloy coatings with 20, 40, 60, and 80 at% Ni contents were investigated respectively. Effects of process on the metallographic structure, tensile strength and fatigue resistance of Ti6Al4V alloys were analyzed in detail. The results show that Ti-CrNi alloy coatings were dense, uniform, and compact, including a complete structure of deposited layer, interdiffusion layer, and sputtering-affected zone. With increasing of Ni, the adhesion of the deposited layer raised. However, the nano-hardness of the deposition layer gradually declines. The addition of Ni does not have significant impact on the nano-hardness of interdiffusion layer. Plasma alloying treatment resulted in the α-phase grain size of Ti6Al4V increased and a “net structure” appeared. After plasma alloying, the tensile strength of Ti6Al4V was about 2.1% higher than the solid solution annealing state. However, the fatigue life of Ti6Al4V after plasma alloying process declined. © 2018 Elsevier Ltd

ISSN号：0042-207X

是否译文：否

发表时间：2018-09-01

合写作者：张平则,姚正军,陈小虎,李逢昆

通讯作者：魏东博