Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 2 No. 4 November 1992|
（Institute of Solid State Physics, Academia Sinica, Hefei 230031, China）
Abstract:The transformation behaviour of the near-equiatomic TiNi alloys with one-way or two-way shape memory effect has been examined using DSC and TEM. The transformation sequence with cooling is B2→M for the one-way memory specimens and the B2→R→R+M for the two-way memory specimens. The transformation from B2 to R is a first-order transformation and the R phase is not premartensitic, which is associated with a two-way memory effect.
Key words: transformation one-way memory two-way memory TiNi alloy