2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 5. Marquis Intl. Symp. / New and Advanced Materials and Technologies
| Editors: | Kongoli F, Marquis F, Chikhradze N |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2017 |
| Pages: | 590 pages |
| ISBN: | 978-1-987820-69-0 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Effect of Deformation Twins on Recrystallization Behavior of Magnesium Alloy Sheets
Jae H. Kim1; Byeong-Chan Suh2; Ji Hyun Hwang3; Myeong-Shik Shim1; Nack Kim1;1POSTECH, Pohang, Korea (Republic of [South] Korea); 2NIMS, Tsukuba, Japan; 3POHANG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Pohang, Korea (Republic of [South] Korea);
Type of Paper: Regular
Id Paper: 110
Topic: 43
Abstract:
In recent years, there has been a great interest in the weight reduction of automobiles for energy conservation and environmental protection. One of the most effective ways to reduce the weight of vehicles is the use of lightweight materials such as Mg alloys as structural components in vehicles. Mg alloys have the lowest density among commercially available structural alloys and recent studies have shown that some Mg alloys have good mechanical properties comparable to those of Al alloys. However, Mg alloys have a critical shortcoming that needs to be overcome, poor formability at room temperature mainly originated from strong basal texture developed during thermomechanical processing. Although several Mg alloys show random/weak texture and accordingly good room temperature formability, most of such alloys rely on the usage of expensive rare earth elements. In the present work, an attempt has been made to modify the texture of Mg alloys by utilizing deformation twins as nuclei for recrystallization. The main impetus for such approach comes from the idea that various deformation twins formed in Mg alloys have different orientation relationship with the matrix and accordingly can induce the formation of recrystallized grains with different orientations. The orientation relationship between parent grain, deformation twins, and recrystallized grains has been analyzed by ex-situ heating EBSD in both as-rolled and annealed conditions to understand how deformation twins affect the orientation of recrystallized grains.