Welding of Advanced High Strength Steels for Automotive Applications.

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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 multi-phase microstructure. This course is aimed to discuss the (i) role of alloying elements in stabilizing multi-phase microstructures of AHSS, (ii) effect of weld thermal cycles on the evolution of microstructures and (iii) weldability of AHSS.

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COURSE LAYOUT

Week 1: Introduction to 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 weld thermal cycles on the stability of phases, solidification behaviour, segregation
and hot cracking susceptibility.
Week 4: Mechanical properties of advanced high strength steel weldments – Tensile shear testing, HAZ softening characteristics, role of modified weld
thermal cycles (post pulsing and post weld heat treatments) to improve the mechanical properties.

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    Welding of Advanced High Strength Steels for Automotive Applications.
    Welding of Advanced High Strength Steels for Automotive Applications.

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