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  4. № 16 2009
  5. P. 154

Ultrafine grain structure and phase composition of the NiTi after warm abc-pressing

A.I.Lotkov,
 
Yu.N.Koval,
 
V.M.Grishkov,
 
E.F.Dudarev,
 
G.S.Firstov,
 
N.V.Girsova,
 
D.Yu.Zhapova
 

Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2009, #16
http://www.materials.kiev.ua/article/351

Abstract

Trends of the formation of the NiTi ultrafine grain structure after step-wise warm (673-573 К) abc-pressing were studied. It was shown that pressing results in the appearance of the mixed type of microstructure based on sub-microcrystalline and nano-grain components, while the latter is localized mainly in deformation micro-bands. The changes in the NiTi phase composition at 295 К after warm abc-pressing were determined.


INTERMETALLID, MARTENSITE TRANSFORMATION, SEVERE PLASTIC DEFORMATION, ULTRAFINE GRAIN STRUCTURE

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