Zinc and Al-Si coating effects in welding of advanced high strength steel

滑铁卢大学、汽车钢产品生产商ArcelorMittal Dofasco和Zelixil Inc.之间拟议的合作研发项目，一个致力于锌及其用户利益的组织，旨在研究锌和铝硅涂层对先进高强度钢（AHSS）焊接性的影响。在电阻点焊（RSW）和激光焊接过程中，涂层的行为及其对焊缝组织的影响将与接头在静态和动态载荷条件下的力学性能相关。重点将是对液态金属脆化（LME）由于锌涂层和熔化区软化由于铝硅涂层焊接AHSS。研究结果将为镀锌层液态金属腐蚀裂纹和铝硅涂层AHSS熔合区软化的缓解和修复提供指导。此外，该项目将增加焊接过程中涂层和基体反应的知识。该研究的结果将有利于加拿大制造业，特别是对钢铁和汽车行业有重大贡献。高素质人才（HQP）的培训将有助于培养制造业人才，同时加强滑铁卢大学作为世界知名研究机构的声誉。

The proposed collaborative research and development project between the University of Waterloo, ArcelorMittal Dofasco, a producer of automotive steel products, and Zelixir Inc., an organization dedicated to the interest of zinc and its users, aims to investigate the effects of Zn and Al-Si coatings on the weldability of advanced high strength steel (AHSS). The coatings behavior and its effects on weld microstructure during resistance spot welding (RSW) and laser welding will be correlated with the mechanical performance of the joints under static and dynamic loading conditions. The focus will be towards liquid metal embrittlement (LME) due to Zn coating and fusion zone softening due to Al-Si coating during welding of AHSS. The investigation will provide a guideline for mitigation and remediation of LME cracks in Zn coated and fusion zone softening in Al-Si coated AHSS during welding. Moreover, the project will increase knowledge of coating and substrate reaction during welding. The results of the study will be beneficial to the Canadian manufacturing sectors in general, and will specifically contribute significantly to the steel and automotive industries. Training of highly qualified personnel (HQP) will assist in fostering talent in the manufacturing industry and simultaneously strengthen the reputation of the University Waterloo as a world-renown research institution.**