Welding of Advanced High Strength Steels for Automotive Applications
Welding of Advanced High Strength Steels for Automotive Applications.
The use of advanced high strength steels (AHSS) is increasingly preferred in automotive applications due to improved crash energy management and enhanced strength-ductility combinations, resulting in greener and safer vehicles. The weldability of AHSS is generally poorer than conventional steels due to the high alloying contents required to obtain a multi-phase microstructure. This course is aimed to discuss the (i) role of alloying elements in stabilizing multi-phase microstructures of AHSS, (ii) the effect of weld thermal cycles on the evolution of microstructures, and (iii) weldability of AHSS.
INTENDED AUDIENCE: Final year bachelor’s and master’s students in Metallurgy, Mechanical, Automobile, and Production Engineering. Industrial personnel working in automotive and steel-making industries.
What Will I Learn?
- Week 1: Introduction to the physical metallurgy of advanced high strength steels
- Week 2: Introduction to welding processes in automotive industries (Advanced Gas Metal Arc, Resistance Spot, and Laser Welding Processes).
- Week 3: Welding metallurgy of advanced high strength steels – Effect of welding thermal cycles on the stability of phases, solidification behavior, segregation
- and hot cracking susceptibility.
- Week 4: Mechanical properties of advanced high strength steel weldments – Tensile shear testing, HAZ softening characteristics, the role of modified weld
- thermal cycles (post pulsing and post-weld heat treatments) to improve the mechanical properties
Topics for this course