Effects of rheocasting and heat treatment on microstructure and mechanical properties of A356 alloy

被引：35

作者：

Liao BoChao ^{[1
]}

YoungKoo, Park ^{[2
]}

Ding HongSheng ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Natl Key Lab Sci & Technol Precis Heat Proc Metal, Harbin 150006, Peoples R China

[2] Chonbuk Natl Univ, Sch Engn, Dept Met Engn, Chonju, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 03期

关键词：

A356; alloy; Rheocasting; Liquid casting method; T5 heat treatment; Microstructure;

D O I：

10.1016/j.msea.2010.09.059

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of the rheocasting process and T5 heat treatment on microstructure and mechanical properties of A356 alloy were investigated. The results show that the temperature range for the solid-liquid state is roughly between 560 degrees C and 630 degrees C, and the solid fraction increases from 0% to 100% with decreasing temperature. The finer microstructure in rheocasting in comparison with the one in conventional casting was attributed to pressure breaking down the secondary dendrite arms, especially for specimens around 600-610 degrees C. It was proved that rheocasting specimens have improved mechanical properties over the conventional casting ones. Furthermore, the result shows that T5 heat treatment can strengthen A356 alloy, while the plasticity was reduced at the same time. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：986 / 995

页数：10

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