4.6 Article

Elinvar effect in severely-deformed Ti-50.8(at%)Ni thin belt

期刊

MATERIALS LETTERS
卷 252, 期 -, 页码 96-99

出版社

ELSEVIER
DOI: 10.1016/j.matlet.2019.05.109

关键词

Shape memory materials; Elinvar effect; Severe cold work; Nanocrystalline; Materials

资金

  1. National Key R&D Program of China [2017YFB0703003]
  2. National Natural Science Foundation of China Youth Found [51201100]

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We discovered Elinvar effect in a severely cold worked Ti-50.8(at%)Ni thin belt that showed a modulus variation of less than 0.54GPa(similar to 1%) over a wide temperature range (-50 to 100 degrees C). Microstructural analysis showed an unraveled amorphous matrix dotted with nanosized crystallites, which demonstrated that the softening of the nanodomains in the retained nanosized crystallites and hardening of the amorphous matrix during cooling over wide temperature range can trigger the Elinvar effect. (C) 2019 Published by Elsevier B.V.

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