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| Effects of annealing temperature on microstructure and properties of tailor-rolled blank of medium-manganese steel |
| Ying Zhi1, Di-wen Ke1, Xiang-hua Liu1,2, Zhi-xin Feng1 |
1 State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, China
2 School of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, China |
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Abstract The microstructure and mechanical properties of tailor-rolled blank (TRB) of medium-manganese steel during annealing were investigated. The annealing process of austenite-reverted transformation of the experimental steel was formulated. The effects of different morphologies on properties with different annealing temperatures in different thickness zones of TRB were analyzed. In the thin zone, the morphology is blocky, and in the thick zone, the morphology is lamellar. At the same annealing temperature, the tensile strength of the thick zone is lower than that of the thin zone, and the elongation and product of strength and elongation (PSE) of the thick zone are higher than those of the thin zone. With the increase in annealing temperature, the tensile strength increases, while the yield strength, the elongation and the PSE all decrease in the same thickness zone. Because the stability of lamellar austenite is higher than that of blocky austenite, the comprehensive mechanical properties in the thick zone are good. At the annealing temperature of 640 °C, the experimental steel has the best comprehensive mechanical properties, and the maximum PSE is more than 40.0 GPa% in different thickness zones. Particularly, PSE is up to 45.6 GPa% in the thickness zone of 2.0 mm.
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Received: 06 June 2019
Published: 25 August 2020
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| Cite this article: |
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Ying Zhi,Di-wen Ke,Xiang-hua Liu, et al. Effects of annealing temperature on microstructure and properties of tailor-rolled blank of medium-manganese steel[J]. Journal of Iron and Steel Research International, 2020, 27(8): 933-939.
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| [1] |
Zhi-ming Li, Xiang Li, Lei Yang, Zheng-yan Shen, Bi-lei Wang, Shun-li Zhao, Gao-fei Liang, Chang-jiang Song. Effect of coiling and annealing temperatures on yield point behavior of low?carbon steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(3): 325-333. |
| [2] |
Jia-peng ZOU, Kazumichi SHIMIZU, Qi-zhou CAI. Effects of Cr Content and Annealing Temperature on Microstructure and Wear Characteristics of Cast Ausferrite Nodular Iron[J]. Chinese Journal of Iron and Steel, 2015, 22(11): 1049-1054. |
| [3] |
Gulcan TOKTAS,Alaaddin TOKTAS,Aslan Deniz KARAOGLAN. Mathematical Modeling of Carbon Content and Intercritical Annealing Temperature in DP Steels by Factorial Design Method[J]. Chinese Journal of Iron and Steel, 2014, 21(7): 715-722. |
| [4] |
HUO Xiang-dong,MAO Xin-ping,L Sheng-xia. Effect of Annealing Temperature on Recrystallization Behavior of Cold Rolled Ti-Microalloyed Steel[J]. Chinese Journal of Iron and Steel, 2013, 20(9): 105-110. |
| [5] |
Amir Kalantari,Maziyar Azadbeh. Effect of Intermediate Annealing Temperature on Response of Repressing to Densification of Pre-Alloyed Cr-Mo Steel[J]. Chinese Journal of Iron and Steel, 2011, 18(2): 52-56. |
| [6] |
A. Nouri;H Saghafian;Sh Kheirandish. Effects of silicon content and intercritical annealing on the manganese partitioning in dual phase steels[J]. Chinese Journal of Iron and Steel, 2010, 17(5): 44-44. |
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2020, Vol. 27 
