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Effects of Manufacturing Processes and In-Service mperature Variations on the Properties of TRIP Steels
Technical Paper
2007-01-0793
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper examines some key aspects of the manufacturing process that “ Transformation Induced Plasticity” (TRIP) steels would be exposed to, and systematically evaluate how the forming and thermal histories affect final strength and ductility of the material. We evaluate the effects of in-service temperature variations, such as under hood and hot/cold cyclic conditions, to determine whether these conditions influence final strength, ductility and energy absorption characteristics of several available TRIP steel grades. As part of the manufacturing thermal environment evaluations, stamping process thermal histories are included in the studies. As part of the in-service conditions, different pre-straining levels are included. Materials from four steel suppliers are examined. The thermal/straining history versus material property relationship is established over a full range of expected thermal histories and selected loading modes. Establishing these relationships will allow OEM designers to select TRIP steels for proper vehicle applications, and to specify manufacturing process conditions that yield reliable final material property levels.
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Authors
Topic
Citation
Sun, X., Stephens, E., and Khaleel, M., "Effects of Manufacturing Processes and In-Service mperature Variations on the Properties of TRIP Steels," SAE Technical Paper 2007-01-0793, 2007, https://doi.org/10.4271/2007-01-0793.Also In
Steel Innovations, Fatigue Research, Sheet/Hydro/Gas Forming Technology & Advanced High Strength Steel Development
Number: SP-2103; Published: 2007-04-16
Number: SP-2103; Published: 2007-04-16
References
- Rathbun RW Matlock DK Speer JG 2003 “ Fatigue Behavior of Spot Welded High-Strength Sheet Steels ” Welding Journal 82 8 207s 218s
- Berbenni S. Favier V. Lemoine X. Berveiller M. 2004 “ Micromechanical Modeling of the Elastic-Viscoplastic Behavior of Polycrystalline Steels having Different Microstructures” 2004 Materials Science and Engineering A 372 128 136
- Stringfellow R.G. Parks D.M. Olson G.B 1992 “ A Constitutive Model for Transformation Plasticity Accompanying Strain-Induced Martensitic Transformations in Metastable Austenitic Steels” Acta metal. mater. 40 7 1703 1716
- Sun X Stephens EV Khaleel MA 2006 Characterization of Thermo-Mechanical Behaviors of Advanced High Strength Steels (AHSS): Formability, Weldability and Performance Evaluations of AHSS Parts for Automotive Structures PNNL-15963 Pacific Northwest National Laboratory Richland, WA