Heat Treatment of Semi-solid Forming Hypereutectic Al-Si Alloy

Fan Xiang; Yang Yitao

doi:10.15980/j.tzzz.2013.05.013

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Heat Treatment of Semi-solid Forming Hypereutectic Al-Si Alloy
Vol. 33, Issue 5, Pages: 416-420(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.05.013

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[1]范湘,杨弋涛.半固态成形过共晶Al-Si合金热处理工艺研究[J].特种铸造及有色合金,2013,33(05):416-420.

Fan Xiang, Yang Yitao. Heat Treatment of Semi-solid Forming Hypereutectic Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 33(5):416-420(2013)
[1]范湘,杨弋涛.半固态成形过共晶Al-Si合金热处理工艺研究[J].特种铸造及有色合金,2013,33(05):416-420. DOI： 10.15980/j.tzzz.2013.05.013.

Fan Xiang, Yang Yitao. Heat Treatment of Semi-solid Forming Hypereutectic Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 33(5):416-420(2013) DOI： 10.15980/j.tzzz.2013.05.013.

摘要

研究了半固态成形过共晶Al-Si合金的热处理工艺。利用Thermo-Calc热力学相图计算软件

对过共晶Al-Si合金相成分进行相图计算

得到理论的固、液相线

以此来指导热处理工艺。试验选取了480、500、520、540℃4种固溶温度和160、180、200℃3种时效温度

共12种工艺

最后得到的最佳的热处理工艺

即:500℃×2h固溶+180℃×8h时效。

Abstract

Effects of heat treatment on a new semi-solid forming hypereutectic Al-Si alloy were investigated.The theoretical solidus-liquidus phase of the alloy was presented through the Thermo-Calc software calculating the diagram of the alloy to guide the heat treatment process.The twelve processes were provided including four solution temperatures（480

500

520

540 ℃）and three aging temperatures（160

180

200）.Finally

a optimized heat treatment process was presented as follows:solid solution at 500 ℃ for two hours and then aging at 180 ℃ for eight hours.