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1. (WO2013115490) MAGNESIUM ALLOY HAVING HIGH DUCTILITY AND HIGH TOUGHNESS, AND PREPARATION METHOD THEREOF

Pub. No.:    WO/2013/115490    International Application No.:    PCT/KR2012/011831
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Tue Jan 01 00:59:59 CET 2013
IPC: C22C 23/00
C22C 23/04
C22C 23/06
B22D 21/04
Applicants: KOREA INSTITUTE OF MACHINERY AND MATERIALS
한국기계연구원
Inventors: PARK, Sung Hyuk
박성혁
KIM, Young Min
김영민
KIM, Ha-Sik
김하식
YOU, Bong Sun
유봉선
YIM, Chang Dong
임창동
Title: MAGNESIUM ALLOY HAVING HIGH DUCTILITY AND HIGH TOUGHNESS, AND PREPARATION METHOD THEREOF
Abstract:
The present invention relates to a magnesium alloy having high ductility and high toughness, and a preparation method thereof, and more specifically, to: a magnesium alloy having high ductility and high toughness, comprising 1.0-3.5 wt% of tin (Sn), 0.05-3.0 wt% of zinc (Zn), and the balance of magnesium and inevitable impurities; and a preparation method thereof. According to the present invention, the magnesium alloy is prepared by adding zinc, and optionally, one or more elements selected from aluminum, manganese and rare earth elements in a specific content ratio to a magnesium alloy capable of precipitation strengthening containing a small amount of tin so as to form a small amount of fine precipitates, thereby simultaneously minimizing a decrease in ductility of a material due to excessive precipitates and strengthening precipitation. Therefore, the magnesium alloy has prominent ductility and toughness compared with an extrusion material prepared from a conventional commercial magnesium alloy, and thus can be applied to a whole industry such as transportation equipment and the like.