Improving impact property of 52CrMoV4 spring flat steel by high temperature diffusion

doi:10.13251/j.issn.0254-6051.2024.01.019

Abstract

Abstract: In order to improve the plasticity and toughness of 52CrMoV4 spring flat steel with large section, the hot rolled 52CrMoV4 flat steel was hot forged and high temperature diffused. The impact property of the hot-rolled, forged and high temperature diffused flat steel after quenching and tempering was measured, as well as the impact fracture morphology, microstructure and hardness were investigated. The results show that compared with the hot-rolled flat steel, the effect of hot forging on improving the microstructure and properties of the flat steel is limited. High temperature diffusion at 1220 ℃ can homogenize the composition and microstructure of the flat steel, the transverse impact absorbed energy at core of the flat steel is increased by about 45%.

Key words: spring steel, high temperature diffusion, segregation, impact property

CLC Number:

TG142.1

Min Yongan, Shao Jiajun, Zhang Wentao, Liu Chao, Han Xiaoli. Improving impact property of 52CrMoV4 spring flat steel by high temperature diffusion[J]. Heat Treatment of Metals, 2024, 49(1): 126-130.

References

[1]徐德祥, 尹钟大. 弹簧钢高强度化及合金元素的作用[J]. 金属热处理, 2003, 28(12): 30-36.
Xu Dexiang, Yin Zhongda. High strengthening spring steels and effect of alloying elements[J]. Heat Treatment of Metals, 2003, 28(12): 30-36.
[2]邢献强, 曹文全, 王存宇. 汽车悬架系统用55SiCr弹簧钢丝带状组织[J]. 钢铁, 2020, 55(3): 68-73.
Xing Xianqiang, Cao Wenquan, Wang Cunyu. Bond structure of 55SiCr steel used for coil springs of automotive suspension system[J]. Iron and Steel, 2020, 55(3): 68-73.
[3]Feng R, Gong B, Cui H, et al. The influence of abnormal segregation band on mechanical properties of hot rolled ferrite/pearlite steel plate[J]. Materials Sciences and Applications, 2018, 9: 81-91.
[4]Wang Q, Ye Q, Wang Z, et al. Thickness effect on microstructure, strength, and toughness of a quenched and tempered 178 mm thickness steel plate[J]. Metals, 2020, 10(5): 572.
[5]Podgornik B, Leskovek V, Godec M, et al. Microstructure refinement and its effect on properties of spring steel[J]. Materials Science and Engineering A, 2014, 599: 81-86.
[6]王伟, 董庆, 魏丽华, 等. 高温扩散对轴承钢盘条带状组织的影响[J]. 热加工工艺, 2020, 49(17): 112-114.
Wang Wei, Dong Qing, Wei Lihua, et al. Effect of high temperature diffusion on banded microstructure of bearing steel wire rod[J]. Hot Working Technology, 2020, 49(17): 112-114.
[7]秦树超, 黄翠环, 赵昊乾, 等. 高温扩散对SWRS87B钢盘条显微组织的改善[J]. 金属热处理, 2017, 42(12): 199-202.
Qin Shuchao, Huang Cuihuan, Zhao Haoqian, et al. Microstructure improvement of SWRS87B steel wire rod by high temperature diffusion[J]. Heat Treatment of Metals, 2017, 42(12): 199-202.
[8]刘丹, 陈广兴, 徐琛, 等. 热处理工艺对15CrMoR钢带状组织和冲击性能的影响[J]. 金属热处理, 2020, 45(10): 124-128.
Liu Dan, Chen Guangxing, Xu Chen, et al. Effect of heat treatment process on banded structure and impact properties of 15CrMoR steel[J]. Heat Treatment of Metals, 2020, 45(10): 124-128.
[9]陆佳晖, 闵永安, 岳加佳, 等. 大型铝合金压铸模的性能均匀性与开裂机理[J]. 材料热处理学报, 2019, 40(3): 62-69.
Lu Jiahui, Min Yongan, Yue Jiajia, et al. Uniformity of properties and cracking mechanism of large-scale aluminum alloy casting die[J]. Transactions of Materials and Heat Treatment, 2019, 40(3): 62-69.
[10]林晓娉, 董允, 李智超. 组织遗传对粒状贝氏体钢力学性能的影响[J]. 金属热处理, 1996, 21(9): 22-24.
Lin Xiaoping, Dong Yun, Li Zhichao. Influence of structural inheritance on the property of granular bainite steel[J]. Heat Treatment of Metals, 1996, 21(9): 22-24.
[11]沙桂英, 樊景舜, 马茂元, 等. 20CrMnMo及17Cr2Ni2Mo钢的晶粒长大及组织遗传[J]. 金属热处理, 1995, 20(6): 24-27.
Sha Guiying, Fan Jingshun, Ma Maoyuan, et al. The grain growth and structure inheritance of 20CrMnMo and 17Cr2Ni2Mo steels[J]. Heat Treatment of Metals, 1995, 20(6): 24-27.
[12]孙国才, 张宇, 陈焕德. 磷含量和回火温度对弹簧钢组织和力学性能的影响[J]. 上海金属, 2022, 44(2): 56-71.
Sun Guocai, Zhang Yu, Chen Huande. Effect of phosphorus content and tempering temperature on microstructure and mechanical properties of spring steel[J]. Shanghai Metals, 2022, 44(2): 56-71.
[13]Xia B, Zhang P, Wang B, et al. A simultaneous improvement of the strength and plasticity of spring steels by replacing Mo with Si[J]. Materials Science and Engineering A, 2021, 820: 141516.
[14]王超, 柯加祥, 杨东欧, 等. 回火温度对50CrVA钢组织性能的影响[J]. 山东冶金, 2020, 42(6): 41-43.
[15]徐平伟, 梁益龙, 黄朝文. 奥氏体晶粒对52CrMoV4弹簧钢强韧性的影响[J]. 材料热处理学报, 2012, 33(1): 89-93.
Xu Pingwei, Liang Yilong, Huang Chaowen. Effect of austenite grain size on strength and toughness of a spring steel 52CrMoV4[J]. Transactions of Materials and Heat Treatment, 2012, 33(1): 89-93.
[16]李春来, 潘雪新, 郭继祥, 等. 带状组织对S355J2W(H)耐候钢板冲击性能的影响[J]. 热加工工艺, 2021, 50(6): 46-49.
Li Chunlai, Pan Xuexin, Guo Jixiang, et al. Influence of banded structure on impact property of S355J2W(H) weathering steel plate[J]. Hot Working Technology, 2021, 50(6): 46-49.
[17]马党参, 周健, 张忠侃, 等. 电渣重熔速度对H13钢组织和冲击性能的影响[J]. 钢铁, 2010, 45(8): 80-84.
Ma Dangshen, Zhou Jian, Zhang Zhongkan, et al. Effect of the melting rate of ESR on the microstructure and impact properties of H13 steel[J]. Iron and Steel, 2010, 45(8): 80-84.