Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates
This paper presents a detailed investigation of the microstructure evolution and crack propagation in quenching and partitioning (Q&P) steel at different strain rates. The results showed that for an increased strain rate from 0.01 s−1 to 500 s−1, the tensile strength increases from 1490 MPa to 1...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423006117 |
| _version_ | 1797798819026436096 |
|---|---|
| author | Shaolong Zhang Wen Zhou Songbo Zhou Feng Hu Serhii Yershov Kaiming Wu |
| author_facet | Shaolong Zhang Wen Zhou Songbo Zhou Feng Hu Serhii Yershov Kaiming Wu |
| author_sort | Shaolong Zhang |
| collection | DOAJ |
| description | This paper presents a detailed investigation of the microstructure evolution and crack propagation in quenching and partitioning (Q&P) steel at different strain rates. The results showed that for an increased strain rate from 0.01 s−1 to 500 s−1, the tensile strength increases from 1490 MPa to 1866 MPa, and the elongation increased from 10.22% to 15.61%. Furthermore, at high strain rates, the lath martensite underwent plastic deformation, and the dislocation density rose markedly. Also the process of low angle grain boundary (LAGB)-to-high angle grain boundary (HAGB) was blocked, which enhanced the line density of LAGB and the strength of the Q&P steel. Moreover, the texture of the Q&P steel changed clearly at different strain rates. It changed from Goss {110}<001> texture at low strain rates to Rotated Goss {110}<110> texture at high strain rates, and the latter type of texture is more conducive to plastic deformation due to its higher Taylor factor. In addition, at higher strain rates, the TRIP effect of the retained austenite (RA) was delayed due to the adiabatic temperature rise effect. In this case, the variants selection tends to the variant 13 (V13), variant 15(V15), and variant 17(V17) of the CP3 group, which inhibited the crack propagation and enhanced the plasticity. Furthermore, at different strain rates, the fracture mode of the Q&P steel was a mixed fracture mechanism containing both toughness and brittleness. However, the fracture mode was more inclined to a ductile fracture at higher strain rates. |
| first_indexed | 2024-03-13T04:10:36Z |
| format | Article |
| id | doaj.art-a97109d58794470dae31707efa30bd00 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:10:36Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a97109d58794470dae31707efa30bd002023-06-21T06:56:03ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012423852402Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain ratesShaolong Zhang0Wen Zhou1Songbo Zhou2Feng Hu3Serhii Yershov4Kaiming Wu5Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, ChinaCollaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China; Corresponding author.Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, ChinaCollaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, ChinaCollaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, ChinaCollaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan, 430081, China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China; Metals Valley & Band (Foshan) Metallic Composite Co. Ltd, Foshan, 528000, China; Corresponding author.This paper presents a detailed investigation of the microstructure evolution and crack propagation in quenching and partitioning (Q&P) steel at different strain rates. The results showed that for an increased strain rate from 0.01 s−1 to 500 s−1, the tensile strength increases from 1490 MPa to 1866 MPa, and the elongation increased from 10.22% to 15.61%. Furthermore, at high strain rates, the lath martensite underwent plastic deformation, and the dislocation density rose markedly. Also the process of low angle grain boundary (LAGB)-to-high angle grain boundary (HAGB) was blocked, which enhanced the line density of LAGB and the strength of the Q&P steel. Moreover, the texture of the Q&P steel changed clearly at different strain rates. It changed from Goss {110}<001> texture at low strain rates to Rotated Goss {110}<110> texture at high strain rates, and the latter type of texture is more conducive to plastic deformation due to its higher Taylor factor. In addition, at higher strain rates, the TRIP effect of the retained austenite (RA) was delayed due to the adiabatic temperature rise effect. In this case, the variants selection tends to the variant 13 (V13), variant 15(V15), and variant 17(V17) of the CP3 group, which inhibited the crack propagation and enhanced the plasticity. Furthermore, at different strain rates, the fracture mode of the Q&P steel was a mixed fracture mechanism containing both toughness and brittleness. However, the fracture mode was more inclined to a ductile fracture at higher strain rates.http://www.sciencedirect.com/science/article/pii/S2238785423006117Strain rateCrack propagationTRIP effectVariantDislocation |
| spellingShingle | Shaolong Zhang Wen Zhou Songbo Zhou Feng Hu Serhii Yershov Kaiming Wu Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates Journal of Materials Research and Technology Strain rate Crack propagation TRIP effect Variant Dislocation |
| title | Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates |
| title_full | Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates |
| title_fullStr | Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates |
| title_full_unstemmed | Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates |
| title_short | Investigation of microstructural evolution and crack extension in a quenching and partitioning (Q & P) steel at different strain rates |
| title_sort | investigation of microstructural evolution and crack extension in a quenching and partitioning q p steel at different strain rates |
| topic | Strain rate Crack propagation TRIP effect Variant Dislocation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423006117 |
| work_keys_str_mv | AT shaolongzhang investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates AT wenzhou investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates AT songbozhou investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates AT fenghu investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates AT serhiiyershov investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates AT kaimingwu investigationofmicrostructuralevolutionandcrackextensioninaquenchingandpartitioningqpsteelatdifferentstrainrates |