Enhancement of the strain hardening ability in ultrafine grained Mg alloys with high strength

Kim, W. J.; Hong, S. I.; Kim, Y. H.

doi:10.1016/j.scriptamat.2012.07.002

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Enhancement of the strain hardening ability in ultrafine grained Mg alloys with high strength

Kim, W. J.;
Hong, S. I.;
Kim, Y. H.

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WEB OF SCIENCE

58

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61

초록

Two thermo-mechanical processing methods involving severe plastic deformation (SPD) are proposed for the development of a novel microstructure having nanosized Mg17Al12 (beta) particles distributed within the interiors of ultrafine grains in Mg-Al based alloys. The first method involves deformation-induced break-up of the beta phase during SPD, while the second method involves low temperature dynamic precipitation during SPD followed by low temperature aging. The resulting processed materials exhibited very high yield strengths of over 380 MPa and distinct strain hardening properties. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

키워드

Severe plastic deformation; Magnesium alloys; Mechanical properties; High ratio differential speed rolling; MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; RATE SENSITIVITY; FLOW-STRESS; DUCTILITY; MICROSTRUCTURE; TEXTURE; SIZE; ECAP; DEFORMATION

제목: Enhancement of the strain hardening ability in ultrafine grained Mg alloys with high strength

저자: Kim, W. J.; Hong, S. I.; Kim, Y. H.

DOI: 10.1016/j.scriptamat.2012.07.002

발행일: 2012-10

유형: Article

저널명: Scripta Materialia

권: 67

호: 7-8

페이지: 689 ~ 692