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

DOI

10.2991/ic3me-15.2015.404How to use a DOI?

Keywords

Aluminum alloys; Cooling rate; Microstructure; Tensile strength

Abstract

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 -Al5FeSi phase to -Al8Mg3FeSi6 phase. Besides, as cooling rate increased from 0.69 °C/s to 1.95 °C/s, the secondary dendritic arm spacing (SDAS) declined from 44.41 m to 31.86 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.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhenbang Liu
AU  - Li Zhou
AU  - Guowei Li
PY  - 2015/08
DA  - 2015/08
TI  - Effects of Cooling Rate on the Microstructure and Tensile Strength of A356 Alloy Wheels
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 2103
EP  - 2109
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.404
DO  - 10.2991/ic3me-15.2015.404
ID  - Liu2015/08
ER  -