Study on laser remelting and cladding of titanium alloy

摘要

The present paper is foucsed on the study of laser remelting and cladding of titanium alloy.These experiments use TC4 alloy as substrates and by YAG and CO_2 laser.The investigations show that in the shielding of argon gas,the structue of remelting zone by CO_2 lasr is made of three layers,while by YAG laser is made of two.It is hard to eliminate throughly crack in CoCrW coating produced by YAG laser,while the coating produced by CO_2 laser have no crack,no hole and the hardness is HV 580,but the dilution ratio is big.