Effects of Heat Treatment Parameters on Microstructure and Properties of Extruded Semi-solid AlSi7MgBe Alloy Parts

Zhao Dazhi1; Lu Guimin1; Zhang Yu2; Cui Jianzhong1

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Effects of Heat Treatment Parameters on Microstructure and Properties of Extruded Semi-solid AlSi7MgBe Alloy Parts
Issue 12, Pages: 933-935(2007)
Published： 2007 ，
DOI：

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[1]赵大志,路贵民,张宇,崔建忠.AlSi7MgBe合金半固态挤压成形件的热处理工艺[J].特种铸造及有色合金,2007(12):933-935+899.

Zhao Dazhi1, Lu Guimin1, Zhang Yu2, et al. Effects of Heat Treatment Parameters on Microstructure and Properties of Extruded Semi-solid AlSi7MgBe Alloy Parts. [J]. Special Casting & Nonferrous Alloys (12):933-935(2007)
[1]赵大志,路贵民,张宇,崔建忠.AlSi7MgBe合金半固态挤压成形件的热处理工艺[J].特种铸造及有色合金,2007(12):933-935+899. DOI：

Zhao Dazhi1, Lu Guimin1, Zhang Yu2, et al. Effects of Heat Treatment Parameters on Microstructure and Properties of Extruded Semi-solid AlSi7MgBe Alloy Parts. [J]. Special Casting & Nonferrous Alloys (12):933-935(2007) DOI：

摘要

采用正交设计方法

研究了固溶时效工艺参数对AlSi7MgBe合金半固态挤压成形件热处理性能的影响

通过对抗拉强度的测试

对热处理工艺进行了优化

结果表明:当545℃固溶4h

175℃时效11h

成形件具有最优力学性能σb=318MPa

δ5=15.24%

此时析出相弥散地分布在基体上。

Abstract

Effects of solid solution and aging parameters on properties of semi-solid AlSi7MgBe alloy parts have been examined by orthogonal testing.The processing parameters were optimized based on the measurement of tensile strength.The results show that the parts with desirable mechanical properties including tensile strength of 318 MPa and elongation of 15.24% can be produced with solid solution at 545 ℃ for 4 h and aging at 175 ℃ for 11 h

and the precipitates are dispersively distributed in the matrix.