Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V

doi:10.1016/j.jeurceramsoc.2019.11.062

	Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V
	Xiao, Zhiyuan 1; Ouyang, Sheng 2; Zhu, Xiaoguang 1; Xu, Wei 1; Wang, Zhaoming 1; Shao, Cheng 1
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2020-04-01
卷号	40
关键词	Ti3AlC2 TiC Diffusion reaction Nanotwin Titanium alloy
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2019.11.062
通讯作者	Xiao, Zhiyuan(kilo2010@126.com)
英文摘要	Carbon and Mo-coated Ti6Al4V alloy diffusion couple was used to investigate Mo-modified diffusion reaction between carbon and Ti6Al4V. Randomly dispersed carbide particles were observed in Ti6Al4V alloy after 900 degrees C exposure. Carbide particles were found evolving from defective TiCx (x < 1) to mixture of TiCx and defective Ti3AlC2. Although Mo atoms were hardly detected in particles, their dilution effect along Ti alloy grain boundary (GB) is beneficial to carbon diffusion and carbide formation along GB. Based on high-resolution TEM (HRTEM) imaging, high density stacking faults (SFs) and nanotwins were observed in TiCx particles which explain Raman activation of defects in TiC. Formation of SFs and nanotwins in TiCx is attributed to carbon vacancies, which inversely promotes incoherent twin boundary (ITB) formation. Transformation from TiCx to Ti3AlC2 is considered driven by Al indiffusion along ITBs. Intergrowth of TiCx in defective Ti3AlC2 is the compromise to low Al concentration in Ti6Al4V.
资助项目	CASHIPS Director's Fund[YZJJ2019QN15]
WOS关键词	COMBUSTION SYNTHESIS ; M(N+1)AX(N) PHASES ; RAMAN-SCATTERING ; AL ; TI2ALC ; VACANCIES ; ENERGY ; TI
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000514747500022
资助机构	CASHIPS Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103927]
专题	中国科学院合肥物质科学研究院
通讯作者	Xiao, Zhiyuan
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Zhiyuan,Ouyang, Sheng,Zhu, Xiaoguang,et al. Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020,40.
APA	Xiao, Zhiyuan,Ouyang, Sheng,Zhu, Xiaoguang,Xu, Wei,Wang, Zhaoming,&Shao, Cheng.(2020).Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,40.
MLA	Xiao, Zhiyuan,et al."Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 40(2020).