Composite Refining Process of Al-7Si-Mg Alloy

Liu Huan; Tang Jinglin

doi:10.15980/j.tzzz.2013.03.031

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Composite Refining Process of Al-7Si-Mg Alloy
Vol. 33, Issue 3, Pages: 282-284(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.03.031

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[1]刘欢,唐靖林.Al-7Si-Mg合金晶粒的复合细化处理的研究[J].特种铸造及有色合金,2013,33(03):282-284.

Liu Huan, Tang Jinglin. Composite Refining Process of Al-7Si-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 33(3):282-284(2013)
[1]刘欢,唐靖林.Al-7Si-Mg合金晶粒的复合细化处理的研究[J].特种铸造及有色合金,2013,33(03):282-284. DOI： 10.15980/j.tzzz.2013.03.031.

Liu Huan, Tang Jinglin. Composite Refining Process of Al-7Si-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 33(3):282-284(2013) DOI： 10.15980/j.tzzz.2013.03.031.

摘要

采用自制的Al-TiC细化剂以及Al-5Ti-B中间合金对Al-7Si-Mg合金进行复合细化处理

研究了复合细化处理工艺对Al-7Si-Mg合金晶粒尺寸和力学性能的影响。结果表明

在复合细化处理后

Al-7Si-Mg合金晶粒尺寸为采用2%的Al-5Ti-B细化处理的66.5%。力学性能测试表明

与采用2%的Al-5Ti-B细化处理相比

复合细化处理使Al-7Si-Mg合金的抗拉强度在T6处理前后分别提高了13.88%和4.96%

伸长率在T6处理前后分别提高了52.3%和89.3%。

Abstract

The compound refining treatment of self-developed Al-TiC grain refiner and Al-5Ti-B master alloy on the Al-7Si-Mg alloy was performed to investigate the effects of composite refining process on the grain size and mechanical properties of Al-7Si-Mg.The results show that the grain size of Al-7Si-Mg alloy refined by composite refining process is 66.5% of that refined by 2% Al-5Ti-B.Compared with those of Al-7Si-Mg alloy refined by 2% Al-5Ti-B

the tensile strength of the Al-7Si-Mg alloy refined by composite refining process is increased by 13.88% and 4.96%

and the elongation is increased by 52.3% and 89.3%

respectively

before and after T6 treatment.