Extraordinary Toughening by Cryorolling in Zr (pages 167–170)
Yindong Shi, Ming Li, Defeng Guo, Tengyun Ma, Zhibo Zhang, Xiaohong Li, Guosheng Zhang and Xiangyi Zhang
Article first published online: 4 OCT 2013 | DOI: 10.1002/adem.201300153
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.