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Distinct dendritic α phase emerging on the surface of primary α phase in a compressed near-α titanium alloy

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Liu Z 1,2   Zhao Z B 1 *   Liu J R 1 *   Wang Q J 1   Yang R 1,2  
文摘 The characteristic of the surface morphology of primary α phase was studied in a deformed near-a titanium alloy. Dendritic α phase emerged on the surfaces of primary α phase when the alloy was air-cooled in α+β phase field after deformation. The dendritic a grain has the same orientation with its original primary α grain. The formation of the dendritic α phase could be explained by interface instability in epitaxial growth process of the primary α phase. The dislocations induced by deformation could facilitate the formation of dendritic α phase leading to the dendritic α phase and more obvious with the increase of strain. The growth of dendritic α phase was finally limited by the nucleation of second α phase with cooling.
来源 Journal of Materials Science & Technology ,2018,34(4):666-669 【核心库】
DOI 10.1016/j.jmst.2017.10.011
关键词 Epitaxial growth ; Dendritic α phase ; Microstructure ; Interface instability ; Hot deformation
地址

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016  

2. School of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230000

语种 英文
文献类型 研究性论文
ISSN 1005-0302
学科 金属学与金属工艺
文献收藏号 CSCD:6219165

参考文献 共 32 共2页

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引证文献 5

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2 刘征 电子束快速成形制备TC4合金的组织和拉伸性能分析 金属学报,2019,55(6):692-700
CSCD被引 4

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