Weld Characteristics and Properties of Laser Wire Filling Welding for Thin-Coated Hot-Formed Steel
Journal Title: Automobile Technology & Material - Year 2024, Vol 39, Issue 1
Abstract
To reduce the adverse effect of aluminum silicon coating layer on the surface of steel plate on laser joint, laser wire filler welding joint with aluminum mass fraction less than 1% in weld was obtained by using thin-coated hot-formed steel material and laser wire filler welding technology. The macro and microstructure of the welded joint were analyzed, it was found that the welded joint was replaced by the whole martensite structure after hot forming,which avoided the softening phenomenon. The mechanical property analysis shows that the tensile strength of the sample increases from about 570 MPa to about 1 500 MPa after hot forming, and the weak link of the joint is located in the base material. High speed tensile has no adverse effect on the tensile strength of the joint, but the elongation at break is affected greatly.
Authors and Affiliations
Jiang Zhigong, Yang Baofeng, Li Tian, Wang Rui, Xu Hong
Keywords
Related Articles
- EP ID EP731927
- DOI 10.19710/J.cnki.1003-8817.20230026
- Views 59
- Downloads 0
Application of One-step Forming in Crash Simulation of Automobile Seat
To guide the design of car seats and save development time, this paper studied the effects of residual stress and plastic deformation generated after sheet metal parts stamping on the crash simulation of car seat based...
Analysis of Application of Dimension Engineering in Automotive Development
To address the issue of perceived quality in the appearance of vehicle gaps, this article mainly described the content and application of dimensional engineering in the entire product development life cycle of automobile...
Research on Anti-Corrosion Development of Inner Cavity for New Energy Control Module
This paper conducted an in- depth study on the internal cavity corrosion of new energy control modules. The paper firstly analyzed the key factors contributing to corrosion in the cooling system cavity of conventional fu...
Research on Assembly Torque Attenuation of Steering Knuckle Cone Ball Stud
In order to eliminate abnormal sound of the knuckle cone ball stud of a passenger car on proving ground test, this paper proposed a new method based on virtual simulation. Firstly, the ball stud contact area variation te...
Optimization of Flanging Cracking of High Strength Steel Longitudinal Beam based on AutoForm
To address the issue of flanging cracking of automotive high- strength steel longitudinal beam, this paper analyzed the mechanical properties of parts and cause of cracking. Using empirical method to modify the die to...