Laser modification of high-strength steels

Dariusz Mierzwinski; Boguslaw Major

doi:10.1117/12.287833

3 October 1997 Laser modification of high-strength steels

Dariusz Mierzwinski, Boguslaw Major

Proceedings Volume 3187, Laser Technology V: Applications in Materials Sciences and Engineering; (1997) https://doi.org/10.1117/12.287833
Event: Laser Technology V, 1996, Szczecin, Poland

Abstract

Constructional steels of A441, 4340 and 15B28H AISI types were laser remelted and laser alloyed using VC or CrB. The applied laser remelting rised already the Rockwell hardness to 50 - 60 HRC when the laser alloying by means of VC or CrB to about 75 HRC. The maximum of hardness was usually located in the center of the laser alloyed tracks. A strong microstructure refinement was observed in all cases of modification. Rising of the austenite amount was stated in the examined steels subjected to the VC or CrB laser alloying. The VC and M₃C phases were established by the VC laser alloying when the M₃(C,B) and M₂B phase were identified by application of CrB laser alloying for lower and higher concentrations of alloying additions, respectively. The residual stresses of tension type were stated in the center of the laser remelted tracks and the level of which was diminished by laser alloying.

Citation Download Citation

Dariusz Mierzwinski and Boguslaw Major "Laser modification of high-strength steels", Proc. SPIE 3187, Laser Technology V: Applications in Materials Sciences and Engineering, (3 October 1997); https://doi.org/10.1117/12.287833

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