Changes in microstructure and mechanical properties of cast Al-Si alloy due to hot rolling

被引：2

作者：

Toyama K. ^{[1
,2
]}

Matsuura K. ^{[1
]}

Ohno M. ^{[1
]}

Sato T. ^{[3
]}

Nakayama M. ^{[3
]}

机构：

[1] Graduate School of Engineering, Hokkaido University, Kita-ku, Sapporo-shi, Hokkaido 001-0019

[2] Engineering Sect. No2, Engineering Division, Toyota Motor Hokkaido Inc., Tomakomai-shi, Hokkaido

来源：

Keikinzoku/Journal of Japan Institute of Light Metals | 2010年 / 60卷 / 01期

关键词：

Al-Si cast alloy; Hot rolling; Shrinkage cavity; Tensile test;

D O I：

10.2464/jilm.60.7

中图分类号：

学科分类号：

摘要：

Effects of hot rolling on microstructure and mechanical properties of a cast Al-Si alloy have been investigated. The hot rolling was carried out at 330°C with rolling reductions ranging from 0 to 80%. With increase in the rolling reduction, the shrinkage cavity decreases in size and volume fraction, and also the eutectic Si particles decreased in size and distance between the particles. In the hot rolled samples, the Al matrix phase consisted of recrystallized grains of which size is comparable to the distance between the eutectic Si particles. Ultimate tensile strength of hot rolled sample increased nearly 33% compared to the one without hot rolling. Elongation of hot rolled sample was about 4.5 times higher than the one without hot rolling.

引用

页码：7 / 11

页数：4