铸造2013，Vol.62Issue(3)：235-238,4.
Si含量对Mg-5Sn-1.5Al-1.2Zn合金组织性能的影响
Influence of Si Content on Microstructure and Properties of Mg-5Sn-1.5Al-1.2Zn Magnesium Alloy
摘要
Abstract
The effects of silicon content on as-cast microstructure and mechanical properties of Mg-5Sn-1. 5Al-12Zn magnesium alloy were studied when silicon element was added into melt in the form of magnesium-silicon interalloy with the range of 0-1.6%. The results indicate that Mg2Si is the strengthening phase made by combining alloying element silicon and magnesium matrix, and around Mg2Si phase Mg2(Si, Sn) composition is found, the emerging of Mg2(Si, Sn) advances the forming of τ-Mg32(Al, Zn)49 that is produced by Al and Zn elements. When Si element changes from 0 to 1.6%, tensile strength and elongation of the alloy display a trend which increase firstly and then decrease, its tensile strength and elongation match better when Si content is 1.0%, while hardness of the alloy is improved in the range of 0-1.6%Si, the increment of hardness becomes slow as Si content in the range of 1.2%-1.6%.关键词
Mg-Sn-Al-Zn合金/Si/显微组织/力学性能Key words
Mg-Sn-Al-Zn alloy/ Si/ microstructure/ mechanical property分类
矿业与冶金引用本文复制引用
张建新,郭宇,郭学锋..Si含量对Mg-5Sn-1.5Al-1.2Zn合金组织性能的影响[J].铸造,2013,62(3):235-238,4.基金项目
国家自然科学基金项目(51271073) （51271073）
河南省重点攻关项目(102102210031). （102102210031）
