Institutional Repository of Coll Mat Sci & Engn
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. |
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