Effects of Shot Process and Aging on Microstructure and Mechanical Properties of Die-Cast Al-5Mg-2Si-Mn Alloy

Wan Li; Wu Han; Hu Zuqi; Liu Xueqiang; Wu Shusen

doi:10.15980/j.tzzz.2013.03.024

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Effects of Shot Process and Aging on Microstructure and Mechanical Properties of Die-Cast Al-5Mg-2Si-Mn Alloy
Vol. 33, Issue 3, Pages: 249-253(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.03.024

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[1]万里,吴晗,胡祖麒,刘学强,吴树森.压射工艺及时效对Al-5Mg-2Si-Mn合金组织及性能的影响[J].特种铸造及有色合金,2013,33(03):249-253.

Wan Li, Wu Han, Hu Zuqi, et al. Effects of Shot Process and Aging on Microstructure and Mechanical Properties of Die-Cast Al-5Mg-2Si-Mn Alloy. [J]. Special Casting & Nonferrous Alloys 33(3):249-253(2013)
[1]万里,吴晗,胡祖麒,刘学强,吴树森.压射工艺及时效对Al-5Mg-2Si-Mn合金组织及性能的影响[J].特种铸造及有色合金,2013,33(03):249-253. DOI： 10.15980/j.tzzz.2013.03.024.

Wan Li, Wu Han, Hu Zuqi, et al. Effects of Shot Process and Aging on Microstructure and Mechanical Properties of Die-Cast Al-5Mg-2Si-Mn Alloy. [J]. Special Casting & Nonferrous Alloys 33(3):249-253(2013) DOI： 10.15980/j.tzzz.2013.03.024.

摘要

通过高强韧压铸铝镁合金的压铸工艺试验

研究了主要压射工艺参数和人工时效对该合金标准压铸试样的组织及力学性能的影响。结果表明

在压射比压、快压射速度、快压射转换位置分别为100MPa、高速档和220mm时

压铸试样的外观成形良好

组织致密

无缩孔、气孔缺陷

其抗拉强度、屈服强度和伸长率分别为351.1MPa、200.7MPa和13.77%;该试样经人工时效（250℃）保温3h后空冷

其抗拉强度、屈服强度和伸长率分别为380.5MPa、246.9MPa和11.48%。

Abstract

The effects of shot parameters and artificial aging treatment on the microstructure and mechanical properties of the die-casting Al-5Mg-2Si-Mn alloy were investigated.The results show that the die casting samples exhibits good surface with sound microstructure and absence of shrinkage and gas porosity under the condition of shot pressure 100 MPa

high-speed injection velocity and the shrift position of 220 mm.The tensile strength

yield strength and elongation can reach up to 351.1 MPa

200.7 MPa and 13.77% respectively.After artificial ageing treatment at 250 ℃ for 3 hours and then cooled in air

tensile strength

yield strength and elongation of the samples can reach 380.5 MPa

246.9 MPa and 11.48% respectively.