Origin of three-stage transformation in a severely cold-rolled and annealed Ti51Ni40Cu9 shape memory alloy

Autor:	Shyi-Kaan Wu, K.N. Lin
Rok vydání:	2008
Předmět:	Three stage Materials science Annealing (metallurgy) Mechanical Engineering Metallurgy Metals and Alloys Titanium alloy Shape-memory alloy Central region Grain size Mechanics of Materials Diffusionless transformation Particle-size distribution Materials Chemistry Composite material
Zdroj:	Journal of Alloys and Compounds. 461:117-120
ISSN:	0925-8388
Popis:	Severely cold-rolled Ti51Ni40Cu9 shape memory alloy annealed at 500 °C × 72 h and 650 °C × 1 h exhibits three-stage martensitic transformation owing to the grain-size effect, i.e., the specimen has small grains near the rolling surfaces and large grains in the central region. The different grain-size distribution is attributed to the inhomogeneous cold-rolling effect. The three-stage transformation has three pairs of transformation peaks which are associated with B21 ↔ B191 transformation of large grains, B22 ↔ B192 transformation of small grains and (B191 + B192) ↔ B19′ transformation of both large and small grains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ddf4383fd4c5869d821bb87ada5c0742 https://doi.org/10.1016/j.jallcom.2007.07.010 Zobrazit plný text záznamu Full Text from ScienceDirect