Analysis of properties laser welded RAK 40/70 steel sheets

27th Joint Seminar Development of Materials Science in Research and Education

材料科学;教育

Evin, E.^1 ; Tomá, M.^1 ; Fujda, M.^2

TU Koice, Faculty of Mechanical Engineering, Mäsiarska 74, Koice, Slovakia^1

TU Koice, Faculty of Materials, Metallurgy and Recycling, Letná 9, Koice, Slovakia^2

关键词: Analysis of properties;    Ecological production;    Innovative technology;    Microstructure analysis;    Multiphase TRIP steels;    Specific properties;    Strength and deformation properties;    Three-point bending test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/266/1/012003/pdf
DOI  :  10.1088/1757-899X/266/1/012003

来源: IOP

【 摘 要 】

Both, the ecological production and operation of vehicles demand using such materials for deformation zones' structural parts, which show some specific properties and use innovative technologies to process them. Specific requirements for functionality (strength, stiffness, deformation work, fatigue properties) are closely linked to processability (formability). In the paper are presented results for multiphase TRIP steel RAK40/70 when welded by pulse solid-state fiber laser YLS-5000. Based on microstructure analysis in the fusion zone and heat affected zone the welding parameters were optimised. The influence of laser welding on the strength and deformation properties was verified by characteristics of strength, stiffness and deformation work, as they were calculated from mechanical properties measured by tensile test and three-point bending test. The knowledge gathered in the field of laser welding influence on the strength and deformation properties of multiphase TRIP steel RAK40/70 should help designers when design the lightweight structural parts of the car body.