Strain-Hardening Prediction of DP600 Steel Considering the Heterogeneous Deformation Between Ferrite and Martensite

• Autorzy: Gou Rui-Bin , Dan Wen-Jiao , Xu Yong-Sheng , Yu Min , Li Tong-Jie

Identyfikatory

DOI

10.24425/amm.2023.146222

• Języki publikacji: EN

Abstrakty

EN

Dual-phase steels have received extensive attention in autobody frame manufacturing due to the resulting characteristics of an interesting combination of ductile ferrite and hard martensite. Moreover, the ductile ferrite and hard martensite lead to heterogeneous deformation in the boundary between the two phases. Then, geometrically necessary dislocations (GNDs) are created to accommodate a lattice mismatch due to the deformation incompatibility of the boundary in straining. In this study, a new empirical GND model is developed, in which the GND density is a function of local plastic deformation; the GND density is distributed in the phase boundary in accordance with an “S” model of material plastic strain. The boundary conditions are applied to define the parameters. The proposed model is verified with DP600 steel. The effects of the GNDs and the width between ferrite and martensite on the strain hardening of DP600 steel are evaluated.

Słowa kluczowe

EN

strain-hardening model; DP600; GNDs; heterogeneous deformation; mechanical behaviors

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 4
• Strony: 1555--1562
• Opis fizyczny: Bibliogr. 42 poz., rys., tab., wzory

Twórcy

autor

Gou Rui-Bin

• Anhui Science and Technology University, College of Mechanical Engineering, Fengyang 233100, Anhui, China

autor

Dan Wen-Jiao

• Anhui Science and Technology University, College of Mechanical Engineering, Fengyang 233100, Anhui, China

autor

Xu Yong-Sheng

• Shanghai Jiao Tong University, Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai 200240, China

autor

Yu Min

• Anhui Science and Technology University, College of Architecture, Bengbu 233000, Anhui, China

autor

Li Tong-Jie

• Anhui Science and Technology University, College of Mechanical Engineering, Fengyang 233100, Anhui, China

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Uwagi

1. This work was jointly supported by the Anhui university provincial natural science research projects (No. 2022AH051630, No. KJ2021ZD0111 and No. KJ2021A0862), and Anhui province natural science foundation (No. 2108085ME167).

2. Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)