beta-type Ti-based bulk metallic glass composites with tailored structural metastability

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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
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2017-06-25
卷号	708 页码:972-981
关键词	Bulk metallic glass composite Metastability Work hardening Superelasticity Martensitic phase transformation
ISSN号	0925-8388
通讯作者	Zhang, HF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
中文摘要	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.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National 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)
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78078]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 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.,...&Pauly, Simon.(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.