Home Kovove Materialy-Metallic Materials 2016 Metallic Materials Vol. 54 (2016), no. 6, pp.407-416

Journal info

Select Journal







Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 54 (2016), no. 6, pp.407-416

Title: Microstructure of fibre laser welded joint of dual phase steel with bake hardening steel
Author: P. SVEC, A. SCHREK, M. DOMÁNKOVÁ

Abstract: The fibre laser welding of dual phase DP600 steel and bake hardening BH220 steel were studied with a concentration on the microstructure of butt joints, but microhardness and tensile properties were also measured. The temperature peaks influenced the microstructure of the fusion zone and heat affected zone. The microstructure in the fusion zone was predominantly built of acicular ferrite with small areas of upper and lower bainite, and martensite. The similar microstructure was observed in the heat affected zone near DP600 steel. The microstructure in the heat affected zone near BH220 steel consisted mostly of coarse ferrite and acicular ferrite. The microhardness increased in the fusion zone and in the
heat affected zone near DP600 steel, which was the consequence of martensite and bainite formation in these areas. The tensile strength of the fibre laser welded joints exceeded the strength of the BH220 steel base material with failure occurring in this steel.


Keywords: dual phase steel, bake hardening steel, fibre laser welding, microstructure, microhardness
Published online: 08-Dec-2016
Year: 2016, Volume: 64, Issue: 6 Page From: 407, Page To: 416
doi:10.4149/km_2016_6_407


download file



© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.