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

doi:10.1016/j.jeurceramsoc.2019.11.062

HFCAS OpenIR

	Investigation of Ti3AlC2 formation mechanism through diffusional reaction between carbon and Mo-modified Ti6Al4V
	Xiao, Zhiyuan 1; Ouyang, Sheng 2; Zhu, Xiaoguang1 ; Xu, Wei1 ; Wang, Zhaoming 1; Shao, Cheng 1
	2020-04-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
通讯作者	Xiao, Zhiyuan(kilo2010@126.com)
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.
关键词	Ti3AlC2 TiC Diffusion reaction Nanotwin Titanium alloy
DOI	10.1016/j.jeurceramsoc.2019.11.062
关键词[WOS]	COMBUSTION SYNTHESIS ; M(N+1)AX(N) PHASES ; RAMAN-SCATTERING ; AL ; TI2ALC ; VACANCIES ; ENERGY ; TI
收录类别	SCI
语种	英语
资助项目	CASHIPS Director's Fund[YZJJ2019QN15]
项目资助者	CASHIPS Director's Fund
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000514747500022
出版者	ELSEVIER SCI LTD
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103928
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
第一作者单位	中科院固体物理研究所
通讯作者单位	中科院固体物理研究所
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).