Development of High Strength and Toughness Non-Heated Al-Mg-Si Alloys for High-Pressure Die-Casting

被引：21

作者：

Yuan, Ling-Yang ^{[1
,2
]}

Han, Pan-Wen ^{[1
,2
]}

Asghar, Ghulam ^{[1
,2
]}

Liu, Bao-Liang ^{[3
]}

Li, Jin-Ping ^{[4
]}

Hu, Bin ^{[4
]}

Fu, Peng-Huai ^{[1
,2
,3
]}

Peng, Li-Ming ^{[1
,2
,3
]}

机构：

[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Key State Lab Met Matrix Composites, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[3] Shanghai Light Alloy Net Forming Natl Engn Res Ct, Shanghai 201615, Peoples R China

[4] Gen Motors China Sci Lab, Shanghai 201206, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2021年 / 34卷 / 06期

关键词：

Al– Mg– Si– Ti alloy; Microstructure; Tensile properties; High strength and toughness; Contour maps; TENSILE PROPERTIES; ALUMINUM-ALLOY; LIGHTWEIGHT MATERIALS; MECHANICAL-PROPERTIES; MICROSTRUCTURE; MN; PROPERTY;

D O I：

10.1007/s40195-020-01174-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Based on the 3 factors and 3 levels orthogonal experiment method, compositional effects of Mg, Si, and Ti addition on the microstructures, tensile properties, and fracture behaviors of the high-pressure die-casting Al-xMg-ySi-zTi alloys have been investigated. The analysis of variance shows that both Mg and Si apparently influence the tensile properties of the alloys, while Ti does not. The tensile mechanical properties are comprehensively influenced by the amount of eutectic phase (alpha-Al + Mg2Si), the average grain size, and the content of Mg dissolved into alpha-Al matrix. The optimized alloy is Al-7.49 Mg-3.08Si-0.01Ti (wt%), which exhibits tensile yield strength of 219 MPa, ultimate tensile strength of 401 MPa, and elongation of 10.5%. Furthermore, contour maps, showing the relationship among compositions, microstructure characteristics, and the tensile properties are constructed, which provide guidelines for developing high strength and toughness Al-Mg-Si-Ti alloys for high-pressure die-casting.

引用

页码：845 / 860

页数：16