Mechanism of damage, fracture and toughening of TiAl alloys

	Mechanism of damage, fracture and toughening of TiAl alloys
	Cao, R.; Chen, J.H.
	2009
会议名称	12th International Conference on Fracture 2009, ICF-12
会议录名称	12th International Conference on Fracture 2009, ICF-12
卷号	1
页码	106-115
会议日期	July 12, 2009 - July 17, 2009
会议地点	Ottawa, ON, Canada
出版者	International Congress on Fracture
摘要	In this paper the authors summarize the results of studies achieved in recent years on the microscopic mechanisms of fracture of TiAl alloys: (1) Cracks prefer to be initiated and propagated along lamellar interfaces, the propagation of crack can take three ways. (2) Mechanism of fracture includes two modes of critical crack triggering fracture and connection of microcracks in the weakest section. (3) Effects of microcrack damage represent the facial effects and the volumetric effects. (4) mechanisms of toughening include: blunting of crack tip, bifurcation of the crack tip, deflection of the crack by lamellae and formation of a diffuse zone of microcracks, stopping the crack at the boundary of a grain with unfavorable orientation or grains and forcing the crack to bypass the barrier grain and take a tortuous path, or cross the barrier grain spending more energy.
关键词	Aluminum alloys Binary alloys Crack propagation Cracks Microcracks Titanium alloys Toughening Blunting of crack tips Damage Lamellar interfaces Loading rate Microscopic mechanisms Propagation of cracks TiAl alloy Tortuous path
收录类别	EI
语种	英语
EI入藏号	20124815719760
EI主题词	Crack tips
来源库	Compendex
分类代码	541.2 Aluminum Alloys - 542.3 Titanium and Alloys - 951 Materials Science
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/116695
专题	材料科学与工程学院_特聘教授组材料科学与工程学院
作者单位	State Key Laboratory of Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
第一作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Cao, R.,Chen, J.H.. Mechanism of damage, fracture and toughening of TiAl alloys[C]:International Congress on Fracture,2009:106-115.