Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting

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	Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting
其他题名	Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting
	Hernandez J 1; Li S J 2; Martinez E 1; Murr L E 1; Pan X M 3; Amato K N 1; Cheng X Y 2; Yang F 2; Terrazas C A 4; Gaytan S M 4; Hao Y L 2; Yang R 2; Medina F 4; Wicker R B 4
	2013
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	29 期号:11 页码:1011-1017
摘要	Atomized, pre-alloyed Ti–24Nb–4Zr–7.9Sn (wt%) powder was used to fabricate solid, prototype components by electron beam melting (EBM). Vickers microindentation hardness values were observed to average 2 GPa for the precursor powder and 2.5 GPa for the solid, EBM-fabricated products. The powder and solid product microstructures were examined by optical and electron microscopy. X-ray diffraction analyses showed that they had bcc β-phase microstructure. However, it was found by transmission electron microscopy that the EBM-fabricated product had plate morphology with space ～100–200 nm. Although the corresponding selected area diffraction patterns can be indexed by β-phase plus α″-martensite with orthorhombic crystal structure, the dark-field analyses failed to observe the α″-martensite. Such phenomenon was also found in deformed gum metals and explained by stress-induced diffusion scattering due to phonon softening.
其他摘要	Atomized, pre-alloyed Ti–24Nb–4Zr–7.9Sn (wt%) powder was used to fabricate solid, prototype components by electron beam melting (EBM). Vickers microindentation hardness values were observed to average 2 GPa for the precursor powder and 2.5 GPa for the solid, EBM-fabricated products. The powder and solid product microstructures were examined by optical and electron microscopy. X-ray diffraction analyses showed that they had bcc β-phase microstructure. However, it was found by transmission electron microscopy that the EBM-fabricated product had plate morphology with space ～100–200 nm. Although the corresponding selected area diffraction patterns can be indexed by β-phase plus α″-martensite with orthorhombic crystal structure, the dark-field analyses failed to observe the α″-martensite. Such phenomenon was also found in deformed gum metals and explained by stress-induced diffusion scattering due to phonon softening.
关键词	Biomedical titanium alloy α″-Martensite Electron beam melting Hardness Optical and electron microscopy
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:4989362
引用统计	被引频次：12[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/147549
专题	中国科学院金属研究所
作者单位	1.Department of Metallurgical and Materials Engineering, The University of Texas at El Paso, 2.中国科学院金属研究所 3.大连理工大学 4.W. M. Keck Center for 3D Innovation, The University of Texas at El Paso
推荐引用方式 GB/T 7714	Hernandez J,Li S J,Martinez E,et al. Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting[J]. Journal of Materials Science & Technology,2013,29(11):1011-1017.
APA	Hernandez J.,Li S J.,Martinez E.,Murr L E.,Pan X M.,...&Wicker R B.(2013).Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting.Journal of Materials Science & Technology,29(11),1011-1017.
MLA	Hernandez J,et al."Microstructures and Hardness Properties for b-Phase Tie24Nbe4Zre7.9Sn Alloy Fabricated by Electron Beam Melting".Journal of Materials Science & Technology 29.11(2013):1011-1017.