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Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition
Cai Yusheng; Liu Renci; Liu Dong; Cui Yuyou; Yang Rui
Corresponding AuthorCai Yusheng(yscai14b@imr.ac.cn)
2017-06-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume46Pages:15-19
AbstractA Ti(2)ALNb-base alloy was deposited on a TiAl-base alloy by micro-beam plasma melting deposition. Optical microscope (OM), scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), X-ray diffraction (XRD) and microhardness testing methods were used to investigate the typical microstructure evolution, phase transformation and the corresponding hardness evolution. Results show that micro-beam plasma melting deposited Ti(2)ALNb-base alloy are mainly composed of beta, O and alpha(2) phases. With the increase of distance from TiAl-base alloy, a series of phase evolutions along the compositional gradient occurs: gamma+alpha(2)/gamma ->beta(solid solution)+O -> beta(2)+O+alpha(2)(widmannstatten structure)->beta/(solid solution)+O. The microhardness of gradient material shows a wave-like distribution. The phase morphological evolution during forming of micro-beam plasma melting deposition gradient materials was explained based on the effect of the various elements on the phase stability in TiAl/Ti2AlNb-base alloy combining with the effects of special thermal cycle and heat accumulation in micro-beam plasma melting deposition forming.
KeywordTi2AlNb-base alloy micro-beam plasma microstructure microhardness
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000406570100004
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124816
Collection中国科学院金属研究所
Corresponding AuthorCai Yusheng
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Cai Yusheng,Liu Renci,Liu Dong,et al. Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:15-19.
APA Cai Yusheng,Liu Renci,Liu Dong,Cui Yuyou,&Yang Rui.(2017).Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition.RARE METAL MATERIALS AND ENGINEERING,46,15-19.
MLA Cai Yusheng,et al."Microstructure and Phase Evolution in TiAl-Ti2AlNb Gradient Material Prepared by Micro-beam Plasma Melting Deposition".RARE METAL MATERIALS AND ENGINEERING 46(2017):15-19.
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