| Shear fracture in bulk metallic glass composites | |
| Rajpoot, Devashish1,2; Narayan, R. Lakshmi3; Zhang, Long4; Kumar, Punit2; Zhang, Haifeng4; Tandaiya, Parag1; Ramamurty, Upadrasta2,5 | |
| Corresponding Author | Narayan, R. Lakshmi(rlnarayan@mse.iitd.ac.in) ; Zhang, Long(zhanglong@imr.ac.cn) ; Tandaiya, Parag(parag.ut@iitb.ac.in) |
| 2021-07-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 213Pages:16 |
| Abstract | Fracture behavior of bulk metallic glass matrix composites (BMGCs) with both transforming and non-transforming fi-Ti dendrites under shear and opening modes was examined. Experimental results show that the fracture toughness of all three BMGCs is considerably lower in mode II than in mode I, due primarily to the shear dominant stress state in the former, which renders easy shear band initiation. However, stable crack growth in mode I is insignificant whereas it is considerable in mode II. The tough-ness of BMGCs reinforced with coarse but non-transforming dendrites in both the modes is higher than the respective values in BMGCs with transforming fi-Ti inspite of their ability to strain harden and hence enhanced ductility. Fracture surface features and shear band patterns at notch tips of both mode I and mode II specimens indicate that despite the interactions of dendrites with the shear bands, the fracture criterion and mechanism of BMGCs is identical to that in BMGs. The differences in the fracture behaviour of these BMGCs is rationalized by considering the effect of relaxation enthalpy of the amorphous ma-trices in addition to the length scale and transforming tendency of the dendrites on the transformation of a shear band into a crack. Implications of these results in terms improving the fracture toughness of BMGCs with transforming dendrites is discussed. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Bulk metallic glass composites Fracture Martensitic transformation Shear bands Plastic deformation |
| Funding Organization | Science and engineering research board, DST, GoI ; IITB-NTU joint PhD Degree Program ; A* STAR via the Structural Metals and Alloys Programme ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS |
| DOI | 10.1016/j.actamat.2021.116963 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Science and engineering research board, DST, GoI[SRG/2020/000095] ; IITB-NTU joint PhD Degree Program ; A* STAR via the Structural Metals and Alloys Programme[A18B1b0061] ; National Natural Science Foundation of China[51701213] ; National Natural Science Foundation of China[51790484] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Youth Innovation Promotion Association CAS |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000670077800003 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159693 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Narayan, R. Lakshmi; Zhang, Long; Tandaiya, Parag |
| Affiliation | 1.Indian Inst Technol, Dept Mech Engn, Mumbai 400076, Maharashtra, India 2.Nanyang Technol Univ, Dept Mech & Aerosp Engn, Singapore 637331, Singapore 3.Indian Inst Technol Delhi, Dept Mat Sci & Engn, New Delhi 110016, India 4.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 5.ASTAR, Inst Mat Res & Engn, Singapore 138634, Singapore |
| Recommended Citation GB/T 7714 | Rajpoot, Devashish,Narayan, R. Lakshmi,Zhang, Long,et al. Shear fracture in bulk metallic glass composites[J]. ACTA MATERIALIA,2021,213:16. |
| APA | Rajpoot, Devashish.,Narayan, R. Lakshmi.,Zhang, Long.,Kumar, Punit.,Zhang, Haifeng.,...&Ramamurty, Upadrasta.(2021).Shear fracture in bulk metallic glass composites.ACTA MATERIALIA,213,16. |
| MLA | Rajpoot, Devashish,et al."Shear fracture in bulk metallic glass composites".ACTA MATERIALIA 213(2021):16. |
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