当演员组微观结构上的很少 Ce 增加的效果并且爬 Mg-3Sn-2Ca 镁合金的性质被调查。结果显示那增加 0.5%( 集体部分) 到 Mg-3Sn-2Ca 合金的 Ce 不在合金引起任何新阶段的形成。然而,在与 0.5%Ce 增加的当演员组 Mg-3Sn-2Ca 合金的一个有趣的微结构变化被观察。在把 0.5%Ce 加到 Mg-3Sn-2Ca 合金,不是 CaMgSn 的仅仅体积部分以后,在合金的阶段被减少而且在合金的 CaMgSn 阶段被精制。另外,把 0.5%Ce 加到 Mg-3Sn-2Ca 合金能也改进合金的爬抵抗的性质。在把 0.5%Ce 加到 Mg-3Sn-2Ca 合金以后,第二爬在 150 吠敨牯瑥捩污猠'T 敳畱湥 ? 楹汥? 潬楣戠獡摥漠 ? 汙? 的合金的率 ?? 搲礠敩摬挠楲整楲湯愠摮琠牨敥欠湩獤漠 ? 慨摲湥湩 ? 潭敤 ? 敷敲挠污畣慬整 ? 湡 ? 潣灭牡摥眠吗?
The effects of little Ce addition on the as-cast microstructure and creep properties of Mg-3Sn-2Ca magnesium alloy were investigated. The results indicate that adding 0.5% (mass fraction) Ce to Mg-3Sn-2Ca alloy does not cause the formation of any new phase in the alloy. However, an interesting microstructural change in the as-cast Mg-3Sn-2Ca alloy added with 0.5%Ce is observed. After adding 0.5%Ce to Mg-3Sn-2Ca alloy, not only the volume fraction of CaMgSn phase in the alloy is decreased but also the CaMgSn phases in the alloy are refined. In addition, adding 0.5%Ce to Mg-3Sn-2Ca alloy can also improve the creep-resistant properties of the alloy. After adding 0.5%Ce to Mg-3Sn-2Ca alloy, the second creep rate of the alloy at 150 ℃ and 70 MPa for 100 h changes from 3.28×10^-8 to 1.81 × 10^-8 s^-1.