Effect of heat treatment on fatigue behaviour of biomedical Ni-Ti alloy   wires under ultrasonic conditions

doi:10.1179/175355511X13240279339761

CORC > 北京大学 > 工学院

	Effect of heat treatment on fatigue behaviour of biomedical Ni-Ti alloy wires under ultrasonic conditions
	Zhou, H. M. ; Wang, H. X. ; Zhao, C. H. ; Li, J. R. ; Li, Q. F. ; Li, L. ; Zheng, Y. F.
刊名	建材工业技术
	2012
关键词	Nickel-titanium alloy Fatigue behaviour Ultrasonic condition Heat treatment SHAPE-MEMORY ALLOYS LIFE
DOI	10.1179/175355511X13240279339761
英文摘要	Superelastic Ti-50.8 at.% Ni alloy wires were tested under ultrasonic conditions using a self-designed ultrasonic fatigue tester. Different heat treatment processes were carried out to Ni-Ti wires, and the mechanical properties of the wires were investigated. Experimental results indicated that the longest fatigue life of Ni-Ti wire under ultrasonic conditions was obtained when it was annealed after cold drawing. Proper thermomechanical treatment increased the fatigue life of Ni-Ti wire due to the adjustment of microstructure in Ni-Ti alloys as well as the workhardening effect. The strengthening effect of heat treatment and cold drawing was attributed to the fine Ti3Ni4 precipitated phase and the high density of dislocations respectively. The SEM results showed smooth fractured faces with dimples existed in the propagation region of the fatigue cracks, indicating the excellent ductility and better resistance to propagation of fatigue cracks of NiTi wires.; Materials Science, Multidisciplinary; SCI(E); EI; 0; ARTICLE; 1; 8-10; 27
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/393711]
专题	工学院
推荐引用方式 GB/T 7714	Zhou, H. M.,Wang, H. X.,Zhao, C. H.,et al. Effect of heat treatment on fatigue behaviour of biomedical Ni-Ti alloy wires under ultrasonic conditions[J]. 建材工业技术,2012.
APA	Zhou, H. M..,Wang, H. X..,Zhao, C. H..,Li, J. R..,Li, Q. F..,...&Zheng, Y. F..(2012).Effect of heat treatment on fatigue behaviour of biomedical Ni-Ti alloy wires under ultrasonic conditions.建材工业技术.
MLA	Zhou, H. M.,et al."Effect of heat treatment on fatigue behaviour of biomedical Ni-Ti alloy wires under ultrasonic conditions".建材工业技术 (2012).