Criterion for microcrack resistance of multi-phase steels based on property gradient maps
| Autor: | Danuta Szeliga, Lukasz Madej, Maciej Pietrzyk, Wolfgang Bleck, Yuling Chang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Mechanical property Materials science Multi phase Property (programming) Mechanical Engineering 02 engineering and technology Function (mathematics) Microstructure Industrial and Manufacturing Engineering 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Ultimate tensile strength Formability Deformation (engineering) Composite material |
| Zdroj: | CIRP Annals. 70:243-246 |
| ISSN: | 0007-8506 |
| DOI: | 10.1016/j.cirp.2021.04.003 |
| Popis: | A novel criterion for microcrack resistance of multi-phase steels based on property gradient maps is proposed. Two industrial sheets of steel were processed to obtain dual-phase and complex-phase microstructures with exactly the same chemical composition. Experimental investigations showed characteristic differences for the tensile tests, hole expansion and the local plastic behavior during deformation. An innovative full-field modeling approach that explicitly predicts mechanical property gradients as a function of microstructural gradients during forming was developed and validated. This allowed to form a new criterion for evaluation of structure–property relationship in nano-structured multi-phase steels and can reveal the formability limitations. |
| Databáze: | OpenAIRE |
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