BSTRACTTwinning in coarse-grained Zr is ubiquitous but not in nanostructured Zr due to the strong nano-confinement. Here we show that hexagonal close-packed (hcp) twins can proliferate in a nanolayered Zr-Nb as a result of the introduction of ductile body centered cubic (bcc) nanolayers. Both common {11¯02} twins and less common {1¯1¯21} twins are found to propagate across the nanolayers by a novel twin hopping mechanism from one hcp layer to another. The fine ductile bcc nanolayers act as buffers that lower the back stress at the hcp/bcc interface far below that which usually constrains twinning.
Breaking mixture rule of strength and ductility by interface induced nano-scale heterostructure in TA1/304 composites
Significantly extending the gradient layer and mechanical properties of Mg alloys by texture optimization
A bcc refractory high-entropy alloy: the ideal case of smooth plastic flow
Strength and plasticity of Cr/CrXN multilayers with gradient nanoarchitectures
Superior plastic flow stability of self-patterned carbide – amorphous ceramic nanostructures
相关作者
Yuhui Li
Kai Yao
Zhixin Wang
Baoli He
Boyang Li
Chunguang Shen
Lingling Zhang
Shijian Zheng
相关机构
State Key Laboratory of High-Performance Roll Materials and Composite Forming School of Materials Science and Engineering Hebei University of Technology
a Jiangxi Key Laboratory of Advanced Copper-based Materials Institute of Applied Physics Jiangxi Academy of Sciences
b School of Materials Science and Engineering Chongqing University
c Key Laboratory for Light-weight Materials Nanjing Tech University