Numerical investigation on the molten pool and keyhole dynamic behaviors and weld microstructure in laser-induction hybrid welding of stainless steel

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Heat and Mass Transfer Pub Date : 2025-03-29 DOI:10.1016/j.ijheatmasstransfer.2025.126988

Yuewei Ai , Yang Zhang , Shibo Han , Xin Liu

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引用次数: 0

Abstract

The laser-induction hybrid welding (LIHW) can inhibit the formation of welding defects and enhance the mechanical properties of welded joints, which improves the applicability of laser welding in different industries. In this paper, a macro-micro numerical model consisting of macroscopic heat transfer and fluid flow model coupled with magnetic field, transient solidification conditions (SCs) model and microscopic phase field model (PFM) is developed to investigate the LIHW of 304 stainless steel. The validity of the developed model is confirmed by comparing the simulation results with the experimental results. The effects of electromagnetic induction heating on the molten pool and keyhole dynamic behaviors and weld microstructure during LIHW are analyzed and discussed in detail. Compared with the single-laser welding (SLW), the depth and half width of the molten pool are increased and the stability of the keyhole has been improved during LIHW. Additionally, the primary dendrite arm spacing during SLW is smaller than that during LIHW. The results show that the proposed model is beneficial for understanding the molten pool and keyhole dynamic behaviors and microstructure evolution process during LIHW and hence improving the welding quality.

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来源期刊

International Journal of Heat and Mass Transfer 工程技术-工程：机械

CiteScore

10.30

自引率

13.50%

发文量

1319

审稿时长

41 days

期刊介绍： International Journal of Heat and Mass Transfer is the vehicle for the exchange of basic ideas in heat and mass transfer between research workers and engineers throughout the world. It focuses on both analytical and experimental research, with an emphasis on contributions which increase the basic understanding of transfer processes and their application to engineering problems. Topics include: -New methods of measuring and/or correlating transport-property data -Energy engineering -Environmental applications of heat and/or mass transfer