Evolution of microstructure of full lamellar titanium alloy BT18Y solutionized at alpha+beta phase field

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	Evolution of microstructure of full lamellar titanium alloy BT18Y solutionized at alpha+beta phase field
	Yang, Y; Xu, F; Huang, AJ; Li, GP
通讯作者	Li, GP()
	2005-07-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	41 期号:7 页码:713-720
摘要	BT18Y titanium alloy was treated with several groups of heat treatment. After solutionized frectment at alpha + beta phase field, metalloscopy, transmission electron Microscope (TEM) and scanning electron microscopy (SEM) were employed to observe the microstructures. It was found that the continuous grain boundary (GB) alpha phase is spheroidizes and the edges of some intragranular primary alpha laths show "forked" morphology. The ultimate reason of the spheroidization of GB alpha is the diffusion of solute atoms due to the difference of solute concentration, which results from the different interfacial curvatures at different sites. The joint of two GB alpha lamellas also gives some contribution to the spheroidization of GB alpha. The "forked" morphology at the edge of primary alpha lath results from different interfacial structures and energies between phase and different parts of alpha lath. The incoherent interface between Chi phase and the edge of alpha lath has high interfacial energy and moves easily. When the alloy is solutionized at alpha + beta phase field, beta phase trends to grow into alpha lath and forms 0 lath, which results the "forked" morphology of primary alpha lath.
关键词	BT18Y titanium alloy grain boundary alpha phase (GB alpha) spheroidization primary alpha lath "forked" morphology
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000231033000008
出版者	SCIENCE PRESS
引用统计	被引频次：26[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/321006/83493
专题	中国科学院金属研究所
通讯作者	Li, GP
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Y,Xu, F,Huang, AJ,et al. Evolution of microstructure of full lamellar titanium alloy BT18Y solutionized at alpha+beta phase field[J]. ACTA METALLURGICA SINICA,2005,41(7):713-720.
APA	Yang, Y,Xu, F,Huang, AJ,&Li, GP.(2005).Evolution of microstructure of full lamellar titanium alloy BT18Y solutionized at alpha+beta phase field.ACTA METALLURGICA SINICA,41(7),713-720.
MLA	Yang, Y,et al."Evolution of microstructure of full lamellar titanium alloy BT18Y solutionized at alpha+beta phase field".ACTA METALLURGICA SINICA 41.7(2005):713-720.