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has been cited by the following article:

• TITLE: Hot Rolling and Ageing Effect on the Pseudoelasticity Behaviour of Ti-Rich TiNi Shape Memory Alloy

  AUTHORS: Narendranath. S., Vijay Desai, S. Basavarajappa, K.V. Arun, S. Manjunath Yadav

  KEYWORDS: Pseudoelasticity; S M A; Critical stress; Elongation

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.9 No.4, April 20, 2010

  ABSTRACT: This paper presents the findings of an experimental study of how ageing temperature affects the pseudoelasticity (PE) and its phases of Shape Memory Alloy (SMA). These have been examined by means of tensile testing machine and X-ray diffraction (XRD). By increasing the ageing temperature (constant ageing time) from 350oC to 550oC critical stress for martensite formation and psuedo-elastic elongation increased. However, specimen aged at 650oC showed a decrease in the critical stress for martensite formation and psuedo-elastic elongation. After second and third sequence of loading and unloading, the critical stress shifted towards higher side was observed. The XRD measurement revealed that phases present in the matrix drastically changes with ageing temperatures. Transformation was taking place in two-way transformation, i.e., during heating martensite (B19') transformed to austenite (B2) while cooling the austenite (B2) transformed back to martensite (B19') .