Fracture toughness of a rejuvenated beta-Ti reinforced bulk metallic glass matrix composite

doi:10.1016/j.jmst.2021.09.001

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	Fracture toughness of a rejuvenated beta-Ti reinforced bulk metallic glass matrix composite
	Rajpoot, Devashish 2,3; Narayan, R. Lakshmi 4; Zhang, Long 1; Kumar, Punit 3; Zhang, Haifeng 1; Tandaiya, Parag 2; Ramamurty, Upadrasta 3,5
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-04-20
卷号	106 页码:225-235
关键词	Bulk metallic glass composites Fracture Rejuvenation Shear bands Microsegragation
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.09.001
通讯作者	Narayan, R. Lakshmi(rlnarayan@mse.iitd.ac.in) ; Zhang, Long(zhanglong@imr.ac.cn)
英文摘要	A beta-Ti dendrite reinforced Zr-based bulk metallic glass composite (BMGC) was found to be brittle when cast in a large size. The reasons for the embrittlement and the effectiveness of the cryothermal cycling (CTC) treatment in restoring the mode I fracture toughness are examined. Plasticity in all the CTC treated BMGC is estimated from the distribution and occurrence of pop-ins in nanoindentation tests and by measuring the magnitude of enthalpy of relaxation (Delta H-rel) via differential scanning calorimetry (DSC). This is further validated by examining the strain-to-failure (epsilon(f)) in compression tests. Mode I fracture behaviour of the as-cast embrittled BMGC and the CTC treated BMGC, which exhibits maximum plasticity, is examined. Results show that both BMGCs are equally brittle and exhibit 5 times lower notch toughness (K-QJ) than their tougher counterpart. Post-facto imaging of the side surfaces reveals the absence of notch-tip plasticity in both BMGCs. The lack of notch tip plasticity of CTC treated BMGC, despite exhibiting signatures of plasticity in nanoindentation and higher Delta H(rel )is rationalized by reassessing the origin of pop-ins in nanoindentation tests and describing the variations in chemical and topological short range ordering during CTC, respectively. Implications of these results in terms of improving the fracture toughness of structurally relaxed BMGCs via CTC are discussed. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	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[52171164] ; National Natural Science Foundation of China[51790484] ; National Key Research and Development Program[2018YFB0703402] ; Youth Innovation Promotion Association CAS[2021188]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000780421100002
资助机构	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 ; National Key Research and Development Program ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172743]
专题	金属研究所_中国科学院金属研究所
通讯作者	Narayan, R. Lakshmi; Zhang, Long
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Indian Inst Technol, Dept Mech Engn, Mumbai 400076, Maharashtra, India 3.Nanyang Technol Univ, Dept Mech & Aerosp Engn, Singapore 637331, Singapore 4.Indian Inst Technol Delhi, Dept Mat Sci & Engn, New Delhi 110016, India 5.ASTAR, Inst Mat Res & Engn, Singapore 138634, Singapore
推荐引用方式 GB/T 7714	Rajpoot, Devashish,Narayan, R. Lakshmi,Zhang, Long,et al. Fracture toughness of a rejuvenated beta-Ti reinforced bulk metallic glass matrix composite[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,106:225-235.
APA	Rajpoot, Devashish.,Narayan, R. Lakshmi.,Zhang, Long.,Kumar, Punit.,Zhang, Haifeng.,...&Ramamurty, Upadrasta.(2022).Fracture toughness of a rejuvenated beta-Ti reinforced bulk metallic glass matrix composite.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,106,225-235.
MLA	Rajpoot, Devashish,et al."Fracture toughness of a rejuvenated beta-Ti reinforced bulk metallic glass matrix composite".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 106(2022):225-235.