J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (S1): 115-118.

• Research Articles • Previous Articles     Next Articles

Laser surface strengthening process of Al-Si base alloy

Haoran GENG, Yuchao NIU, Xianfa TIAN, Chuanzhong CHEN, Xiaoxia HOU   

  1. Key Lab. of Liquid Structure and Heredity of Materials of Ministry of Education, Ministry of Education, Shandong University, Jinan 250061, China
  • Received:2000-07-02 Revised:2000-09-14 Online:2001-10-28 Published:2009-10-10
  • Contact: Haoran GENG

Abstract: With a laser beam, the surface remelting/resolidifying treatment of ZL108 alloy was studied. Test results showed that a compact remelting layer was obtained with appropriate laser processing conditions and a suitable surface coating for laser energy absorption. The eutectic silicon phase in the laser-treating zone changed from the shape of thick-plate (stripe) into the very small grains, the structure was extremely fined, the hardness and wear resistance were improved greatly compared with that of the base alloy. A laser -treating layer, which is 3.5 mm thick and 5 mm wide, could be obtained.

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