Impact mechanical behaviour of Al-7Si-Mg (A357) cast aluminum alloy. The effect of artificial aging

被引：40

作者：

Alexopoulos, Nikolaos D. ^{[1
]}

Stylianos, Antonis ^{[1
]}

机构：

[1] Univ Aegean, Dept Financial Engn, Chios 82100, Greece

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 19-20期

关键词：

Casting; Aluminum alloys; Aging; Charpy impact test; Fracture; Ductility; Impact behaviour; AL-SI-MG; WORK-HARDENING CHARACTERISTICS; FRACTURE-TOUGHNESS; METALLURGICAL FACTORS; DYNAMIC FRACTURE; DAMAGE EVOLUTION; MICROSTRUCTURE; PRECIPITATION; QUALITY; DEFORMATION;

D O I：

10.1016/j.msea.2011.04.086

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of artificial aging on the impact mechanical behaviour of A357 (Al-7Si-0.7Mg) cast aluminum alloy was assessed. Instrumented Charpy impact test was used to record the variations of impact load and energy properties as a function of artificial aging conditions. Studies included under-, peak- and over-aging conditions. Calculated impact dynamic yield strength results were compared with corresponding quasi-static properties finding negligible differences in the peak-aging condition. Correlations were proposed between tensile and impact properties of the cast alloy. Fractographic analyses were used to assess the progressive ductile-to-brittle fracture change with increasing aging. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：6303 / 6312

页数：10

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