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The 6xxx-series aluminum alloysAluminum alloy are used for automotiveAutomotive production due to their high specific strength and ability to be manufactured into complex shapes via extrusionExtrusion or stamping. Small additions of Cr and Mn are dispersoidDispersoids formers added to improve recrystallizationRecrystallization resistance and decrease peripheral coarse grain growth during extrusionExtrusion. Replacing Cr and Mn with Sc and Zr maintains the recrystallizationRecrystallization resistance while decreasing peripheral coarse grain volume, which increases the yield strength and ultimate tensile strengthTensile strength while maintaining ductility in a peak-aged extrusionExtrusion.

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The Effect of Sc and Zr Dispersoids on the Final Properties of a 6xxx Series Extrusion Alloy

  • 会议论文

  • 发表日期：

    2025年

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  • Eli Harma,
  • Paul Sanders

摘要

The 6xxx-series aluminum alloysAluminum alloy are used for automotiveAutomotive production due to their high specific strength and ability to be manufactured into complex shapes via extrusionExtrusion or stamping. Small additions of Cr and Mn are dispersoidDispersoids formers added to improve recrystallizationRecrystallization resistance and decrease peripheral coarse grain growth during extrusionExtrusion. Replacing Cr and Mn with Sc and Zr maintains the recrystallizationRecrystallization resistance while decreasing peripheral coarse grain volume, which increases the yield strength and ultimate tensile strengthTensile strength while maintaining ductility in a peak-aged extrusionExtrusion.