Fracture Resistance of Advanced High-Strength Steel Sheets for Automotive Applications

Frómeta, D. (author): Unit of Metallic and Ceramic Materials, Eurecat, Centre Tecnològic de Catalunya, Plaça de la Ciència, 2, 08243, Manresa, Spain

Lara, A. (author): Unit of Metallic and Ceramic Materials, Eurecat, Centre Tecnològic de Catalunya, Plaça de la Ciència, 2, 08243, Manresa, Spain

Grifé, L. (author): Unit of Metallic and Ceramic Materials, Eurecat, Centre Tecnològic de Catalunya, Plaça de la Ciència, 2, 08243, Manresa, Spain

Dieudonné, T. (author): ArcelorMittal Maizières Research SA, Voie Romaine, BP30320, 57283, Maizières-les-Metz, France

Dietsch, P. (author): ArcelorMittal Maizières Research SA, Voie Romaine, BP30320, 57283, Maizières-les-Metz, France

Rehrl, J. (author): voestalpine Stahl GmbH, voestalpine-Straße 3, 4020, Linz, Austria

Suppan, C. (author): voestalpine Stahl GmbH, voestalpine-Straße 3, 4020, Linz, Austria

Casellas, Daniel (author): Luleå tekniska universitet,Material- och solidmekanik,Unit of Metallic and Ceramic Materials, Eurecat, Centre Tecnològic de Catalunya, Plaça de la Ciència, 2, 08243, Manresa, Spain

Calvo, J. (author): Materials Science and Engineering Department, Universitat Politècnica de Catalunya, Eduard Maristany 16, 08019, Barcelona, Spain

(creator_code:org_t)

2021-01-03
2021
English.
In: Metallurgical and Materials Transactions. A. - : Springer. - 1073-5623 .- 1543-1940. ; 52:2, s. 840-856

Related links:: https://doi.org/10.1...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

The fracture resistance of different advanced high-strength steel (AHSS) sheets for automotive applications is investigated through conventional tensile tests, fracture toughness measurements, and hole expansion tests. Different fracture-related parameters, such as the true fracture strain (TFS), the true thickness strain (TTS), the fracture toughness at crack initiation (wie), the specific essential work of fracture (we), and the hole expansion ratio (HER), are assessed. The specific essential work of fracture (we) is shown to be a suitable parameter to evaluate the local formability and fracture resistance of AHSS. The results reveal that fracture toughness cannot be estimated from any of the parameters derived from tensile tests and show the importance of microstructural features on crack propagation resistance. Based on the relation fracture toughness-local formability, a new AHSS classification mapping accounting for global formability and cracking resistance is proposed. Furthermore, a physically motivated fracture criterion for edge-cracking prediction, based on thickness strain measurements in fatigue pre-cracked DENT specimens, is proposed.

By the author/editor: Frómeta, D.; Lara, A.; Grifé, L.; Dieudonné, T.; Dietsch, P.; Rehrl, J.; show more...; Suppan, C.; Casellas, Daniel; Calvo, J.; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Applied Mechanic ...

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