Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (5): 1014-1018.

• Research paper • Previous Articles     Next Articles

EFFECT OF OVERLAPPING TREATMENT ON MICROSTRUCTURE OF LASER CLAD WC/Ni60A COMPOSITE COATING

C.Z. Chen 1,2) , X.D. Liu 3) , S.J. Zhang 4) , D.W. Cui 1) , T.Q. Lei 2) and J.H. Yu 1) 1) College of Material Science and Technology, Shandong University of Technology, Jinan 250061, China 2) College of Material Science and Technology, Harbin Institute of Technology, Harbin 150001, China 3) Jinan Qingqi Group, Jinan 250014, China 4) Department of Machinery and Electronics, Jinan Machinery Workers University, Jinan 250011, China   

  • Received:1999-10-25 Revised:1999-10-25 Online:1999-10-25 Published:2009-10-10

Abstract: The effect of overlapping treatment on microstructure of laser clad WC/Ni60A composite coating was studied with XRD, SEM, TEM and SAED etc. The results show that during the overlapping treatment the existence of the residual heat and edge angle effect on the substrate has changed the composition and microstructure of the coating by raising the fusion temperature and increasing the dilution degree of the coating.

Key words: laser cladding, WC/Ni60A, microstructure, overlapping, edge angle effect