Thermomechanical fatigue of shape memory alloys

IMR OpenIR

	Thermomechanical fatigue of shape memory alloys
	D. C. Lagoudas; D. A. Miller; L. Rong; P. K. Kumar
	2009
发表期刊	Smart Materials & Structures
ISSN	0964-1726
卷号	18 期号:8
摘要	As shape memory alloys (SMAs) gain popularity as high energy density actuators, one characteristic that becomes particularly important is the thermomechanical transformation fatigue life, in addition to maximum transformation strain and stability of actuation cycles. In this paper, a novel test frame design and testing protocol are discussed, for investigating the thermally activated transformation fatigue characteristics of SMAs under various applied loads for both complete and partial phase transformation. A Ni(50)Ti(40)Cu(10) (at.%) SMA was chosen for this investigation and the effects of various heat treatments on the transformation temperatures and the transformation fatigue lives of actuators were studied. For selected heat treatments, the evolution of recoverable and irrecoverable strains up to failure under different applied stress levels was studied in detail. The influence of complete and partial transformation on the fatigue life is also presented. The irrecoverable strain accumulation as a function of the number of cycles to failure for different stress levels is presented by a relationship similar to the Manson-Coffin law for both partial and complete transformations.
部门归属	[lagoudas, d. c.; kumar, p. k.] texas a&m univ, dept aerosp engn, college stn, tx 77843 usa. [miller, d. a.] montana state univ, dept mech & ind engn, bozeman, mt 59717 usa. [rong, l.] chinese acad sci, inst met res, shenyang 110015, peoples r china.;lagoudas, dc (reprint author), texas a&m univ, dept aerosp engn, college stn, tx 77843 usa;lagoudas@aero.tamu.edu
关键词	Cyclic Deformation Part Ii Niti Transformation Behavior Tini Failure Wires Life
URL	查看原文
WOS记录号	WOS:000268251300021
引用统计	被引频次：105[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32007
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. C. Lagoudas,D. A. Miller,L. Rong,et al. Thermomechanical fatigue of shape memory alloys[J]. Smart Materials & Structures,2009,18(8).
APA	D. C. Lagoudas,D. A. Miller,L. Rong,&P. K. Kumar.(2009).Thermomechanical fatigue of shape memory alloys.Smart Materials & Structures,18(8).
MLA	D. C. Lagoudas,et al."Thermomechanical fatigue of shape memory alloys".Smart Materials & Structures 18.8(2009).