Effect of small gamma-precipitates on the two-way shape memory effect in Cu-Zn-Al alloys

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	Effect of small gamma-precipitates on the two-way shape memory effect in Cu-Zn-Al alloys
	X. M. Zhang ; M. Liu ; J. Fernandez ; J. M. Guilemany
刊名	Materials & Design
	2000
卷号	21 期号:6 页码:557-559
关键词	TWSME (two way shape memory effect) precipitation strain fields Cu-Zn-Al alloys stress-induced martensite oriented growth transformation behavior
ISSN号	0261-3069
中文摘要	The gamma-precipitates in Cu-Zn-Al alloys, trained by the stabilization of the stress induced martensite (SSIM) method, have been studied. After the SSIM treatment, it was found that small gamma-precipitates in the beta-austenite are ellipsoidal, with a large strain field oriented in the same direction; while in the martensite the gamma-precipitates changed their shape from ellipsoid to spheroid, and relaxed their strain fields. In order to check whether the strain field of the gamma-precipitates is capable of producing a thermoelastic martensitic transformation, an in-situ observation, by heating a sample holder in TEM, was performed. It was found that during heating over a temperature A(s), the gamma-precipitates with a spherical shape in the martensite recovered their strain field and elliptical shape. During cooling, the strain field of the gamma-precipitates disappeared again. It was proposed that the strain field of the gamma-precipitates, trained by the SSIM method, plays an important part in the thermoelastic martensitic transformation, and presents two-way shape memory effects. (C) 2000 Elsevier Science Ltd. All rights reserved.
原文出处	://WOS:000088844400014
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37256]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	X. M. Zhang,M. Liu,J. Fernandez,et al. Effect of small gamma-precipitates on the two-way shape memory effect in Cu-Zn-Al alloys[J]. Materials & Design,2000,21(6):557-559.
APA	X. M. Zhang,M. Liu,J. Fernandez,&J. M. Guilemany.(2000).Effect of small gamma-precipitates on the two-way shape memory effect in Cu-Zn-Al alloys.Materials & Design,21(6),557-559.
MLA	X. M. Zhang,et al."Effect of small gamma-precipitates on the two-way shape memory effect in Cu-Zn-Al alloys".Materials & Design 21.6(2000):557-559.