Texture Evolution of HPT-Processed Ni50Mn29Ga21
The texture of polycrystalline Ni50Mn29Ga21 alloys fabricated by high pressure torsion (HPT) was investigated with high-energy synchrotron radiation. HPT was performed at temperatures between 873K and 1173K under a hydrostatic pressure of 400 MPa. During HPT above 973K the initial cyclic fibre texture changes to a strong cube and a weak F component. Below 973K a strong rotated cube and weak F and C components develop. Additionally, electron backscatter diffraction reveals that samples deformed at low temperature do not completely transform to martensite giving rise to residual austenite.
Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar
R. Chulist et al., "Texture Evolution of HPT-Processed Ni50Mn29Ga21", Materials Science Forum, Vols. 702-703, pp. 169-172, 2012