The nature of self-accommodation in Ni-Ti shape memory alloys
- Bhabha Atomic Research Centre, Bombay (India). Metallurgy Division
The martensitic microstructure of shape memory alloy (SMA) is essentially an aggregate of martensite plate groups. It has been shown that the microstructure of Ni-Ti SMA consists of martensite plates clustered in a triangular morphology about the (100)[beta] pole and that of SMA's which transform to 9R, 3R and 2H martensites consist of diamond shaped 4-plate groups clustered about the (110)[beta] pole. The aim of the present study is two-fold: (1) to estimate the deviatoric and the hydrostatic components of the total transformation strain in different possible self-accommodating clusters, and, (2) to experimentally determine the nature of self-accommodation in Ni-Ti SMA from the effect of the unaccommodated strain field on the transformation temperatures.
- OSTI ID:
- 6100178
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:6; ISSN SCRMEX; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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