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DOI | 10.1126/science.aap8716 |
Mechanistic origin and prediction of enhanced ductility in magnesium alloys | |
Wu, Zhaoxuan1,2; Ahmad, Rasool1; Yin, Binglun1; Sandloebes, Stefanie3; Curtin, W. A.1 | |
2018-01-26 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 359期号:6374页码:447-451 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Singapore; Germany |
英文摘要 | Pure magnesium exhibits poor ductility owing to pyramidal < c + a > dislocation transformations to immobile structures, making this lowest-density structural metal unusable for many applications where it could enhance energy efficiency. We show why magnesium can be made ductile by specific dilute solute additions, which increase the < c + a > cross-slip and multiplication rates to levels much faster than the deleterious < c + a > transformation, enabling both favorable texture during processing and continued plastic straining during deformation. A quantitative theory establishes the conditions for ductility as a function of alloy composition in very good agreement with experiments on many existing magnesium alloys, and the solute-enhanced cross-slip mechanism is confirmed by transmission electron microscopy observations in magnesium-yttrium. The mechanistic theory can quickly screen for alloy compositions favoring conditions for high ductility and may help in the development of high-formability magnesium alloys. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423283200044 |
WOS关键词 | SOLID-SOLUTION ALLOYS ; RARE EARTH ALLOYS ; STRETCH FORMABILITY ; MG-ZN ; ROOM-TEMPERATURE ; ZR ALLOYS ; MN ALLOY ; CE ALLOY ; TEXTURE ; CA |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/197845 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Ecole Polytech Fed Lausanne, Inst Mech Engn, CH-1015 Lausanne, Switzerland; 2.Inst High Performance Comp, 1 Fusionopolis Way,16-16 Connexis, Singapore 138632, Singapore; 3.RWTH Rheinisch Westfal TH Aachen Univ, Inst Met & Met Phys, Kopernikusstr 14, D-52074 Aachen, Germany |
推荐引用方式 GB/T 7714 | Wu, Zhaoxuan,Ahmad, Rasool,Yin, Binglun,et al. Mechanistic origin and prediction of enhanced ductility in magnesium alloys[J]. SCIENCE,2018,359(6374):447-451. |
APA | Wu, Zhaoxuan,Ahmad, Rasool,Yin, Binglun,Sandloebes, Stefanie,&Curtin, W. A..(2018).Mechanistic origin and prediction of enhanced ductility in magnesium alloys.SCIENCE,359(6374),447-451. |
MLA | Wu, Zhaoxuan,et al."Mechanistic origin and prediction of enhanced ductility in magnesium alloys".SCIENCE 359.6374(2018):447-451. |
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