|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Optimization of Nitrogen Bubbling Conditions for Extruded Mg Alloy with Balanced Mechanical Properties
||Wonseok Yang, Youngkyun Kim, Taeyang Kwak, Shae K. Kim, Hyunkyu Lim, Do Hyang Kim
|On-Site Speaker (Planned)
Although Mg alloys have attracted attention as light-weight structural materials, it has been limited to apply to practical products due to the disproportionate mechanical properties. According to our preliminary test, N<sub>2</sub> bubbling have improved the ultimate tensile strength and elongation of extruded Mg-3Al-1Zn-1Ca alloy from 362 MPa and 11.1 % to 374 MPa and 16.5 %. However, the conditions of N<sub>2</sub> bubbling are not established yet. In this study, mechanical properties of extruded Mg-3Al-1Zn-1Ca alloys, which were made by various operating temperatures and amounts of N<sub>2</sub> gas, were investigated to optimize the conditions of N<sub>2</sub> bubbling. The test specimens were prepared by indirect extruder with billets of diameter of 40 mm. The extrusion temperature and ratio were 270 <sup>o</sup>C and 20, respectively. Also, we discussed the effect of N<sub>2</sub> bubbling on Mg melt.