Mg 조성에 따른 Zn-Mg 합금의 기계적 특성 평가

• Published in: 대한금속·재료학회지, 51(6) Vol. 51; no. 6; pp. 393 - 398
• Main Authors: 유지민, Ji Min Yu, 변종민, Jong Min Byun, 김태엽, Tae Yeob Kim, 정우성, Woo Sung Jung, 김영도, Young Do Kim
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 20.06.2013; 대한금속·재료학회
• Subjects: alloys; casting; compression test; hardness test; microstructure; 재료공학
• ISSN: 1738-8228; 2288-8241
• DOI: 10.3365/KJMM.2013.51.6.393

In this study, Zn-Mg alloys with various Mg contents were manufactured by the casting method using an induction melting furnace. Then microstructure analysis and mechanical property tests were carried out. In the Zn-Mg alloy with a content of less than 7 wt%Mg, the hardness of the Zn-Mg alloys gradually increased as the Mg content increased but in the alloy with more than Zn-7 wt%Mg, the hardness was almost the same. Enhanced hardness is induced by the intermetallic compounds phase of Mg2Zn11 and MgZn2. In the compression test, Zn-3 wt%Mg had the best compression strength at 610 MPa, but Zn-7 wt%Mg and Zn-10 wt%Mg had a low compression strength at 343 Mpa and 111 MPa, respectively, although these alloys have excellent hardness. This study verified that Zn-Mg alloys containing a Zn phase have more toughness than those composed of only intermetallic compounds such as Mg2Zn11 and MgZn2. (Received November 19, 2012).