Application of Mischmetal in Al-Si Alloy for Piston

Cai Huimin  Chen Jinshui  Sun Yongfang  Zhang Xueguang

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Application of Mischmetal in Al-Si Alloy for Piston
Issue 6, Pages: 9-10(2001)
Published： 2001 ，
DOI：

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[1]蔡惠民,,,,,,,,,,陈金水,,,,,,,,,,孙永芳,,,,,,,,,,张学光.混合稀土在Al-Si合金中的应用[J].特种铸造及有色合金,2001(06):9-10+3.

Cai Huimin Chen Jinshui Sun Yongfang Zhang Xueguang. Application of Mischmetal in Al-Si Alloy for Piston. [J]. Special Casting & Nonferrous Alloys (6):9-10(2001)
[1]蔡惠民,,,,,,,,,,陈金水,,,,,,,,,,孙永芳,,,,,,,,,,张学光.混合稀土在Al-Si合金中的应用[J].特种铸造及有色合金,2001(06):9-10+3. DOI：

Cai Huimin Chen Jinshui Sun Yongfang Zhang Xueguang. Application of Mischmetal in Al-Si Alloy for Piston. [J]. Special Casting & Nonferrous Alloys (6):9-10(2001) DOI：

摘要

报告了在ZL10 8合金中加入混合稀土金属对室温和高温性能影响的系统研究结果。确定RE处理的工艺及加入量

认为加入质量分数为 1.5 %的RE有最佳效果。与Na盐变质情况对比试验表明

RE处理合金与Na处理有类似的变质效果

高温性能优于Na变质。用质量分数为 1.5 %的RE处理ZL10 8合金的活塞尺寸稳定性和耐久性比Na变质好得多

能满足 492QS汽油机的使用要求。

Abstract

Influence of mischmetal addition on the properties of ZL108 alloy at ambient and high temperature was studied. The treatment technology and addition of mischmetal have been determined

and addition of w （mischmetal）=1.5% has optimum modification effect. The effect modified by mischmetal is similar to those of by sodium

but properties of mischmetal modified Al Si at high temperature are better. The dimensional stability and durality of w （mischmetal）=1.5% treated ZL108 alloy for the piston could meet the technical requirements for 492QS gasoline engine