| Shear-band blunting governs superior mechanical properties of shape memory metallic glass composites | |
| Zhang, Long1,7; Yan, Tingyi1,2; Sopu, Daniel3,4; Wu, Yi1,2; Jiang, Binbin5; Du, Kui5; Zhang, Haifen1,7; Eckert, Juergen6 | |
| Corresponding Author | Zhang, Long(zhanglong@imr.ac) ; Sopu, Daniel(daniel.sopu@oawe.ac) ; Zhang, Haifen(hfzhang@imr.ac.cn) |
| 2022-12-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 241Pages:12 |
| Abstract | Metallic glass composites (MGCs) containing crystals can display tensile ductility, overcoming the catas-trophic failure of bulk metallic glasses. However, MGCs containing crystals with dislocation-mediated plasticity generally undergo strain-softening, but MGCs containing shape memory crystals can exhibit strain-hardening. The origin of large ductility and strain-hardening of shape memory MGCs as well as the interactions of shear bands (SBs) with crystals remains elusive. Here, two kinds of MGCs containing crystals with dislocation-mediated plasticity or shape memory crystals with martensitic transformations are investigated. It is found that the behavior and properties of SBs in glass matrix can be significantly altered by deformation characteristics of crystals. If crystals deform via dislocations, SBs are narrow, sharp and become mature. In comparison, SBs in shape memory MGCs continuously broaden without matur-ing by following the growth of thick martensitic plates. Broad SBs tend to bifurcate during propagation, and bifurcated SBs further induce the formation of more martensitic variants in crystals, benefiting strain delocalization. Broadening and bifurcation of SBs cause the SB blunting, which governs the superior me-chanical properties of shape memory MGCs. These findings not only deepen the understanding of SBs in glass materials, but also provide a fundamental basis to enhance their mechanical properties by engineer-ing of blunt SBs.(c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Shear-band blunting Metallic glass composites Strain-hardening Tensile ductility Martensitic transformations |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Liaoning Revitalization Talents Program ; German Science Foundation (DFG) ; European Research Council (ERC) under the ERC Advanced Grant IN-TELHYB ; Natural Science Foundation of Liaoning Province ; Youth Innovation Promotion Association CAS |
| DOI | 10.1016/j.actamat.2022.118422 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2021YFA0716303] ; National Natural Science Foundation of China[52171164] ; National Natural Science Foundation of China[51790484] ; Liaoning Revitalization Talents Program[XLYC1802078] ; German Science Foundation (DFG)[SO 1518/1-1] ; European Research Council (ERC) under the ERC Advanced Grant IN-TELHYB[ERC-2013-ADG-340025] ; Natural Science Foundation of Liaoning Province[2021-MS-009] ; Youth Innovation Promotion Association CAS[2021188] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000879579200002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176603 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Long; Sopu, Daniel; Zhang, Haifen |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria 4.Tech Univ Darmstadt, Inst Materialwissenschaft, Fachgebiet Materialmodellierung, D-64287 Darmstadt, Germany 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 6.Montanunivers Leoben, Chair Mat Phys, Dept Mat Sci, A-8700 Leoben, Austria 7.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Long,Yan, Tingyi,Sopu, Daniel,et al. Shear-band blunting governs superior mechanical properties of shape memory metallic glass composites[J]. ACTA MATERIALIA,2022,241:12. |
| APA | Zhang, Long.,Yan, Tingyi.,Sopu, Daniel.,Wu, Yi.,Jiang, Binbin.,...&Eckert, Juergen.(2022).Shear-band blunting governs superior mechanical properties of shape memory metallic glass composites.ACTA MATERIALIA,241,12. |
| MLA | Zhang, Long,et al."Shear-band blunting governs superior mechanical properties of shape memory metallic glass composites".ACTA MATERIALIA 241(2022):12. |
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