Effect of tempering temperature on microstructure and strength-toughness of high-strength wear-resistant steel

doi:10.13251/j.issn.0254-6051.2024.12.003

Abstract

Abstract: Effect of tempering temperature on microstructure and strength-toughness of high-strength wear-resistant steel was studied in the tempering temperature range of 200-700 ℃. The results show that the martensite lath degenerates after tempering at 500-700 ℃, resulting in a significant decrease in tensile strength, yield strength, and hardness. The impact absorbed energys of V-notch and U-notch are both less than 12 J. After tempering at 200-400 ℃, the impact properties of the specimens are significantly improved. The tempering temperatures corresponding to the impact absorbed energy peak of V-notch and U-notch are 250 ℃ and 300 ℃, respectively. The yield strength and tensile strength are maintained at more than 1340 MPa and 1660 MPa, respectively, and the elongation exceeds 10%. The tested steel achieves the best comprehensive mechanical properties after tempering at 250 ℃, with V-notch and U-notch impact absorbed energy of 40 J and 59 J, respectively, the yield strength of 1374 MPa, the yield ratio of 0.80 and the strength-toughness product of 92 269 MPa·J·cm^-2. Based on the hindering effect of Si on the precipitation of cementite, the higher Si content in the steel increases the temper brittleness range. The tempering temperature brittleness range of the tested steel is 450-700 ℃.

Key words: high-strength wear-resistant steel, tempering temperature, microstructure, strength-toughness, impact property, temper brittleness

CLC Number:

TG156

He Shuai, Li Zhifeng, Liu Xin, Qin Zhe, Liu Xuming. Effect of tempering temperature on microstructure and strength-toughness of high-strength wear-resistant steel[J]. Heat Treatment of Metals, 2024, 49(12): 20-26.

