Effects of the thixocasting injection velocity on tensile properties of an A357 Al alloy

被引：1

作者：

Ozer, Melika ^{[1
]}

Akar, Neset ^{[1
]}

Kocatepe, Kadir ^{[1
]}

Erdogan, Mehmet ^{[1
]}

机构：

[1] Gazi Univ, Dept Met & Mat Engn, TR-06500 Ankara, Turkey

来源：

MATERIALS TESTING | 2015年 / 57卷 / 09期

关键词：

Thixocasting; tensile properties; injection velocity; A357 aluminum alloy; THIXOTROPIC MICROSTRUCTURE; ALUMINUM-ALLOYS; COOLING SLOPE; BEHAVIOR;

D O I：

10.3139/120.110768

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, the effects of injection velocity on tensile properties and hardness of A357 aluminum alloy produced by thixocasting process were investigated. For this purpose, feedstock produced by cooling slope process were first held at reheating temperature of 572 degrees C and then formed at injection velocities of 1, 1.5, 2 and 2.37 m x s(-1), respectively. In order to make comparisons, other specimens were produced by high pressure die casting method via melted metal at the casting temperature of 630 degrees C using same injection velocities. Tensile test and hardness measurements were conducted for all specimens. The best tensile test properties were obtained for the specimens produced by thixocasting process at injection velocity of 2.37 m x s(-1). For this specimens, the values of 0.2 % proof strength, tensile strength and total elongation were obtained as 89.9 MPa, 237.3 MPa and 20.7 %, respectively. Furthermore, its hardness were measured as 74 HV.

引用

页码：790 / 794

页数：5

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