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Extraordinary Toughening by Cryorolling in Zr
Author(s) -
Shi Yindong,
Li Ming,
Guo Defeng,
Ma Tengyun,
Zhang Zhibo,
Li Xiaohong,
Zhang Guosheng,
Zhang Xiangyi
Publication year - 2014
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201300153
Subject(s) - materials science , toughening , ductility (earth science) , ultimate tensile strength , strain hardening exponent , hardening (computing) , composite material , metallurgy , toughness , creep , layer (electronics)
Deformed materials usually show a hardening behavior, i.e. enhanced strength accompanied with reduced ductility. Here, we report an extraordinary toughening behavior in cryorolled Zr, i.e. a simultaneous enhancement of the strength and ductility with strain. This unusual increase of ductility results from the motion of preexisting high‐density dislocations in tensile processes. The high‐density dislocations also contribute to the enhanced strength.