References

[1]魏世忠, 徐流杰. 钢铁耐磨材料研究进展[J]. 金属学报, 2020, 56(4): 523-538.
Wei Shizhong, Xu Liujie. Review on research progress of steel and iron wear-resistant materials[J]. Acta Metallurgica Sinica, 2020, 56(4): 523-538.
[2]杨俊平. 金属矿山球磨机衬板研究和应用进展[C]//2016(第七届)中国矿业科技大会. 2016: 216-219.
[3]Cleary P W, Owen P. Development of models relating charge shape and power draw to SAG mill operating parameters and their use in devising mill operating strategies to account for liner wear[J]. Minerals Engineering, 2018, 117: 42-62.
[4]鞠玉琳, 魏琪, 袁志钟, 等. 低合金高强钢贝/马复相回火过程硬度及微观组织的演变行为[J]. 金属学报, 2024, DOI: 10. 11900/0412. 1961. 2024. 00031.
Ju Yulin, Wei Qi, Yuan Zhizhong, et al. The hardness and microstructural evolution of the lower bainite and martensite mixtures on tempering in a high strength low alloy steel plate[J]. Acta Metallurgica Sinica, 2024, DOI: 10. 11900/0412. 1961. 2024. 00031.
[5]董欣欣, 吴静, 李梦欢, 等. 回火时间对Cr-Ni-Cu系舰船用高强钢组织及力学性能的影响[J]. 金属热处理, 2024, 49(2): 208-214.
Dong Xinxin, Wu Jing, Li Menghuan, et al. Effect of tempering time on microstructure and mechanical properties of Cr-Ni-Cu high strength steel for ships[J]. Heat Treatment of Metals, 2024, 49(2): 208-214.
[6]Du Yubin, Hu Xiaofeng, Zhang Shouqing, et al. Precipitation behavior of Cu-NiAl nanoscale particles and their effect on mechanical properties in a high strength low alloy steel[J]. Materials Characterization, 2022, 190: 112014.
[7]Yuzbekova D, Dudko V, Kniaziuk T, et al. Tempering behavior of an ultra-high-strength steel with 1.6wt% Si at low to medium temperatures[J]. Materials Science and Engineering A, 2024, 896: 146264.
[8]Jiang Jinzhe, Liu Yue, Liu Chunming. Effect of tempering temperature on the microstructure, mechanical properties and abrasive wear behavior of a new C-Cr-Mo-V alloy steel used in TBM cutter ring[J]. Journal of Materials Research and Technology, 2022, 20: 195-209.
[9]罗海文, 沈国慧. 超高强高韧化钢的研究进展和展望[J]. 金属学报, 2020, 56(4): 494-511.
Luo Haiwen, Shen Guohui. Progress and perspective of ultra-high strength steels having high toughness[J]. Acta Metallurgica Sinica, 2020, 56(4): 494-511.
[10]Li Zhifeng, He Shuai, Zhang Jugan, et al. SAG usage wear-resistant steel with rare retained austenite achieve trade-off between impact toughness and strength[J]. Journal of Materials Research and Technology, 2023, 25: 5855-5870.
[11]陈俊丹, 莫文林, 王培, 等. 回火温度对42CrMo钢冲击韧性的影响[J]. 金属学报, 2012, 48(10): 1186-1193.
Chen Jundan, Mo Wenlin, Wang Pei, et al. Effects of tempering temperature on the impact toughness of steel 42CrMo[J]. Acta Metallurgica Sinica, 2012, 48(10): 1186-1193.
[12]凌纯, 姚智颖. 结构钢的回火脆性综述[J]. 热加工工艺, 2018, 47(2): 11-14.
Ling Chun, Yao Zhiying. A summarize of tempering brittleness of structual steel[J]. Hot Working Technology, 2018, 47(2): 11-14.
[13]刘宪民, 花峰, 刘蕤, 等. 热处理对30CrMnSiNi2A钢力学性能的影响[J]. 钢铁, 2003, 38(1): 43-47.
Liu Xianmin, Hua Feng, Liu Rui, et al. Effect of heat treatment on the mechanical properties of steel 30CrMnSiNi2A[J]. Iron and Steel, 2003, 38(1): 43-47.
[14]宁静, 杨鹏, 高齐, 等. 回火温度对30Cr3Si2NiMoWNb钢组织性能的影响[J]. 金属热处理, 2022, 47(11): 95-100.
Ning Jing, Yang Peng, Gan Qi, et al. Effect of tempering temperature on microstructure and properties of 30Cr3Si2NiMoWNb steel[J]. Heat Treatment of Metals, 2022, 47(11): 95-100.
[15]郑东升, 刘丹, 罗登, 等. 回火温度对超高强钢微观组织及力学性能的影响[J]. 材料热处理学报, 2020, 41(12): 90-96.
Zheng Dongsheng, Liu Dan, Luo Deng, et al. Effect of tempering temperature on microstructure and mechanical properties of ultra-high strength steel[J]. Transactions of Materials and Heat Treatment, 2020, 41(12): 90-96.
[16]袁书强, 沈正祥, 周春华, 等. 不同热处理条件下30CrMnSiNi2A钢的组织性能研究[J]. 材料科学与工艺, 2015, 23(2): 125-128.
Yuan Shuqiang, Shen Zhengxiang, Zhou Chunhua, et al. Microstructure and property of 30CrMnSiNi2A in different heat treatment[J]. Materials Science and Technology, 2015, 23(2): 125-128.
[17]范新超, 王春旭, 厉勇, 等. 回火温度对超高强度35Cr3Ni2SiMnMoVA钢组织与性能的影响[J]. 金属热处理, 2017, 42(4): 95-98.
Fan Xinchao, Wang Chunxu, Li Yong, et al. Effect of tempering temperature on microstructure and mechanical properties of ultra high strength 35Cr3Ni2SiMnMoVA steel[J]. Heat Treatment of Metals, 2017, 42(4): 95-98.
[18]彭雯雯, 曾卫东, 康超, 等. 热处理工艺对300M超高强度钢组织和性能的影响[J]. 材料热处理学报, 2012, 33(3): 94-98.
Peng Wenwen, Zeng Weidong, Kang Chao, et al. Effect of heat treatment on microstructure and properties of 300M ultrahigh strength steel[J]. Transactions of Materials and Heat Treatment, 2012, 33(3): 94-98.