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Tulke, Marc
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Publications (9/9 displayed)
- 2023Forming of aluminium alloys with macro-structured tools at cryogenic temperaturecitations
- 2023Contact conditions and temperature distribution during cryogenic deep drawing with macro-structured toolscitations
- 2022Influence of Macro-Structured Tools on the Formability of Aluminum Alloys in the Cryogenic Temperature Rangecitations
- 2022Deep drawing of DC06 at high strain ratescitations
- 2022Local Temperature Development in the Fracture Zone during Uniaxial Tensile Testing at High Strain Rate: Experimental and Numerical Investigationscitations
- 2021Cryogenic deep drawing of aluminum alloy AA6014 using macro-structured toolscitations
- 2021Data based model predictive control for ring rollingcitations
- 2020Determination of Material and Failure Characteristics for High-Speed Forming via High-Speed Testing and Inverse Numerical Simulationcitations
- 2019Non-linear Model-predictive-control for Thermomechanical Ring Rolling
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article
Influence of Macro-Structured Tools on the Formability of Aluminum Alloys in the Cryogenic Temperature Range
Abstract
<p>Aluminum materials are popular materials for research in terms of lightweight construction. How cryogenic forming can be used to increase material utilization in terms of resource efficiency is one of the areas being investigated. Subject of this study are numerical and experimental investigations regarding the formability of the aluminum alloy AA6014-T4 with macro-structured deep drawing tools at cryogenic temperatures. The macro-structure of the deep drawing dies significantly reduces the heat flux between the dies and the blank due to the reduced contact area. For this reason, active cooling or heating of the dies is not required. The process of heat conduction between the tool and the blank, as well as the deep drawing process, is calculated using the FE-method and compared with the experimental investigations. In addition, the induced residual stresses are determined using the hole-drilling method and compared with the computational solution. The presented examination shows an improved deep drawing ratio of the aluminum alloy AA6014-T4 at cryogenic blank temperature without active tool cooling. Additionally, the influence of the blank temperature on the forming regarding the residual stresses in the cups is analyzed and discussed.</p>