唐蕊,李雨桐,余志富,闫述

• 1:东北大学材料科学与工程学院

摘要(Abstract)：

分析了平整轧制变形量对Fe-0.26C-11.9Mn-1.68Al-1.49Si(mass%)中锰钢微观组织、力学性能及变形行为的影响。结果表明：退火态中锰钢的显微组织由回复状态的马氏体+奥氏体组成，呈现出异质结构特征；随着平整轧制的进行，中锰钢的晶粒沿轧制方向拉长，粗晶奥氏体转变为细小马氏体晶粒，晶粒尺寸更加均匀；当平整压下率增加到15%时，中锰钢的屈服强度由754 MPa提升至1162 MPa,抗拉强度由1285 MPa提高至1627 MPa,而伸长率从42.2%降至24.5%;平整轧制过程中部分稳定性差的奥氏体提前发生相变，因此在拉伸塑性变形阶段，TRIP(Transformation induced plasticity)效应缓慢而连续地发生；平整轧制后中锰钢的显微组织异构特征逐渐减弱，但由于初始位错密度的提高，仍表现为连续屈服，此外由于奥氏体体积分数的下降，PLC(Portevin-Le Chatelier)效应减弱。

关键词(KeyWords)： 中锰钢;逆相变退火;平整轧制;奥氏体;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 唐蕊,李雨桐,余志富,闫述

DOI: 10.13289/j.issn.1009-6264.2024-0600

参考文献(References)：

• [1] Magagnosc D J,Field D M,Meredith C S,et al.Temperature and stress dependent twinning behavior in a fully austenitic medium-Mn steel[J].Acta Materialia,2022,231:117864.
• [2] Yan S,Yu Z F,Liang T S,et al.Unusual step-like stress flow behavior and mechanisms of a 1.3 GPa grade medium-Mn steel with 51.2% ductility[J].Materials & Design,2023,235:112380.
• [3] Hu C,Huang C,Liu Y,et al.The dual role of TRIP effect on ductility and toughness of a medium Mn steel[J].Acta Materialia,2023,245:118629.
• [4] 王镜，徐鑫，王鹏飞，等.奥氏体逆相变对一种Fe-Mn-Al-C-Cr-V冷轧高强中锰钢组织性能的影响[J].材料热处理学报，2025,46(3):140-149.WANG Jing,XU Xin,WANG Peng-fei,et al.Influence of austenite reverse transformation on microstructure and properties of a Fe-Mn-Al-C-Cr-V cold-rolled high-strength medium-Mn steel[J].Transactions of Materials and Heat Treatment,2025,46(3):140-149.
• [5] Kim D W,Yoo J,Sohn S S,et al.Austenite reversion through subzero transformation and tempering of a boron-doped strong and ductile medium-Mn lightweight steel[J].Materials Science and Engineering A,2021,802:140619.
• [6] Wang X G,Wang L,Huang M X.Kinematic and thermal characteristics of Lüders and Portevin-Le Chatelier bands in a medium Mn transformation-induced plasticity steel[J].Acta Materialia,2017,124:17-29.
• [7] Yan S,Li T L,Liang T S,et al.By controlling recrystallization degree:A plain medium Mn steel overcoming Lüders deformation and low yield-to-tensile ratio simultaneously[J].Materials Science and Engineering A,2019,758:79-85.
• [8] 周宇航，杨明维，冯运莉.轻质中锰钢局部变形带的研究现状[J].材料导报，2024,38(21):252-259.ZHOU Yu-hang,YANG Ming-wei,FENG Yun-li.Advances in research of local deformation zone in lightweight medium manganese steels[J].Materials Reports,2024,38(21):252-259.
• [9] 胡斌，屠鑫，王玉，等.中锰钢塑性失稳现象的研究进展及未来研究展望[J].工程科学学报，2020,42(1):48-59.HU Bin,TU Xin,WANG Yu,et al.Recent progress and future research prospects on the plastic instability of medium-Mnsteels:a review[J].Chinese Journal of Engineering,2020,42(1):48-59.
• [10] Cai Z H,Ding H,Misra R D K,et al.Austenite stability and deformation behavior in a cold-rolled transformation-induced plasticity steel with medium manganese content[J].Acta Materialia,2015,84:229-236.
• [11] Han J,Lee S J,Jung J G,et al.The effects of the initial martensite microstructure on the microstructure and tensile properties of intercritically annealed Fe-9Mn-0.05C steel[J].Acta Materialia,2014,78:369-377.
• [12] Ryu J H,Kim D I,Kim H S,et al.Strain partitioning and mechanical stability of retained austenite[J].Scripta Materialia,2010,63(3):297-299.
• [13] Tirumalasetty G K,van Huis M A,Kwakernaak C,et al.Deformation-induced austenite grain rotation and transformation in TRIP-assisted steel[J].Acta Materialia,2012,60(3):1311-1321.
• [14] 杜一飞，闫佳鹤，冯运莉.中锰钢微观结构调控与强韧化机制研究进展[J].金属热处理，2023,48(4):28-34.DU Yi-fei,YAN Jia-he,FENG Yun-li.Research progress on microstructure regulation and strengthening and toughening mechanism of medium Mn steel[J].Heat Treatment of Metals,2023,48(4):28-34.
• [15] Li Z C,Ding H,Misra R D K,et al.Deformation behavior in cold-rolled medium-manganese TRIP steel and effect of pre-strain on the Lüders bands[J].Materials Science and Engineering A,2017,679:230-239.
• [16] 白鹏飞，任凤章，殷立涛，等.中锰钢热轧与冷轧退火工艺下组织与性能差异综述[J].材料热处理学报，2024,45(1):22-33.BAI Peng-fei,REN Feng-zhang,YIN Li-tao,et al.Summary of differences in microstructure and properties between hot-rolled and cold-olled annealing processes of medium manganese steel[J].Transactions of Materials and Heat Treatment,2024,45(1):22-33.
• [17] 王存宇，常颖，周峰峦，等.高强度高塑性第三代汽车钢的M3组织调控理论与技术[J].金属学报，2020,56(4):400-410.WANG Cun-yu,CHANG Ying,ZHOU Feng-luan,et al.M3 microstructure control theory and technology of the third-generation automotive steels with high strength and high ductility[J].Acta Metallurgica Sinica,2020,56(4):400-410.
• [18] 邵成伟，惠卫军，张永健，等.一种新型高强度高塑性冷轧中锰钢的组织和力学性能[J].金属学报，2019,55(2):191-201.SHAO Cheng-wei,HUI Wei-jun,ZHANG Yong-jian,et al.Microstructure and mechanical properties of a novel cold rolled medium-Mn steel with superior strength and ductility[J].Acta Metallurgica Sinica,2019,55(2):191-201.
• [19] Li Y J,Yuan G,Li L L,et al.Ductile 2-GPa steels with hierarchical substructure[J].Science,2023,379(6628):168-173.
• [20] Zhao S,Song R B,Zhang Y C,et al.Effect of warm rolling and heat treatment on heterogeneous austenite morphology and tensile property of 3Mn steel[J].Materials & Design,2024,241:112954.
• [21] 张喜亮，侯华峰，刘涛，等.一种新型高强塑积异质冷轧中锰钢的力学性能[J].材料研究学报，2019,33(12):927-934.ZHANG Xi-liang,HOU Hua-feng,LIU Tao,et al.Microstructure and mechanical properties of a novel heterogeneous cold-rolled medium Mn Steel with high product of strength and ductility[J].Chinese Journal of Materials Research,2019,33(12):927-934.
• [22] 汤茜，李化龙.冷轧压下率和平整伸长率对低碳钢退火板组织性能的影响[J].金属热处理，2016,41(6):31-36.TANG Xi,LI Hua-long.Effects of cold rolling reduction rate and flat extension rate on microstructure and properties of annealed low carbon steel sheet[J].Heat Treatment of Metals,2016,41(6):31-36.
• [23] Hu B J,Zheng Q Y,Lu Y,et al.Stabilizing austenite via intercritical Mn partitioning in a medium Mn steel[J].Scripta Materialia,2023,225:115162.
• [24] Tonizzo Q,Gourgues-Lorenzon A F,Mazière M,et al.Microstructure,plastic flow and fracture behavior of ferrite-austenite duplex low density medium Mn steel[J].Materials Science and Engineering A,2017,706:217-226.
• [25] Varanasi R S,Zaefferer S,Sun B N,et al.Localized deformation inside the Lüders front of a medium manganese steel[J].Materials Science and Engineering A,2021,824:141816.
• [26] Wang X G,Liu C H,He B B,et al.Microscopic strain partitioning in Lüders band of an ultrafine-grained medium Mn steel[J].Materials Science and Engineering A,2019,761:138050.
• [27] Ma J W,Lu Q,Sun L,et al.Two-step intercritical annealing to eliminate Lüders band in a strong and ductile medium Mn steel[J].Metallurgical and Materials Transactions A,2018,49(10):4404-4408.
• [28] Sun G S,Liu J Z,Zhu Y T.Heterostructure alleviates Lüders deformation of ultrafine-grained stainless steels[J].Materials Science and Engineering A,2022,848:143393.
• [29] Hu B,Luo H W.A novel two-step intercritical annealing process to improve mechanical properties of medium Mn steel[J].Acta Materialia,2019,176:250-263.
• [30] Yang F,Luo H W,Pu E X,et al.On the characteristics of Portevin-Le Chatelier bands in cold-rolled 7Mn steel showing transformation induced plasticity[J].International Journal of Plasticity,2018,103:188-202.

文章评论(Comment)：