Characterization of the Fracture Toughness of TRIP 800 Sheet Steels Using Microstructure-Based Finite Element Analysis
Recently, several studies conducted by automotive industry revealed the tremendous advantages of Advanced High Strength Steels (AHSS). TRansformation Induced Plasticity (TRIP) steel is one of the typical representative of AHSS. This kind of materials exhibits high strength as well as high formability. Analyzing the crack behaviour in TRIP steels is a challenging task due to the microstructure level inhomogeneities between the different phases (ferrite, bainite, austenite, martensite) that constitute these materials. This paper aims at investigating the fracture resistance of TRIP steels. For this purpose, a micromechanical finite element model is developed based on the actual microstructure of a TRIP 800 steel. Uniaxial tensile tests on TRIP 800 sheet notched specimens were also conducted and tensile properties and R-curves (Resistance curves) were determined. The comparison between simulation and experimental results leads us to the conclusion that the method using microstructure-based representative volume element (RVE) captures well enough the complex behavior of TRIP steels. The effect of phase transformation, which occurs during the deformation process, on the toughness is observed and discussed.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
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Supplemental Notes:
- Abstract reprinted with permission of SAE International.
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Authors:
- Soulami, A
- Choi, K S
- Liu, W N
- Sun, X
- Khaleel, M A
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Conference:
- SAE World Congress & Exhibition
- Location: Detroit Michigan, United States
- Date: 2008-4-14 to 2008-4-17
- Publication Date: 2009-4-20
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: 2009-01-0800
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Serial:
- SAE Technical Paper
- Publisher: Society of Automotive Engineers (SAE)
- ISSN: 0148-7191
- EISSN: 2688-3627
- Serial URL: http://papers.sae.org/
Subject/Index Terms
- TRT Terms: Automotive materials; Finite element method; Fracture properties; High strength steel; Microstructure; Steel sheets
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 01862195
- Record Type: Publication
- Source Agency: SAE International
- Report/Paper Numbers: 2009-01-0800
- Files: TRIS, SAE
- Created Date: Oct 24 2022 10:22AM