ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
TiNi shape memory alloy thin sheets were produced from titanium and nickel metal sheetsby a new processing consisting of repetitive roll-bonding and diffusional heat treatment. TiNi sheetsafter heat treatment at a relatively low temperature for a long time exhibited fairly isotropic and highshape-recoverable strain, because a near {111} B2-phase texture such as {223}〈110〉 and{332}〈113〉 was developed through reactive diffusion during heat treatment. In the early stage ofreactive diffusion, intermetallic layers of Ti2Ni, TiNi and Ni3Ti were formed at once at the Ti/Niinterfaces of the roll-bonded laminate and then growth of a TiNi phase took place with the progress ofinterdiffusion. Texture of the final TiNi thin sheets, therefore, is derived from that of TiNi layersgenerated at the Ti/Ni interfaces, which is considered to have inherited rolling textures of Ni and Tilayers in the Ti/Ni laminate prior to reactive diffusion under orientation relationships on close-packedplane and direction between parent and product phases
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3442.pdf
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