Effects of Cooling Rate on the Microstructure and Tensile Strength of A356 Alloy Wheels

被引：0

作者：

Liu, Zhenbang ^{[1
]}

Zhou, Li ^{[1
]}

Li, Guowei ^{[2
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] SMX Dicastal Wheel Mfg Co, Sanmenxia 472000, Henan, Peoples R China

来源：

PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON MATERIAL, MECHANICAL AND MANUFACTURING ENGINEERING | 2015年 / 27卷

关键词：

Aluminum alloys; Cooling rate; Microstructure; Tensile strength; MECHANICAL-PROPERTIES; CASTING ALLOYS; SI; BEHAVIOR; SOLIDIFICATION; MN;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the effects of cooling rate on the microstructure and tensile strength of A356 wheels during solidification were studied. Four cooling methods, including air cooling, wind cooling and two different water coolings, were a used to control the cooling rate of spoke. Comparing with the air cooling and wind cooling, at higher water cooling rates, the iron phase appeared from the peritectic-type reaction, which transformed from the previous beta-Al5FeSi phase to pi-Al8Mg3FeSi6 phase. Besides, as cooling rate increased from 0.69 degrees C/s to 1.95 degrees C/s, the secondary dendritic arm spacing (SDAS) declined from 44.41 mu m to 31.86 mu m. The UTS and YS could reach 225.27Mpa and 143.02Mpa in the water cooling with the minimum water flow velocity (16L/h), respectively.

引用

页码：2103 / 2109

页数：7

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