| Title |
Evaluation of the Mechanical Properties of Zn-Mg Alloys with Composition of Mg |
| Authors |
유지민(Ji Min Yu); 변종민(Jong Min Byun); 김태엽(Tae Yeob Kim); 정우성(Woo Sung Jung); 김영도(Young Do Kim) |
| DOI |
https://doi.org/10.3365/KJMM.2013.51.6.393 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
alloys; casting; microstructure; hardness test; compression test |
| Abstract |
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). |