Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation
A systematic study was carried out on a novel designed austenitising bending process to explore the effects of quenching temperatures on the evolution of microstructure and mechanical properties of high-strength micro-alloyed steel. Results reveal that the qualified parts could be bent into a satisf...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-03-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752200079X |
| _version_ | 1811273210014990336 |
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| author | Yao Lu Haibo Xie Jun Wang Fanghui Jia Zhou Li Hamidreza Kamali Jianzhong Xu Jingtao Han Zhengyi Jiang |
| author_facet | Yao Lu Haibo Xie Jun Wang Fanghui Jia Zhou Li Hamidreza Kamali Jianzhong Xu Jingtao Han Zhengyi Jiang |
| author_sort | Yao Lu |
| collection | DOAJ |
| description | A systematic study was carried out on a novel designed austenitising bending process to explore the effects of quenching temperatures on the evolution of microstructure and mechanical properties of high-strength micro-alloyed steel. Results reveal that the qualified parts could be bent into a satisfactory shape without spring-back and cracks in bending temperatures of 850–1000 °C. The simulation was applied to predict the equivalent stress, stress neutral layer (SNL) and plate thickness. Strength presents a decreasing trend with the increase of bending temperature owing to integrated influences of high-temperature dynamic recovery (DRV) and dynamic recrystallisation (DRX). Beyond that, SNL nearby the geometrical centre line throughout the plate thickness and dislocation pile-ups on the tension/compression zones are responsible for the smaller hardness on middle regions while higher hardness on the surface areas. Through austenite reconstruction, a smaller martensite packet size would directly improve the strength of the plates bent at a lower temperature. The prior austenite size may be related to the appearance of martensite variants but not necessary. Furthermore, the high accuracy by comparing the experimental results with simulation would provide a high-value reference for the practical manufacturing process of railway spring clips. |
| first_indexed | 2024-04-12T22:54:00Z |
| format | Article |
| id | doaj.art-c61e6702e8d44b6d958ea0967fa8ab06 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-12T22:54:00Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-c61e6702e8d44b6d958ea0967fa8ab062022-12-22T03:13:15ZengElsevierMaterials & Design0264-12752022-03-01215110458Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulationYao Lu0Haibo Xie1Jun Wang2Fanghui Jia3Zhou Li4Hamidreza Kamali5Jianzhong Xu6Jingtao Han7Zhengyi Jiang8School of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, PR ChinaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaKey Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, PR ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR ChinaSchool of Mechanical, Materials, Mechatronics and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; Corresponding author.A systematic study was carried out on a novel designed austenitising bending process to explore the effects of quenching temperatures on the evolution of microstructure and mechanical properties of high-strength micro-alloyed steel. Results reveal that the qualified parts could be bent into a satisfactory shape without spring-back and cracks in bending temperatures of 850–1000 °C. The simulation was applied to predict the equivalent stress, stress neutral layer (SNL) and plate thickness. Strength presents a decreasing trend with the increase of bending temperature owing to integrated influences of high-temperature dynamic recovery (DRV) and dynamic recrystallisation (DRX). Beyond that, SNL nearby the geometrical centre line throughout the plate thickness and dislocation pile-ups on the tension/compression zones are responsible for the smaller hardness on middle regions while higher hardness on the surface areas. Through austenite reconstruction, a smaller martensite packet size would directly improve the strength of the plates bent at a lower temperature. The prior austenite size may be related to the appearance of martensite variants but not necessary. Furthermore, the high accuracy by comparing the experimental results with simulation would provide a high-value reference for the practical manufacturing process of railway spring clips.http://www.sciencedirect.com/science/article/pii/S026412752200079XHigh-strength and micro-alloyed steelAustenitising bendingMicrostructureMechanical propertiesSimulationAustenite reconstruction |
| spellingShingle | Yao Lu Haibo Xie Jun Wang Fanghui Jia Zhou Li Hamidreza Kamali Jianzhong Xu Jingtao Han Zhengyi Jiang Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation Materials & Design High-strength and micro-alloyed steel Austenitising bending Microstructure Mechanical properties Simulation Austenite reconstruction |
| title | Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation |
| title_full | Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation |
| title_fullStr | Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation |
| title_full_unstemmed | Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation |
| title_short | Design of a novel austenitising bending process in forming characteristics of high-strength quenched and micro-alloyed steel: Experiment and simulation |
| title_sort | design of a novel austenitising bending process in forming characteristics of high strength quenched and micro alloyed steel experiment and simulation |
| topic | High-strength and micro-alloyed steel Austenitising bending Microstructure Mechanical properties Simulation Austenite reconstruction |
| url | http://www.sciencedirect.com/science/article/pii/S026412752200079X |
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