Suresh, K. S. Kim, Dong-Ik Bhaumik, S. K. Suwas, Satyam 2024-01-20T11:04:30Z 2024-01-20T11:04:30Z 2021-09-04 2013-11 0966-9795 https://pubs.kist.re.kr/handle/201004/127507 This paper deals with the evolution of microstructure and texture during hot rolling of hafnium containing NiTi based shape memory alloy Ni49.4Ti38.6Hf12. The formation of the R-phase has been associated with the precipitation of (Ti,Hf)(2)Ni phase. The crystallographic texture of the parent phase B2 as well as the product phases R and B19' have been determined. It has been found that the variant selection during the B2 -> R phase transformation is quite strong compared to the case of the B2 -> B19' transformation. During deformation, the texture of the austenite phase evolves with strong Goss and Bs components. After transformation to martensitic structure, it gives rise to a [011]parallel to RD fiber. Microstructure and texture studies reveal the occurrence of partial dynamic recrystallization during hot rolling. Large strain heterogeneities that occur surrounding (Ti,Hf)(2)Ni precipitates are relieved through extended dynamic recovery instead of particle stimulated nucleation. (C) 2013 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD MARTENSITIC-TRANSFORMATION HF STRAIN PHASE BEHAVIOR SPUN Evolution of microstructure and texture in Ni49.4Ti38.6Hf12 shape memory alloy during hot rolling Article 10.1016/j.intermet.2013.04.009 1 INTERMETALLICS, v.42, pp.1 - 8 INTERMETALLICS 42 1 8 scie scopus 000323913500001 2-s2.0-84878398255 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article MARTENSITIC-TRANSFORMATION HF STRAIN PHASE BEHAVIOR SPUN Texture Twinning Rolling Microstructure Grain-boundary character distribution