PLC effect and its explanation of LA41 magnesium alloys
文献类型：期刊论文
| 作者 | Wang, C; Xu, YB; Han, EH |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2006-02-11 |
| 卷号 | 42期号:2页码:191-194 |
| 关键词 | magnesium alloy PLC effect dynamic strain aging strain rate sensitivity |
| ISSN号 | 0412-1961 |
| 通讯作者 | Wang, C(congwang@imr.ac.cn) |
| 英文摘要 | Uni-axial tensile deformation of LA41 magnesium alloy has been carried out and PLC (Portevin-Le Chatelier) effect, also known as serrated flow or plastic instability, is observed. This kind of alloy exhibits negative strain rate sensitivity (SRS) at room temperature, that is, SRS is negative at the strain rate range from 3.33 x 10(-4) to 6.66 x 10(-3) s(-1) at ambient temperature. Both ultimate stress (sigma(b)) and 0.2% proof stress (sigma(0.2)) decrease with increasing strain rate, whilst critical strain (epsilon(c)) of serrated flow is found to rise with enhancing strain rate. A new explanation for this unusual phenomenon is presented. The model of dynamic strain aging (DSA) is established though diffusion of solute atoms to mobile dislocations, which are temporarily arrested at obstacles. Such interaction renders the movement of mobile dislocations more difficult, consequently, necessitates the required force to overcome the obstacles. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000235929000017 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/85526]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, C |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, C,Xu, YB,Han, EH. PLC effect and its explanation of LA41 magnesium alloys[J]. ACTA METALLURGICA SINICA,2006,42(2):191-194. |
| APA | Wang, C,Xu, YB,&Han, EH.(2006).PLC effect and its explanation of LA41 magnesium alloys.ACTA METALLURGICA SINICA,42(2),191-194. |
| MLA | Wang, C,et al."PLC effect and its explanation of LA41 magnesium alloys".ACTA METALLURGICA SINICA 42.2(2006):191-194. |
入库方式： OAI收割
来源：金属研究所
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