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Aluminum tailored heat treated blanks

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Abstract

Tailored Heat Treated Blanks (THTB) are blanks, which exhibit locally different material properties optimized for the succeeding sheet metal forming process. The distribution of the material properties is obtained by a local, short-term heat treatment. As a result of the optimized property gradients in the sheet metal’s plain, THTB allow enhancing the forming limits significantly. The research work covered in this paper focuses on THTB made out of aluminum alloys. The article presents the microstructural mechanisms due to a short-term heat treatment as well as design principles for the heat treatment layout for THTB made out of AlMgSi alloys and ultra-fine grained (UFG) aluminum alloys produced by the Accumulative Roll Bonding process.

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Acknowledgments

This work was elaborated in the Transfer Project T-B4 (SFB 396) and in the German Cluster of Excellence Engineering of Advanced Materials, which are funded by the German Research Foundation (DFG). The authors thank the DFG for the financial support.

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Correspondence to Manfred Geiger.

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Geiger, M., Merklein, M. & Vogt, U. Aluminum tailored heat treated blanks. Prod. Eng. Res. Devel. 3, 401 (2009). https://doi.org/10.1007/s11740-009-0179-8

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  • DOI: https://doi.org/10.1007/s11740-009-0179-8

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