Oxygen induced phase transformation in an alpha plus beta titanium alloy

doi:10.1016/j.matchemphys.2018.10.046

IMR OpenIR

	Oxygen induced phase transformation in an alpha plus beta titanium alloy
	Liu, Chengze 1,2; Li, Geping 1; Yuan, Fusen 1,2; Ali, Muhammad 1,2; Han, Fuzhou 1,2; Zhang, Yingdong 1,2; Gu, Hengfei 1,3
通讯作者	Li, Geping(gpli@imr.ac.cn)
	2019-02-01
发表期刊	MATERIALS CHEMISTRY AND PHYSICS
ISSN	0254-0584
卷号	223 页码:75-77
摘要	It is critical to understand oxygen (O) ingress behavior in titanium alloys at high temperatures, since it was directly associated with their high-temperature performance. Investigations revealed that the diffusion of O would result in a uniform alpha-case layer beneath the surfaces of titanium alloys. This layer greatly affected the mechanical performance of the alloys. In the present study, a novel O ingress phenomenon in an alpha + beta titanium alloy was observed. After the isothermal treatment in the air, a two-layered region beneath the specimen surfaces was formed: the outer layer (layer A) uniformly grew parallel to the diffusion direction of O; while the inner layer (layer B) precipitated within the first beta grain beneath layer A, arranging in specific orientations. By experimental investigation as well as theoretical analysis, the formation mechanism of the unique layers was understood: with the diffusion of O, an alpha + beta layer (layer A) was uniformly formed beneath the specimen surfaces, while creating a new interface between layer A and the matrix. This interface acted similarly as alpha(GB)( )during the precipitation of alpha(WGB) (layer B). In addition, Burgers orientation relationship was strictly obeyed during the formation of layer B.
关键词	Phase transformation Titanium Interface EBSD Nucleation
DOI	10.1016/j.matchemphys.2018.10.046
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000456902400011
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131543
专题	中国科学院金属研究所
通讯作者	Li, Geping
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 96 JinZhai Rd, Hefei 230026, Anhui, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chengze,Li, Geping,Yuan, Fusen,et al. Oxygen induced phase transformation in an alpha plus beta titanium alloy[J]. MATERIALS CHEMISTRY AND PHYSICS,2019,223:75-77.
APA	Liu, Chengze.,Li, Geping.,Yuan, Fusen.,Ali, Muhammad.,Han, Fuzhou.,...&Gu, Hengfei.(2019).Oxygen induced phase transformation in an alpha plus beta titanium alloy.MATERIALS CHEMISTRY AND PHYSICS,223,75-77.
MLA	Liu, Chengze,et al."Oxygen induced phase transformation in an alpha plus beta titanium alloy".MATERIALS CHEMISTRY AND PHYSICS 223(2019):75-77.