| Microstructure evolution and deformation features of AZ31 Mg-alloy during creep | |
| Tian, SG; Wang, L; Sohn, KY; Kim, KH; Xu, YB; Hu, ZQ | |
| Corresponding Author | Tian, SG(tiansugui2003@163.com) |
| 2006-01-15 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 415Issue:1-2Pages:309-316 |
| Abstract | By means of the measurement of the creep curve and the observation of SEM and transmission electron microscope (TEM), an investigation has been made into the microstructure evolution and deformation features of AZ31 Mg-alloy during high temperature creep. Results show that the deformation features of the alloy in the primary stage of creep are that significant amount of dislocation slips are activated on basal and non-basal planes, then these ones are concentrated into the dislocation cells or walls as creep goes on. At the same time, twinning occurs as an additional deformation mechanism in the role of the compatibility stress. During steady state creep, the dislocation cells are transformed into the subgrains, then, the protrusion and coalition of the sub-boundaries results in the occurrence of dynamic recovery (DRV). After the dynamic recrystallization (DRX), the multiple slips in the grain interiors are considered to be the main deformed mechanism in the later stage of the steady state creep. An obvious feature of creep entering the tertiary stage is that the cracks appear on the locations of the triple junction. As creep continues, the cracks are viscous expanded along the grain boundaries; this is taken for being the fracture mechanism of the alloy crept to failure. The multiple slips in the grain interiors and the cracks expanded viscous along the grain boundary occur in whole of specimens, that, together with the twins and dynamic recrystallization, is responsible for the rapid increase of the strain rate in the later stage during creep. (c) 2005 Elsevier B.V. All rights reserved. |
| Keyword | AZ31 Mg-alloy creep dislocation slip twinning dynamic recrystallization deformation mechanism |
| DOI | 10.1016/j.msea.2005.10.015 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000234270400041 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/88965 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tian, SG |
| Affiliation | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Korea Inst Machinery & Mat, Chang Won 641010, South Korea 3.Chinese Acad Sci, Met Res Inst, State Key Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Tian, SG,Wang, L,Sohn, KY,et al. Microstructure evolution and deformation features of AZ31 Mg-alloy during creep[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2006,415(1-2):309-316. |
| APA | Tian, SG,Wang, L,Sohn, KY,Kim, KH,Xu, YB,&Hu, ZQ.(2006).Microstructure evolution and deformation features of AZ31 Mg-alloy during creep.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,415(1-2),309-316. |
| MLA | Tian, SG,et al."Microstructure evolution and deformation features of AZ31 Mg-alloy during creep".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 415.1-2(2006):309-316. |
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