@article{ec2ca3b4f33d47c8be9949d5e4b7a780,
title = "High-throughput investigations of configurational-transformation-dominated serrations in CuZr/Cu nanolaminates",
abstract = "Metallic amorphous/crystalline (A/C) nanolaminates exhibit excellent ductility while retaining their high strength. However, the underlying physical mechanisms and the resultant structural changes during plastic deformation still remain unclear. In the present work, the structure-property relationship of CuZr/Cu A/C nanolaminates is established through integrated high-throughput micro-compression tests and molecular dynamics simulations together with high-resolution transmission electron microcopy. The serrated flow of nanolaminates results from the formation of hexagonal-close-packed (HCP)-type stacking faults and twins inside the face-centered-cubic (FCC) Cu nano-grains, the body-centered-cubic (BCC)-type ordering at their grain boundaries, and the crystallization of the amorphous CuZr layers. The serration behavior of CuZr/Cu A/C nanolaminates is determined by several factors, including the formation of dense dislocation networks from the multiplication of initial dislocations that formed after yielding, weak-spots-related configurational-transitions and shear-transition-zone activities, and deformation-induced devitrification. The present work provides an insight into the heterogeneous deformation mechanism of A/C nanolaminates at the atomic scale, and mechanistic base for the microstructural design of self-toughening metallic-glass (MG)-based composites and A/C nanolaminates.",
author = "Wang, {William Yi} and Bin Gan and Deye Lin and Jun Wang and Yiguang Wang and Bin Tang and Hongchao Kou and Shunli Shang and Yi Wang and Xingyu Gao and Haifeng Song and Xidong Hui and Kecskes, {Laszlo J.} and Zhenhai Xia and Dahmen, {Karin A.} and Liaw, {Peter K.} and Jinshan Li and Liu, {Zi Kui}",
note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (Nos. 51690163 and 51601147), the Science Challenge Project (No. TZZT2019-D1.5), the Ministry of Science and Technology of China (No. 2017YFA0700700), the United States National Science Foundation (Nos. DMR-1006557, 1611180, and 1809640), and the Fundamental Research Funds for the Central Universities in China (No. G2016KY0302). W.Y. Wang and B. Gan would like to thank Dr. Wei Guo for fruitful discussions. First-principles calculations were carried out on the clusters at Northwestern Polytechnical University. Calculations were also carried out on the CyberStar cluster funded by NSF through grant No. OCI-0821527 and the XSEDE clusters supported by NSF through Grant No. ACI-1053575. Funding Information: This work was financially supported by the National Natural Science Foundation of China (Nos. 51690163 and 51601147 ), the Science Challenge Project (No. TZZT2019-D1.5 ), the Ministry of Science and Technology of China (No. 2017YFA0700700 ), the United States National Science Foundation (Nos. DMR-1006557 , 1611180 , and 1809640 ), and the Fundamental Research Funds for the Central Universities in China (No. G2016KY0302 ). W.Y. Wang and B. Gan would like to thank Dr. Wei Guo for fruitful discussions. First-principles calculations were carried out on the clusters at Northwestern Polytechnical University. Calculations were also carried out on the CyberStar cluster funded by NSF through grant No. OCI-0821527 and the XSEDE clusters supported by NSF through Grant No. ACI-1053575 . Publisher Copyright: {\textcopyright} 2020",
year = "2020",
month = sep,
day = "15",
doi = "10.1016/j.jmst.2020.04.024",
language = "English (US)",
volume = "53",
pages = "192--199",
journal = "Journal of Materials Science and Technology",
issn = "1005-0302",
publisher = "Chinese Society of Metals",
}