Characterizing and Optimizing Bondline Reactions during Electric Resistance Welding of Advanced High Strength Steels

To improve passenger safety and vehicle fuel economy, automotive companies are increasing their use of both advanced high strength steels (AHSS) and hydroformed tubular construction. However, successful use of new AHSS tubular designs require successful electric resistance welding (ERW) of these grades. The high alloy content of new AHSS leads to bondline decarburization and the formation of non-metallic particles; degrading bondline strength. The proposed project will understand ERW properties using both an industrial and laboratory approach. Optimum welding parameters will be developed to enable use of AHSS in hydroforming applications. This project will i) characterize the kinetics of non-metallic formation; ii) develop a model to predict non-metallics formation; iii) characterize how bondline decarburization forms; and iv) develop robust ERW parameters. The know-how from this project will increase the competitiveness of Canada’s steel industry and enable technologies to further Canada’s greenhouse gas reduction goals.

Faculty Supervisor:

Elliot Biro

Student:

Partner:

ArcelorMittal Dofasco

Discipline:

Engineering

Sector:

Manufacturing

University:

University of Waterloo

Program: