Hot deformation behavior of Fe-13Mn-4.4Al-0.64C-0.1Ti low density steel

doi:10.13251/j.issn.0254-6051.2024.12.022

Abstract

Abstract: Hot compression experiments were carried out on Fe-13Mn-4.4Al-0.64C-0.1Ti low density steel at deformation temperature of 900-1100 ℃ and strain rate of 0.01-0.1 s^-1 by Gleeble-3500 thermal simulation testing machine. The strain-compensated constitutive equation was established on the basis of the traditional constitutive model. The hot deformation behavior of the experimental steel was studied by verification and analysis. The influence of deformation conditions on hot deformation behavior and microstructure evolution was studied by electron backscattering diffraction. The results show that the deformation behavior of the Fe-13Mn-4.4Al-0.64C-0.1Ti low density steel is dynamic recrystallization type at the temperature of 900-1100 ℃ and strain rate of 0.01-0.1 s^-1. The flow stress decreases with the increase of deformation temperature or the decrease of strain rate. The migration of small angle boundary to large angle boundary promotes dynamic recrystallization. The hot deformation activation energy of the material is 396.44 kJ/mol. The relative absolute error of the strain-compensated constitutive equation is 5.4%, and the linear fitting correlation coefficient is 0.987, which indicates that the constructed strain-compensated constitutive equation can accurately predict the flow stress behavior of the low density steel under different deformation conditions.

Key words: Fe-Mn-Al-C low density steel, constitutive equation, dynamic recrystallization, microstructure

CLC Number:

TG142.1

Gan Wenxuan, Wu Wenping, Chen Gang, Yang Yong, Li Tianrui, Zhang Xiaofeng, Huang Zhenyi. Hot deformation behavior of Fe-13Mn-4.4Al-0.64C-0.1Ti low density steel[J]. Heat Treatment of Metals, 2024, 49(12): 128-136.

