MODIFICATION PERFORMANCE OF THE Cu-P MASTERALLOYONCOMMERCIAL HYPEREUTECTIC Al-24Si-Cu-Mg ALLOY

Authors

  • Basavaraj Ganiger Associate Professor, M. E. Department, Kalpataru Institute of Technology, Tiptur, Karnataka, India. Author
  • T.M.Chandrashekharaiah Professor, M. E. Department, Kalpataru Institute of Technology, Tiptur, Karnataka, India Author
  • T.B.Prasad Professor, M. E. Department, Sri Siddhartha Institute of Technology, Tumkur, Karnataka, India. Author

Keywords:

Hypereutectic Al-Si alloy, Primary silicon, Modification, microstructure, mechanical properties.

Abstract

ABSTRACT In the present study, Cu-14P master alloy has been used to modify a commercial grade Al-24Si-Cu-Mg/ LM-29alloy. The influences of P content on the microstructure and mechanical properties of alloys were investigated. The P addition make the coarse polyhedral primary silicon particles obviously refined and the large needleeutectic silicon modified to the fine fibrous ones. The alloys with the additions of 0.4 %( Cu-14P) has theoptimal microstructure and the highest mechanical properties compared with the unmodified alloy. The primarysilicon of alloys can be refined from 51.88 µm to 21.53 µm. The ultimate tensile strength is improved from174MPa to 211 MPa. The elongation is improved from 0.94% to 1.56%. The hardness is improved from138 VHNto 160 VHN

Downloads

Published

2017-03-31

Issue

Vol. 4 No. 13 (2017): ICAMS- 2017

Section

Articles