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Grain refinement of a rapidly solidified Ti-30Ni-20Cu alloy by two-step annealing
- Authors
- Kim, Min-soo; Cho, Gyu-bong; Noh, Jung-pil; Jeon, Young-min; Kim, Yeon-wook; Miyazaki, Shuichi; Nam, Tae-hyun
- Issue Date
- Nov-2010
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Shape memory alloys; Grain refining; Crystallization; Melt spinning
- Citation
- SCRIPTA MATERIALIA, v.63, no.10, pp 1001 - 1004
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- SCRIPTA MATERIALIA
- Volume
- 63
- Number
- 10
- Start Page
- 1001
- End Page
- 1004
- ISSN
- 1359-6462
- Abstract
- Ti-30Ni-20Cu (at.%) alloy ribbons with an average grain size of 0.25-0.28 mu m were obtained by applying two-step annealing, comprising a first annealing step at 773-823 K and a second annealing step at 748 K, to amorphous melt-spun ribbons, which was very small compared with ribbons obtained by one-step annealing at 748-823 K (0.64-1.20 mu m). Hysteresis and elongation associated with the B2-B19 transformation were decreased by two-step annealing, while the fracture stress and strain increased. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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