Te对Al-7Si-0.3Mg合金组织和力学性能的影响

刘辉; 杨淋; 罗琨; 张磊; 尧军平

doi:10.15980/j.tzzz.2014.05.019

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Te对Al-7Si-0.3Mg合金组织和力学性能的影响
Effect of Te on the Microstructure and Mechanical Properties of Al-7Si-0.3Mg Alloys
2014年34卷第5期页码：538-540
纸质出版日期： 2014 ，
DOI： 10.15980/j.tzzz.2014.05.019

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[1]刘辉,杨淋,罗琨,张磊,尧军平.Te对Al-7Si-0.3Mg合金组织和力学性能的影响[J].特种铸造及有色合金,2014,34(05):538-540.

Liu Hui, Yang Lin, Luo Kun, et al. Effect of Te on the Microstructure and Mechanical Properties of Al-7Si-0.3Mg Alloys[J]. Special Casting & Nonferrous Alloys, 2014,34(5):538-540.
[1]刘辉,杨淋,罗琨,张磊,尧军平.Te对Al-7Si-0.3Mg合金组织和力学性能的影响[J].特种铸造及有色合金,2014,34(05):538-540. DOI： 10.15980/j.tzzz.2014.05.019.

Liu Hui, Yang Lin, Luo Kun, et al. Effect of Te on the Microstructure and Mechanical Properties of Al-7Si-0.3Mg Alloys[J]. Special Casting & Nonferrous Alloys, 2014,34(5):538-540. DOI： 10.15980/j.tzzz.2014.05.019.

摘要

采用Te对亚共晶Al-7Si-0.3Mg合金进行了变质处理

考察了加入量、熔体保持时间以及重熔次数对合金组织和力学性能的影响。结果表明

Te对Al-7Si-0.3Mg合金中的共晶Si相具有良好的变质作用。考虑到成本因素

Te的最佳加入量为0.1%左右时

共晶Si绝大部分转化为颗粒状

合金的抗拉强度和伸长率为240.1MPa和4.2%

相比未变质合金分别提高了31.1%和133.3%。熔体保持6h或经重熔3次后

Te变质的效果基本保持不变

表明Te具有良好的抗变质衰退和重熔特性

是一种长效变质剂。

Abstract

Effects of Te addition

holding time and remelting times on the microstructure and mechanical properties of Al-7Si-0.3Mg Alloy with Te modification were investigated.The results show that Te exhibits a satisfied modification effect on Al-7Si-0.3Mg alloy.With 0.1% Te addition

tensile strength and elongation of the alloy with major eutectic Si particles reach 240.1MPa and 4.2%

respectively

increased by 31.1%and 133

respectively

compared with those of un-modified alloy.After the alloy was modified for 6hand remelted by 3times

mechanical properties of the Te modified alloy keep a desirable state

which show Te exhibits satisfied anti-fading ability and anti-remelting behavior as a longduration modifier.