Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (11): 71-76,85.doi: 10.3969/j.issn.1000-565X.2017.11.010

• Materials Science & Technology • Previous Articles     Next Articles

Melt Fluidity and Solidification Characteristics of Al-Mn Alloy

LI Wen-fang1,2 QI Peng-fei1 DU Jun1 WANG Kang2 YANG Lu1 LUO Ping-jun1   

  1. 1.School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.School of Mechanical Engineering,Dongguan University of Technology,Dongguan 523000,Guangdong,china
  • Received:2017-03-20 Revised:2017-05-22 Online:2017-11-25 Published:2017-10-01
  • Contact: 李文芳(1964-)，男，教授，博士生导师，主要从事金属基复合材料及其腐蚀与防护研究． E-mail:mewfli@163.com
  • About author:李文芳(1964-)，男，教授，博士生导师，主要从事金属基复合材料及其腐蚀与防护研究．
  • Supported by:
    Supported by the Production and Research Cooperation of Frontier Technology Special Funds Research Projects of Guangdong Province(2013B090500091)

PDF

441

Abstract: In the investigation,the fluidity of the Al-Mn alloy of different Mn contents is tested by a spiral perma- nent mould.Then,the solidification characteristic of the alloy is measured through the computer-aided cooling curve thermal analysis so as to reveal the inherent mechanism of the fluidity change.The results show that,when the Mn dosage increases from 0. 6% (mass fraction) to 2. 7%,the fluidity of the Al-Mn alloy tends to increase first and then decrease,and that the Al-Mn alloy is of the best fluidity when the Mn dosage is 2. 0% and the fluidity length reaches up to 88. 5% of commercial ADC12 alloy.Thermal analysis results show that there exist some laws in the changes of both the alloy solidification range and the difference between the pouring temperature and the den- drite coherency temperature with the Mn dosage,and the corresponding trend accords well with the change trend of the fluidity length.

Key words: Al-Mn alloy, fluidity, melt thermal analysis

CLC Number: