Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5451591 | Journal of Materials Science & Technology | 2017 | 31 Pages |
Abstract
In this study, the effects of processing parameters (such as pouring temperature and mould pre-heating temperature) and flame-retardant content on the microstructure and fluidity of sand-cast magnesium (Mg) alloy Mg-10Gd-3Y-0.5Zr (GW103K) were systematically investigated. It was found that the increase of pouring temperature leads to coarsened microstructure and decreased fluidity of sand-cast GW103K alloy. Increase of mould pre-heating temperature incurs coarsening of as-cast microstructure and increase of fluidity. The addition of flame-retardant into moulding sand has a negligible influence on the microstructure of sand-cast GW103K alloy. With the increase in flame-retardant content, fluidity of the alloy initially increases and then decreases. The optimized process parameters and flame-retardant addition were obtained to be pouring temperature of 750 °C, mould temperature of 110 °C, and flame-retardant addition of 1%. The fire retardant mechanism of moulding sand was determined.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
Yanlei Li, Guohua Wu, Antao Chen, Wencai Liu, Yingxin Wang, Liang Zhang,