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Tool steel selection for cold forming of high strength steels based on the stress distribution in tools
Hernández Rossi, Ricardo; Riera Colom, María Dolores; Casellas Padró, Daniel; Valls, Isaac; Casas Aguirregomezcorta, Begoña; Prado Pozuelo, José Manuel
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
The excellent combination of high mechanical strength, high elongation and strain hardening of Advanced High Strength Steels (AHSS) has allowed their increasing use in the automobile industry to reduce vehicle weight and thereby fuel consumption while improving crash performance. However, the implementation of such high strength materials has generated difficulties related to wear acceleration and premature failure of forming tools. High loading during cold forming of AHSS increases to a great extent the tool requirements in terms of toughness and hardness properties. The main alternative to overcome these difficulties involves an optimized selection tool material through a proper evaluation of the stress state in the tools themselves. In this work, stress states on tooling during cold forming of AHSS have been evaluated by means of finite element simulation. The calculated results allow selecting the most suitable tool steel in terms of microstructure and mechanical properties.
Àrees temàtiques de la UPC::Enginyeria dels materials
Strength of materials
Tool-steel
Resistència de materials
Acer per a eines
Materials Science & Technology 2007 Conference (September 16-20, 2007, Detroit, Michigan) The Materials Science & Technology Conference is organized by a partnership among the American Ceramics Society (ACerS), the Association for Iron & Steel Technology (AIST), ASM International, and The Minerals, Metals & Materials Society (TMS). The copyright is held by these societies and all rights are reserved. Reprint, re-use or redistribution without the express written consent of these societies is strictly prohibited.
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Greyden Press
         

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