Microstructure and mechanical properties of heterostructured medium carbon dual-phase steel wire

doi:10.13251/j.issn.0254-6051.2023.07.006

Abstract

Abstract: Heterogeneous medium carbon duplex steel wire was prepared by cold drawing and subsequent annealing process based on the emerging heterogeneous materials concept. The microstructure and mechanical properties were studied by means of optical microscope, scanning electron microscope, hardness and tensile tests, and the relationship between microstructure and mechanical properties was investigated. The results show that cold drawing with large deformation combined with short-time intercritical annealing can effectively control the microstructure, which can promote martensite transformation and reduce ferrite recrystallization, and an ideal heterogeneous duplex structure of fine ferrite surrounded by a large amount of martensite was introduced. With the increase of cold drawing strain and annealing temperature, the volume fraction of martensite increases, the grain size of ferrite decreases, and the strength and hardness of the steel wire are significantly improved, which is equivalent to that of high carbon steel wire. The superior properties of the heterogeneous medium carbon duplex steel wire is come from ferrite grain refinement, a large number of dislocations generated in ferrite during martensitic transformation, and non-uniform deformation caused by mechanical incompatibility of heterostructure structures of martensite/ferrite.

Key words: steel wire, annealing, heterostructured materials, dual-phase steel, mechanical property

CLC Number:

TG142.1

Liu Yilin, Chen Rugan, Jia Yuxin, Li Yusheng, Fan Wen, Zheng Xiaoteng. Microstructure and mechanical properties of heterostructured medium carbon dual-phase steel wire[J]. Heat Treatment of Metals, 2023, 48(7): 32-37.

References

[1]涂益友. 高速大应变冷拔钢丝的组织和力学性能[D]. 南京: 东南大学, 2006.
Tu Yiyou. The microstructure and mechanical performance of high speed severe cold drawn steel wire[D]. Nanjing: Southeast University, 2006.
[2]李成良, 雷中钰, 寻忠忠, 等. 冷拉拔对高碳钢盘条组织和性能的影响[J]. 江西冶金, 2020, 40(5): 34-39.
Li Chengliang, Lei Zhongyu, Xun Zhongzhong, et al. Study on the effect of cold drawing on the microstructure and properties of high carbon steel wire[J]. Jiangxi Metallurgy, 2020, 40(5): 34-39.
[3]陈得友, 闵学刚, 李龙, 等. 拉拔方式对高碳钢丝组织性能的影响[J]. 东南大学学报(自然科学版), 2019, 49(4): 749-756.
Chen Deyou, Min Xuegang, Li Long, et al. Effects of drawing methods on the microstructure and mechanical properties of high carbon steel wire[J]. Journal of Southeast University(Natural Science Edition), 2019, 49(4): 749-756.
[4]Zhu Y T, Ameyama K, Anderson P M, et al. Heterostructured materials: Superior properties from hetero-zone interaction[J]. Materials Research Letters, 2021, 9(1): 1-31.
[5]Wu X L, Yang M X, Yuan F P, et al. Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility[J]. Proceedings of the National Academy of Sciences of the United States of America, 2015, 112(47): 14501-14505.
[6]Wu X L, Zhu Y T. Perspective on hetero-deformation induced (HDI) hardening and back stress[J]. Materials Research Letters, 2019, 7(10): 393-398.
[7]Wu X L, Zhu Y T. Heterogeneous materials: A new class of materials with unprecedented mechanical properties[J]. Materials Research Letters, 2017, 5: 527-532.
[8]Hung C X, Wang Y F, Ma X L, et al. Interface affected zone for optimal strength and ductility in heterogeneous laminate[J]. Materials Today, 2018, 21(7): 713-719.
[9]Tasan C C, Diehl M, Yan D, et al. An overview of dual-phase steels: Advances in microstructure-oriented processing and micromechanically guided design[J]. Annual Review of Materials Research, 2015, 45(1): 391-431.
[10]Gao B, Hu R, Pan Z Y, et al. Strengthening and ductilization of laminate dual-phase steels with high martensitecontent[J]. Journal of Materials Science and Technology, 2021, 65 (6): 29-37.
[11]Gao B, Lai Q Q, Cao Y, et al. Ultrastrong low-carbon nanosteel produced by heterostructure and interstitial mediated warm rolling[J]. Science Advances, 2020, 6(39): 8169-8192.
[12]Son Y I, Lee Y K, Park K T. Ultrafine grained ferrite-martensite dual phase steels fabricated via equal channel angular pressing: Microstructure and tensile properties[J]. Acta Materialia, 2005, 53: 3125-3134.
[13]Zheng C W, Raabe D. Interaction between recrystallization and phase transformation during intercritical annealing in a cold-rolled dual-phase steel: A cellular automaton model[J]. Acta Materialia, 2013, 61: 5504-5517.
[14]Peranio N, Roters F, Raabe D. Microstructure evolution during recrystallization in dual-phase steels[J]. Materials Science Forum, 2012, 715-716: 13-22.
[15]Azizi-Alizamini H, Militzer M, Poole W J. Austenite formation in plain low-carbon steels[J]. Metallurgical and Materials Transactions A, 2010, 3: 1544-1557.