Study on microstructure of laser cladding Co-base alloy on nuclear valve parts

Zhang Chunliang. Study on microstructure of laser cladding Co-base alloy on nuclear valve parts[J]. LASER TECHNOLOGY, 2001, 25(2): 129-133.

Citation:

Zhang Chunliang. Study on microstructure of laser cladding Co-base alloy on nuclear valve parts[J]. LASER TECHNOLOGY, 2001, 25(2): 129-133.

Citation:

Zhang Chunliang. Study on microstructure of laser cladding Co-base alloy on nuclear valve parts[J]. LASER TECHNOLOGY, 2001, 25(2): 129-133.

Abstract

Laser cladding of Co-base alloy on the nuclear valve-sealing surface has been performed with a 5kW CO2 flow transverse laser.Optical microscope,SEM,and EDAX have been used to analyze the microstructure,the grain size,the micro-hardness,and the dilution rate.The results show that the microstructure,the grain size,the dilution rate,the width of heat-effect area,and the micro-hardness of the laser cladding coating are much better than those of the spurt welding and the bead welding processing.