Amorphous martensite in beta-Ti alloys

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	Amorphous martensite in beta-Ti alloys
	Zhang, L; Zhang, HF; Ren, XB; Eckert, J; Wang, YD; Zhu, ZW; Gemming, T; Pauly, S; Zhang, HF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Ren, XB (reprint author), Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Multidisciplinary Mat Res Ctr, Xian 710049, Shaanxi, Peoples R China.
刊名	NATURE COMMUNICATIONS
	2018-02-06
卷号	9 页码:-
关键词	Pressure-induced Amorphization Solid-state Amorphization Metallic Glasses Transformation Crystal Titanium Silicon Liquid Phase Thermodynamics
ISSN号	2041-1723
英文摘要	Martensitic transformations originate from a rigidity instability, which causes a crystal to change its lattice in a displacive manner. Here, we report that the martensitic transformation on cooling in Ti-Zr-Cu-Fe alloys yields an amorphous phase instead. Metastable beta-Ti partially transforms into an intragranular amorphous phase due to local lattice shear and distortion. The lenticular amorphous plates, which very much resemble alpha'/alpha ''. martensite in conventional Ti alloys, have a well-defined orientation relationship with the surrounding beta-Ti crystal. The present solid-state amorphization process is reversible, largely cooling rate independent and constitutes a rare case of congruent inverse melting. The observed combination of elastic softening and local lattice shear, thus, is the unifying mechanism underlying both martensitic transformations and catastrophic (inverse) melting. Not only do we reveal an alternative mechanism for solid-state amorphization but also establish an explicit experimental link between martensitic transformations and catastrophic melting.; Martensitic transformations originate from a rigidity instability, which causes a crystal to change its lattice in a displacive manner. Here, we report that the martensitic transformation on cooling in Ti-Zr-Cu-Fe alloys yields an amorphous phase instead. Metastable beta-Ti partially transforms into an intragranular amorphous phase due to local lattice shear and distortion. The lenticular amorphous plates, which very much resemble alpha'/alpha ''. martensite in conventional Ti alloys, have a well-defined orientation relationship with the surrounding beta-Ti crystal. The present solid-state amorphization process is reversible, largely cooling rate independent and constitutes a rare case of congruent inverse melting. The observed combination of elastic softening and local lattice shear, thus, is the unifying mechanism underlying both martensitic transformations and catastrophic (inverse) melting. Not only do we reveal an alternative mechanism for solid-state amorphization but also establish an explicit experimental link between martensitic transformations and catastrophic melting.
学科主题	Multidisciplinary Sciences
语种	英语
资助机构	National Natural Science Foundation of China [51434008, 51790484, 51701213, 51431007, 51231002]; 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)
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79521]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, HF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Ren, XB (reprint author), Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Multidisciplinary Mat Res Ctr, Xian 710049, Shaanxi, Peoples R China.; Ren, XB (reprint author), Natl Inst Mat Sci, Ferro Phys Grp, Tsukuba, Ibaraki 3050047, Japan.
推荐引用方式 GB/T 7714	Zhang, L,Zhang, HF,Ren, XB,et al. Amorphous martensite in beta-Ti alloys[J]. NATURE COMMUNICATIONS,2018,9:-.
APA	Zhang, L.,Zhang, HF.,Ren, XB.,Eckert, J.,Wang, YD.,...&Ren, XB .(2018).Amorphous martensite in beta-Ti alloys.NATURE COMMUNICATIONS,9,-.
MLA	Zhang, L,et al."Amorphous martensite in beta-Ti alloys".NATURE COMMUNICATIONS 9(2018):-.