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Effects of microcrack-damage on fracture behavior of TiAl alloy part I displacement-controlled tensile test | |
Cao, R.1,2; Zhu, H.2; Chen, J. H.1,2; Zhang, J.3; Ya, H. J.2 | |
2008-02-15 | |
发表期刊 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING |
ISSN | 0921-5093 |
卷号 | 474期号:1-2页码:1-14 |
摘要 | Specimens of a directionally solidified cast of a fully lamellar TiAl alloy were tensile tested using displacement-controlled procedure. Numbers of microcracks were measured for specimens after they were subjected to various preload-unload processes. Combined with detailed fracture surface observations, the following effects of microcrack-damage on fracture behavior of TiAl alloy are proposed-(1) Volumetric effect: the apparent plastic elongation incorporates both plastic strain and the elongation caused by microcracks. (2) Volumetric effect: microcracks produced in entire specimen volume decrease the apparent elastic modulus and produce a stress-softening sector of the load-displacement curve just before final fracture. (3) Facial effect: microcracks extended on a weakest cross-section decrease and determine the fracture load. (C) 2007 Elsevier B.V. All rights reserved. |
关键词 | TiAl alloy damage fracture behavior microcrack |
DOI | 10.1016/j.msea.2007.06.055 |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
WOS记录号 | WOS:000253030500001 |
出版者 | ELSEVIER SCIENCE SA |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/35543 |
专题 | 材料科学与工程学院 |
通讯作者 | Chen, J. H. |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Metal Mat, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Metal Mat, Lanzhou 730050, Peoples R China 3.Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China |
第一作者单位 | 兰州理工大学 |
通讯作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Cao, R.,Zhu, H.,Chen, J. H.,et al. Effects of microcrack-damage on fracture behavior of TiAl alloy part I displacement-controlled tensile test[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2008,474(1-2):1-14. |
APA | Cao, R.,Zhu, H.,Chen, J. H.,Zhang, J.,&Ya, H. J..(2008).Effects of microcrack-damage on fracture behavior of TiAl alloy part I displacement-controlled tensile test.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,474(1-2),1-14. |
MLA | Cao, R.,et al."Effects of microcrack-damage on fracture behavior of TiAl alloy part I displacement-controlled tensile test".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 474.1-2(2008):1-14. |
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