Martensitic transformation and anomalies in resistivity of (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) shape memory alloys

doi:10.1016/j.jallcom.2007.10.053

	Martensitic transformation and anomalies in resistivity of (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) shape memory alloys
	Yin, Y.1; Kakeshita, T.2; Choi, M. S.2; Fukuda, T.2; Xia, T. D.1
刊名	Journal of Alloys and Compounds
	2008-09-22
卷号	464 期号:1-2 页码:422-428
关键词	Binary alloys Differential scanning calorimetry Electric conductivity Martensite Martensitic transformations Nickel alloys Nickel metallography Phase transitions Shape-memory alloy Temperature Titanium carbide Titanium metallography Lattice distortions Nickel titanium SMA Property measurement Temperature coefficient of electrical resistivity Thermoelastic martensitic transformations Ti-ni shape memory alloys Titanium carbides (TiC) Transformation temperatures
ISSN号	09258388
DOI	10.1016/j.jallcom.2007.10.053
英文摘要	Phase transformation of solid solution (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) alloys have been studied by using differential scanning calorimetry, physical property measurement system and optical microscope. The transformation temperature decreases due to the existence of titanium carbide (TiC) particles compared with that of near-equiatomic Ti-Ni shape memory alloy. The resistivity vs. temperature curves show hysteresis. Thermoelastic martensitic transformation occurred in two alloys despite the difference in TiC content. Nevertheless, the resistivity results show different martensitic transformation routes. A one-step B2 → B19 transformation occurred in the low TiC content alloy and an R transformation appeared in another alloy, suggesting that the martensitic transformation routes depended on the TiC content. The cumulative effect of the TiC particles causes the local stress field and lattice distortion to restrain the transformation of the B19. On the other hand, the TiC content has an effect on the temperature coefficient of electrical resistivity (TCR) of alloys. The Ti-Ni-0.5C alloy shows a negative TCR in the range 100-300 K during which transformation occurs. Another alloy shows the opposite result. The cause of the negative TCR is briefly discussed. © 2008.
资助项目	Gansu Educational Committee Science and Technology Foundation, China[0503B-04]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier BV
WOS记录号	WOS:000259715300081
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112012]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Yin, Y.
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan
推荐引用方式 GB/T 7714	Yin, Y.,Kakeshita, T.,Choi, M. S.,et al. Martensitic transformation and anomalies in resistivity of (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) shape memory alloys[J]. Journal of Alloys and Compounds,2008,464(1-2):422-428.
APA	Yin, Y.,Kakeshita, T.,Choi, M. S.,Fukuda, T.,&Xia, T. D..(2008).Martensitic transformation and anomalies in resistivity of (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) shape memory alloys.Journal of Alloys and Compounds,464(1-2),422-428.
MLA	Yin, Y.,et al."Martensitic transformation and anomalies in resistivity of (Ti-50Ni)1-xCx (x = 0.1, 0.5 at.%) shape memory alloys".Journal of Alloys and Compounds 464.1-2(2008):422-428.