Beam-based strategies for the production of property optimized Tailor Heat Treated Blanks
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Researcher
Funding period:
Start: 1. January 2019
Ende: 31. December 2020
Abstract
The use of Tailor Heat Treated Blanks (THTB) enables the forming of high-strength aluminum components at room temperature. A local adaptation of the material properties is possible by local short-term heat treatment performed by laser heating. As a result, the local forming behavior of the components can be adapted to satisfy specific forming requirements.
The aim of this research project is the identification and qualification of heat treatment strategies for the distortion-free heat treatment of precipitation-hardenable aluminum alloys of the 7000-series in the THTB process. Essential preconditions for reproducible forming of components are undistorted sheets. For this purpose, temperature-dependent material properties are first determined and then transferred into a thermo-mechanically FE model. Based on the experimental and numerical results, a demonstrator component is thermally treated by using locally adapted heat treatment layouts and then produced by forming.
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