中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2014年
1期
53-60
,共8页
叶新%鲁忠臣%曾美琴%胡仁宗%朱敏
葉新%魯忠臣%曾美琴%鬍仁宗%硃敏
협신%로충신%증미금%호인종%주민
Al-Sn-Si合金%机械合金化%摩擦性能
Al-Sn-Si閤金%機械閤金化%摩抆性能
Al-Sn-Si합금%궤계합금화%마찰성능
Al-Sn-Si alloy%mechanical alloying%wear properties
利用机械合金化方法制备出Al-12%Sn-x%Si合金粉末,然后将其压制成型,并进行烧结得到块体合金;运用X线衍射仪(XRD)和扫描电镜(SEM)等研究Si添加量对Al-12%Sn合金组织和性能的影响。结果表明:添加Si使得Al-12%Sn合金中Sn相变得更加细小且均匀分布,并且通过形成Al-Si共晶液相能够有效改善合金的烧结活性,提高合金的致密度;随着合金中 Si 添加量增加,合金的硬度、强度和塑性都有大幅度提升。此外,添加Si的Al-12%Sn合金的摩擦磨损性能也有较大提高,Si含量为2.5%时,合金具有最优的摩擦性能。
利用機械閤金化方法製備齣Al-12%Sn-x%Si閤金粉末,然後將其壓製成型,併進行燒結得到塊體閤金;運用X線衍射儀(XRD)和掃描電鏡(SEM)等研究Si添加量對Al-12%Sn閤金組織和性能的影響。結果錶明:添加Si使得Al-12%Sn閤金中Sn相變得更加細小且均勻分佈,併且通過形成Al-Si共晶液相能夠有效改善閤金的燒結活性,提高閤金的緻密度;隨著閤金中 Si 添加量增加,閤金的硬度、彊度和塑性都有大幅度提升。此外,添加Si的Al-12%Sn閤金的摩抆磨損性能也有較大提高,Si含量為2.5%時,閤金具有最優的摩抆性能。
이용궤계합금화방법제비출Al-12%Sn-x%Si합금분말,연후장기압제성형,병진행소결득도괴체합금;운용X선연사의(XRD)화소묘전경(SEM)등연구Si첨가량대Al-12%Sn합금조직화성능적영향。결과표명:첨가Si사득Al-12%Sn합금중Sn상변득경가세소차균균분포,병차통과형성Al-Si공정액상능구유효개선합금적소결활성,제고합금적치밀도;수착합금중 Si 첨가량증가,합금적경도、강도화소성도유대폭도제승。차외,첨가Si적Al-12%Sn합금적마찰마손성능야유교대제고,Si함량위2.5%시,합금구유최우적마찰성능。
The mechanical alloying (MA) was used to prepare Al-12%Sn-x%Si alloy powders, and then, the bulk alloy was obtained by a combination of cold pressing and conventional powder sintering. The effects of Si addition on the microstructure and properties were investigated by XRD and SEM. The results show that appropriate Si addition can achieve the uniform Sn distribution in Al-12%Sn matrix. It can also effectively facilitate sintering due to the formation of Al-Si eutectic liquid phase, and significantly improve the densification of alloy. With the Si addition increasing, the hardness, strength and ductility enhance obviously. In addition, Si addition can also develop excellent wear properties in Al-12%Sn alloys, furthermore, when the Si addition is 2.5%, Al-12%Sn-2.5%Si has the best wear properties.