Microstructures and Hardness Properties for beta-Phase Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Electron Beam Melting

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	Microstructures and Hardness Properties for beta-Phase Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Electron Beam Melting
	J. Hernandez; S. J. Li; E. Martinez; L. E. Murr; X. M. Pan; K. N. Amato; X. Y. Cheng; F. Yang; C. A. Terrazas; S. M. Gaytan; Y. L. Hao; R. Yang; F. Medina; R. B. Wicker
	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 beta-phase microstructure. However, it was found by transmission electron microscopy that the EBM-fabricated product had plate morphology with space similar to 100-200 nm. Although the corresponding selected area diffraction patterns can be indexed by beta-phase plus alpha''-martensite with orthorhombic crystal structure, the dark-field analyses failed to observe the alpha''-martensite. Such phenomenon was also found in deformed gum metals and explained by stress-induced diffusion scattering due to phonon softening.
部门归属	[hernandez, j. ; martinez, e. ; murr, l. e. ; amato, k. n.] univ texas el paso, dept met & mat engn, el paso, tx 79968 usa. [li, s. j. ; cheng, x. y. ; yang, f. ; hao, y. l. ; yang, r.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110161, peoples r china. [pan, x. m.] dalian univ technol, sch mat sci & engn, dalian 116024, peoples r china. [terrazas, c. a. ; gaytan, s. m. ; medina, f. ; wicker, r. b.] univ texas el paso, wm keck ctr innovat 3d, el paso, tx 79968 usa. ; murr, le (reprint author), univ texas el paso, dept met & mat engn, el paso, tx 79968 usa. ; lemurr@utep.edu
关键词	Biomedical Titanium Alloy Alpha''-martensite Electron Beam Melting Hardness Optical And Electron Microscopy Nb Deformation Behavior Laser Zr
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71257
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Hernandez,S. J. Li,E. Martinez,et al. Microstructures and Hardness Properties for beta-Phase Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Electron Beam Melting[J]. Journal of Materials Science & Technology,2013,29(11):1011-1017.
APA	J. Hernandez.,S. J. Li.,E. Martinez.,L. E. Murr.,X. M. Pan.,...&R. B. Wicker.(2013).Microstructures and Hardness Properties for beta-Phase Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Electron Beam Melting.Journal of Materials Science & Technology,29(11),1011-1017.
MLA	J. Hernandez,et al."Microstructures and Hardness Properties for beta-Phase Ti-24Nb-4Zr-7.9Sn Alloy Fabricated by Electron Beam Melting".Journal of Materials Science & Technology 29.11(2013):1011-1017.