Effects of Voids on Mechanical Property of Single Crystal γ-TiAl Alloys Containing Nb

doi:10.11896/cldb.19070089

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Effects of Voids on Mechanical Property of Single Crystal γ-TiAl Alloys Containing Nb
	Kou, Peipei 1,2; Feng, Ruicheng 1,2; Li, Haiyan 1,2; Li, Longlong 1,2; Wang, Maomao 1,2; Qi, Yongnian 1,2
刊名	Cailiao Daobao/Materials Reports
	2020-07-25
卷号	34 期号:14 页码:14140-14146
关键词	Titanium alloys Yield stress Dislocation sources Dynamics methods Gamma TiAl Gamma tial alloys Micro-defects Most likely Stretching process Tensile directions
ISSN号	1005023X
DOI	10.11896/cldb.19070089
英文摘要	The effects of void size, number and position on the mechanical properties of single crystal γ-TiAl alloys containing Nb were studied by mole-cular dynamics method. The relationship between the micro-defect evolution inside the material and the change of the mechanical properties of the material was analyzed. The results indicate that the yield strength and elastic modulus of single crystal γ-TiAl alloys are increased with the addition of Nb element. With the increase of void size and number, the yield strength of single crystal γ-TiAl alloys containing Nb decreases in sequence, which is mainly due to the voids as a dislocation source in the stretching process, which provides conditions for the nucleation and emission of dislocations. When several voids are distributed parallel to the tensile direction, the yield stress of the material is the largest. And when the distribution of the voids perpendicular to the tensile direction, the yield stress of the material is the smallest, which is the most likely to lead to the failure of the material. © 2020, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115207]
专题	机电工程学院
作者单位	1.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Kou, Peipei,Feng, Ruicheng,Li, Haiyan,et al. Effects of Voids on Mechanical Property of Single Crystal γ-TiAl Alloys Containing Nb[J]. Cailiao Daobao/Materials Reports,2020,34(14):14140-14146.
APA	Kou, Peipei,Feng, Ruicheng,Li, Haiyan,Li, Longlong,Wang, Maomao,&Qi, Yongnian.(2020).Effects of Voids on Mechanical Property of Single Crystal γ-TiAl Alloys Containing Nb.Cailiao Daobao/Materials Reports,34(14),14140-14146.
MLA	Kou, Peipei,et al."Effects of Voids on Mechanical Property of Single Crystal γ-TiAl Alloys Containing Nb".Cailiao Daobao/Materials Reports 34.14(2020):14140-14146.