Role of interfacial transition zones in the fracture of Cu/V nanolamellar multilayers

Authors

Siyuan Wei, Zhejiang University,
Shijian Zheng, Hebei University of Technology, Tianjin
Lifeng Zhang, Chinese Academy of Sciences, Hefei
Yue Liu, Shanghai Jiao Tong University
Jian Wang, University of Nebraska-LincolnFollow
Xianping Wang, Chinese Academy of Sciences, Hefei
Jiangwei Wang, Zhejiang UniversityFollow

ORCID IDs

http://orcid.org/0000-0001-5130-300X

http://orcid.org/0000-0003-1191-0782

Date of this Version

2020

Citation

MATER. RES. LETT. 2020, VOL. 8, NO. 8, 299–306 https://doi.org/10.1080/21663831.2020.1755379

Comments

2020 The Author(s)

Abstract

Plastic deformation and fracture behavior of Cu/V nanoscale metallic multilayers (NMMs) were systematically investigated through in situ transmission electron microscopy testing. Two different types of interfaces: sharp interfaces and interfacial transition zones (ITZs), formed in the as-fabricated Cu/V NMMs. Upon deformation, sharp interfaces and ITZs exert distinct influences on the fracture behavior of Cu/V NMMs. Sharp interfaces can impede the crack propagation by deflecting the crack propagation and blunting the crack tip, while the ITZs can induce microcracks and facilitate the fracture process. These findings shed light on the important roles of interface structures in the deformation of a broad class of NMMs.