References

[1]Meng S, Zhang T, Zhang K, et al. Effect ofintercritical annealing temperature on microstructure and mechanical properties of V-Ti-Mo microalloyed medium Mn steel[J]. Materials Today Communications, 2024, 38: 108391.
[2]Castan C, Montheillet F, Perlade A. Dynamic recrystallization mechanisms of an Fe-8%Al low density steel under hot rolling conditions[J]. Scripta Materialia, 2013, 68(6): 360-364.
[3]齐程伟, 董福涛, 代鑫, 等. 热轧工艺对Fe-30Mn-9Al-1C-3Cu低密度钢组织性能的影响[J]. 中国冶金, 2024, 36(6): 74-82.
Qi Chengwei, Dong Futao, Dai Xin, et al. Effect of hot rolling process on microstructure and mechanical properties of Fe-30Mn-9Al-1C-3Cu low-density steel[J]. Chian Metallurgy, 2024, 36(6): 74-82.
[4]丁奔, 蔡军, 张兵, 等. GH4169稀土强化镍基高温合金热变形行为[J]. 塑性工程学报, 2023, 30(9): 131-141.
Ding Ben, Cai Jun, Zhang Bing, et al. Hot deformation behavior of GH4169 rare earth reinforced Ni-base superalloy[J]. Journal of Plasticity Engineering, 2023, 30(9): 131-141.
[5]Zhao Ting, Rong Shengwei, Hao Xiaohong, et al. Effect of Nb-V microalloying on hot deformation characteristics and microstructures of Fe-Mn-Al-C austenitic steel[J]. Materials Characterization, 2022, 183: 111595.
[6]Mozumder Yahya H, Babu Arun K, Saha Rajib, et al. Flow characteristics and hot workability studies of a Ni-containing Fe-Mn-Al-C lightweight duplex steel[J]. Materials Characterization, 2018, 146: 1-14.
[7]Wan Peng, Kang Tao, Li Feng, et al. Dynamic recrystallization behavior and microstructure evolution of low-density high-strength Fe-Mn-Al-C steel[J]. Journal of Materials Research and Technology, 2021, 15: 1059-1068.
[8]Liu Jinxu, Li Leilei, Yang Shanwu, et al. Effect of intragranular κ carbides and intergranular precipitates on the hot deformation mechanism and dynamic recrystallization mechanism of Fe-28Mn-11Al-1.5C-5Cr lightweight steel[J]. Journal of Materials Research and Technology, 2023, 27: 2346-2362.
[9]张婧, 王存宇, 王辉, 等. 奥氏体型Fe30Mn9Al0.9C低密度钢的热变形行为研究[J]. 钢铁研究学报, 2023, 35(4): 434-442.
Zhang Jing, Wang Cunyu, Wang Hui, et al. Research on hot deformation behavior of austenite Fe30Mn9Al0.9C low density steel[J]. Journal of Iron and Steel Research, 2023, 35(4): 434-442.
[10]付志强, 何国爱, 吴赟杰, 等. 新型Co-Ni基高温合金的热变形行为及微观组织演变[J]. 金属热处理, 2024, 49(2): 1-7.
Fu Zhiqiang, He Guoai, Wu Yunjie, et al. Hot deformation behavior and microstructure evolution of a novel Co-Ni-based superalloy[J]. Heat Treatment of Metals, 2024, 49(2): 1-7.
[11]Zhang Ke, Zhang Tenghao, Zhang Mingya, et al. Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti-V microalloyed high strength steel[J]. Journal of Materials Research and Technology, 2023, 25: 4201-4215.
[12]唐珲, 涂露寒, 黎颖, 等. 耐热钢2Cr12Ni4Mo3VNbN的热变形行为[J]. 金属热处理, 2023, 48(11): 22-28.
Tang Hui, Tu Luhan, Li Ying, et al. Hot deformation behavior of heat-resistant steel 2Cr12Ni4Mo3VNbN[J]. Heat Treatment of Metals, 2023, 48(11): 22-28.
[13]霍巍丰, 宋仁伯, 张宇, 等. Fe-4Mn-1.5Al-0.5Si-0.2C-0.05Nb中锰钢的热变形行为研究[J]. 轧钢, 2023, 40(1): 17-22.
Huo Weifeng, Song Renbo, Zhang Yu, et al. Research on hot deformation behavior of Fe-4Mn-1.5Al-0.5Si-0.2C-0.05Nb medium Mn steel[J]. Steel Rolling, 2023, 40(1): 17-22.
[14]杜忠泽, 齐泽江, 党雪, 等. SCM435钢的热压缩流变行为及组织演变[J]. 金属热处理, 2024, 49(1): 76-83.
Du Zhongze, Qi Zejiang, Dang Xue, et al. Rheological behavior and microstructure evolution of SCM435 steel under thermal compression[J]. Heat Treatment of Metals, 2024, 49(1): 76-83.
[15]Zambrano Q A, Valdes J, Aguilai Y, et al. Hot deformation of a Fe-Mn-Al-C steel susceptible of k-carbide precipitation[J]. Materials Science and Engineering A, 2017, 689: 269-285.
[16]Hamada A S, Karjalainen L P, Somani M C, et al. Deformation mechanisms in high-Al bearing high-Mn TWIP steels in hot compression and in tension at low temperatures[J]. Materials Science Forum, 2007, 550: 217-222.
[17]Zhang Jingqi, Di Hongshuang, Wang Xiaoyu, et al. Constitutive analysis of the hot deformation behavior of Fe-23Mn-2Al-0.2C twinning induced plasticity steel in consideration of strain[J]. Materials & Design, 2013, 44: 354-364.
[18]Guo Zhikai, Li Longfei. Influences of alloying elements on warm deformation behavior of high-Mn TRIP steel with martensitic structure[J]. Materials & Design, 2016, 89: 665-675.
[19]Hamada A S, Karjalainen L P, Somani M C. The influence of aluminum on hot deformation behavior and tensile properties of high-Mn TWIP steels[J]. Materials Science and Engineering A, 2007, 467(1): 114-124.
[20]Hamada Atef, Juuti Timo, Khosravifard Ali, et al. Effect of silicon on the hot deformation behavior of microalloyed TWIP-type stainless steels[J]. Materials & Design, 2018, 154: 117-129.
[21]Laasraoui A, Jonas J J. Prediction of steel flow stresses at high temperatures and strain rates[J]. Metallurgical Transactions A, 1991, 22: 1545-1558.
[22]刘宁, 旷五洲, 陈俊. 含钒高锰LNG储罐用钢热变形行为及组织演变研究[J]. 轧钢, 2023, 40(5): 25-31.
Liu Ning, Kuang Wuzhou, Chen Jun. Study on hot deformation behaviors and microstructure evolution of V-bearing high Mn steel for LNG tank[J]. Steel Rolling, 2023, 40(5): 25-31.
[23]孙文明, 李韶林, 宋克兴, 等. 铸态Cu-1.16Ni-0.36Cr合金热变形行为及热加工图[J]. 材料导报, 2024, 38(2): 224-231.
Sun Wenming, Li Shaolin, Song Kexing, et al. Hot deformation behavior and processing diagram of as-cast Cu-1.16Ni-0.36Cr alloy[J]. Materials Reports, 2024, 38(2): 224-231.
[24]Miahra Bidyapati, Singh Vajinder, Sarkar Rajdeep, et al. Dynamic recovery and recrystallization mechanisms in secondary B2 phase and austenite matrix during hot deformation of Fe-Mn-Al-C-(Ni) based austenitic low-density steels[J]. Materials Science and Engineering A, 2022, 842: 143095.
[25]Ji Hongbin, Wang Jianmei, Wang Zhenyu, et al. The effect of high-temperature ECAP on dynamic recrystallization behavior and material strength of 42CrMo steel[J]. Materials Science and Engineering A, 2023, 887: 145732.
[26]Pei Yanbo, Yuan Meng, Wei Enbo, et al. Effect of strain rate on dynamic recrystallization mechanism of Mg-Gd-Y-Sm-Zr alloy during hot compression[J]. Journal of Materials Research and Technology, 2023, 25: 5038-5050.