High Plasticity and Substantial Deformation in Nanocrystalline NiFe Alloys Under Dynamic Loading.

Cheng, Sheng; Zhao, Yonghao; Guo, Yazhou; Li, Ying; Wei, Qiuming; Wang, Xun-Li; Ren, Yang; Liaw, Peter K et al. · Adv Mater · 2009

basic_science · Level V

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Abstract

A nanocrystalline (NC) NiFe alloy is presented, in which both highly improved plasticity and strength are achieved by the dynamic-loading-induced deformation mechanisms of de-twinning (that is, reduction of twin density) and significant grain coarsening. This work highlights potential ingenious avenues to exploit the superior behavior of NC materials under extreme conditions.