Transformation behavior of a Ti-47Ni-3Cu alloy heat treated under temperature gradient
- Authors
- Kim, H.-G.; Kim, H.-S.; Choi, E.; Cho, B.-S.; Chung, Y.-S.; Nam, T.-H.
- Issue Date
- Nov-2007
- Citation
- Physica Scripta T, v.T129, pp 236 - 239
- Pages
- 4
- Journal Title
- Physica Scripta T
- Volume
- T129
- Start Page
- 236
- End Page
- 239
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/65370
- DOI
- 10.1088/0031-8949/2007/T129/053
- ISSN
- 0281-1847
- Abstract
- Transformation behavior and shape memory characteristics of temperature gradient anneal (TGA) treated and thermo-mechanically treated (TMT) Ti-47Ni-3Cu(at.%) alloys were investigated by means of differential scanning calorimetry and thermal cycling tests under constant load. Both TGA treated and TMT Ti-47Ni-3Cu alloys showed B2-B19′ transformation behavior. The change in Ms * by 23 K was developed in the TGA treated Ti-47Ni-3Cu alloy along the length of the sample (150 mm). TGA treated Ti-47Ni-3Cu alloy showed perfect shape memory effects. The temperature dependence of elongation (dε/dT) of a TGA treated specimen was in the range of 0.02-0.09% K -1 depending on the amount of applied stress, which was small compared to that of a TMT specimen (0.01-0.18% K-1). The temperature dependence of elongation (dε/dT) of the TGA treated specimen on cooling is almost the same as that on heating, while dε/dT of the TMT specimen on cooling is much smaller than that on heating (0.68% K-1). © 2007 The Royal Swedish Academy of Sciences.
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Collections - College of Engineering > School of Civil and Environmental Engineering, Urban Design and Studies > 1. Journal Articles
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