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beta-type Ti-based bulk metallic glass composites with tailored structural metastability
Zhang, Long; Zhang, Haifeng; Li, Wenqing; Gemming, Thomas; Wang, Pei; Boenisch, Matthias; Sopu, Daniel; Eckert, Juergen; Pauly, Simon; Zhang, HF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2017-06-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume708Pages:972-981
AbstractBulk metallic glass composites (BMGCs) containing an in-situ formed metastable beta phase (beta-type BMGCs) being capable of transforming to martensites, are a promising class of alloys. Nonetheless, the influence of the structural metastability of b phases on the deformation mechanisms of BMGCs remains largely unclear. This, however, is crucial for understanding and optimizing plastic deformability. In this study, three Ti-based beta-type BMGCs with nominal compositions of (Ti0.505Zr0.353Fe0.028Be0.114)(100-x)Cu-x (x = 1, 5, 8) have been developed, in each of which the beta-Ti phase has a different metastability. For x = 8, the b phase precipitates exclusively and does not transform martensitically during deformation. At the lowest Cu content (x = 1), however, the b phase contains a high density of fine u phase upon quenching, which hinders the deformation-induced martensitic transformation. b phases in both BMGCs deform plastically by dislocation glide. Only when x = 5 does the b phase undergo the martensitic transformation to alpha ''-Ti due to an appropriate degree of metastability. The reversible phase transformation between b and alpha '' followed by twinning in alpha '' on continuing deformation leads to a "double yielding" behavior and results in strong work-hardening capability as well as superelasticity during compression (cyclic loading) tests. (C) 2017 Elsevier B.V. All rights reserved.; Bulk metallic glass composites (BMGCs) containing an in-situ formed metastable beta phase (beta-type BMGCs) being capable of transforming to martensites, are a promising class of alloys. Nonetheless, the influence of the structural metastability of b phases on the deformation mechanisms of BMGCs remains largely unclear. This, however, is crucial for understanding and optimizing plastic deformability. In this study, three Ti-based beta-type BMGCs with nominal compositions of (Ti0.505Zr0.353Fe0.028Be0.114)(100-x)Cu-x (x = 1, 5, 8) have been developed, in each of which the beta-Ti phase has a different metastability. For x = 8, the b phase precipitates exclusively and does not transform martensitically during deformation. At the lowest Cu content (x = 1), however, the b phase contains a high density of fine u phase upon quenching, which hinders the deformation-induced martensitic transformation. b phases in both BMGCs deform plastically by dislocation glide. Only when x = 5 does the b phase undergo the martensitic transformation to alpha ''-Ti due to an appropriate degree of metastability. The reversible phase transformation between b and alpha '' followed by twinning in alpha '' on continuing deformation leads to a "double yielding" behavior and results in strong work-hardening capability as well as superelasticity during compression (cyclic loading) tests. (C) 2017 Elsevier B.V. All rights reserved.
description.department[zhang, long ; zhang, haifeng ; li, wenqing] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [zhang, long ; gemming, thomas ; wang, pei ; boenisch, matthias ; sopu, daniel ; pauly, simon] ifw dresden, inst complex mat, pob 27 01 16, d-01069 dresden, germany ; [eckert, juergen] austrian acad sci, erich schmid inst mat sci, jahnstr 12, a-8700 leoben, austria ; [eckert, juergen] univ leoben, dept mat phys, jahnstr 12, a-8700 leoben, austria
KeywordBulk Metallic Glass Composite Metastability Work Hardening Superelasticity Martensitic Phase Transformation
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51434008 (U1435204), 51531005]; China's Manned Space Station Project [TGJZ800-2-RW024]; Innovative Talents Planning Project of Jiangsu Province, China; German Science Foundation (DFG) [PA 2275/2-1]; Leibniz Program [EC 111/26-1]; European Research Council under the ERC Advanced Grant INTELHYB [ERC-2013-ADG-340025]; China Scholarship Council (CSC)
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78078
Collection中国科学院金属研究所
Corresponding AuthorZhang, HF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, Long,Zhang, Haifeng,Li, Wenqing,et al. beta-type Ti-based bulk metallic glass composites with tailored structural metastability[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,708:972-981.
APA Zhang, Long.,Zhang, Haifeng.,Li, Wenqing.,Gemming, Thomas.,Wang, Pei.,...&Zhang, HF .(2017).beta-type Ti-based bulk metallic glass composites with tailored structural metastability.JOURNAL OF ALLOYS AND COMPOUNDS,708,972-981.
MLA Zhang, Long,et al."beta-type Ti-based bulk metallic glass composites with tailored structural metastability".JOURNAL OF ALLOYS AND COMPOUNDS 708(2017):972-981.
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