Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Development of 980MPa Grade Galvannealed Advance High Strength Steel Sheets for Automobile

  • Received : 2009.08.03
  • Accepted : 2011.04.25
  • Published : 2011.04.01
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Abstract

Main issues in the automotive industry are the reduction of vehicle body weight for energy savings and improvement of crashworthiness for passenger safety. In order to address both these issues, there has recently been increasing application of galvannealed advance high strength steel (GA AHSS) sheets for automobiles. However, GA AHSS sheets have some surface defects such as coating bare spots due to the addition of solid-solution strengthening elements, which result in the deterioration of the galvannealing reaction. In this study, the effects of galvannealed manufacturing conditions on surface and mechanical properties, resistance spot weldability on a laboratory scale, and GA 980 MPa steel sheets produced by commercial continuous galvannealing line (CGL) were investigated.

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References

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