Influence of characteristic eutectic free microstructure on mechanical and corrosion response of spark plasma sintered hypereutectic Al-Si alloy

被引:8
作者
Saravanan, T. T. [1 ,2 ]
Kamaraj, M. [2 ]
Sharma, S. C. [1 ]
Anoop, S. [1 ]
Manwatkar, Sushant K. [1 ]
Ravikanth, K., V [4 ]
Venugopal, A. [1 ]
Kumaran, S. [3 ]
机构
[1] Vikram Sarabhai Space Ctr, Mat & Met Grp, Thiruvananthapuram 695022, Kerala, India
[2] Indian Inst Technol Madras, Dept Mat Engn, Chennai 600036, Tamil Nadu, India
[3] Natl Inst Technol, Dept Met & Mat Engn, Tiruchirappalli 620015, Tamil Nadu, India
[4] Bhabha Atom Res Ctr, Mat Grp, Mumbai 400085, Maharashtra, India
关键词
Spark plasma sintering; Hypereutectic; Microstructure; Interfaces; Wetting; Corrosion;
D O I
10.1016/j.matlet.2021.131104
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Spark plasma sintered hypereutectic Al-Si alloy, free from characteristic eutectic microstructure was evaluated for its mechanical and corrosion behaviour in comparison with conventional cast microstructure having coarser primary Si and acicular eutectic Si. In SPSed microstructure, Al region free from acicular eutectic imparts substantial failure strain under compression loading. Absence of coarser primary Si and acicular eutectic Si in SPSed microstructure prevents the rate of anodic dissolution, specifically at the Al-Si interface and enhances corrosion resistance than the cast microstructure in 3.5 wt% NaCl corrosive medium.
引用
收藏
页数:4
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