Effect of tempering temperature on microstructure and properties of 1100 MPa grade high-strength steel

doi:10.13251/j.issn.0254-6051.2022.04.023

Abstract

Abstract: Microstructure and mechanical properties of 1100 MPa grade high-strength steel after water quenching at 920 ℃ and tempering at different temperatures were studied. The results show that when the tempering temperature is 250 ℃, the tested steel obtains the optimum mechanical properties, the tensile strength, yield strength, hardness, elongation after fracture and impact absorbed energy are 1423 MPa, 1220 MPa, 446 HV5, 14.2% and 56 J, respectively. With the increase of tempering temperature, the tensile strength, yield strength and hardness show a downward trend as a whole, and the impact absorbed energy first decreases and then increases. When the tempering temperature is 150 ℃, the microstructure is composed of tempered martensite and slender rod-shape precipitated ε carbides. After the tempering temperature rises to 250 ℃, the martensite laths are slightly coarsened, and the ε carbides grow up. With further increase of tempering temperature, the lath martensite gradually transforms to equiaxed ferrite, the ε carbides also transform to cementite and gradually spheroidize and coarsen.

Key words: high-strength steel for construction machinery, tempering temperature, microstructure, mechanical properties

CLC Number:

TG156.5

Wang Qi, Wu Guangliang. Effect of tempering temperature on microstructure and properties of 1100 MPa grade high-strength steel[J]. Heat Treatment of Metals, 2022, 47(4): 146-150.

References

[1]陈付红, 丁伟, 黄维, 等. 国外先进公司工程机械用高强钢发展现状[J]. 上海金属, 2015, 37(1): 47-51.
Chen Fuhong, Ding Wei, Huang Wei, et al. Development status of foreign high strength steel for engineering machinery[J]. Shanghai Metals, 2015, 37(1): 47-51.
[2]楚觉非, 方松, 邓想涛, 等. 工程机械用高强度结构用钢研究进展[J]. 江西冶金, 2013, 33(3): 4-7.
Chu Juefei, Fang Song, Deng Xiangtao, et al. Recent research advances of high strength structures steels for construction machine[J]. Jiangxi Metallurgy, 2013, 33(3): 4-7.
[3]张月新. 工程机械用钢的发展[J]. 钢铁研究, 1990(2): 65-70.
[4]Lee W S, Su T T. Mechanical properties and microstructural features of AISI 4340 high-strength alloy steel under quenched and tempered conditions[J]. Journal of Materials Processing Technology, 1999, 87(1/3): 198-206.
[5]王蒲, 石增敏, 张允题, 等. 22SiMn2TiB钢淬火与回火过程中的组织演变[J]. 钢铁研究学报, 2016, 28(2): 45-50.
Wang Pu, Shi Zengmin, Zhang Yunti, et al. Evolution of microstructure of 22SiMn2TiB steel during quenching-tempering process[J]. Journal of Iron and Steel Research, 2016, 28(2): 45-50.
[6]Han D N, Zhang Y, Fang W, et al. Influence of tempering process on mechanical properties of 00Cr13Ni4Mo supermartensitic stainless steel[J]. Journal of Iron and Steel Research(International), 2010, 17(8): 50-54.
[7]Krauss G. Steel Processing, Structure, and Performance[M]. ASM International, 2005.
[8]甄维静, 陈俊东, 李永亮, 等. 退火工艺对1180 MPa级双相钢显微组织和力学性能的影响[J]. 钢铁钒钛, 2020, 41(4): 145-149.
Zhen Weijing, Chen Jundong, Li Yongliang, et al. Effect of annealing process on microstructure and mechanical properties of 1180 MPa dual phase steel[J]. Iron Steel Vanadium Titanium, 2020, 41(4): 145-149.
[9]宋维锡. 金属学[M]. 北京: 冶金工业出版社, 1980.
[10]褚幼义. 低合金钢的韧化原理[J]. 材料科学与工程学报, 1986(3): 12-20.
[11]Nam W J, Chong S L, Ban D Y. Effects of alloy additions and tempering temperature on the sag resistance of Si-Cr spring steels[J]. Materials Science and Engineering A, 2000, 289(1/2): 8-17.
[12]Abdollah-Zadeh A, Jafari-Pirlari A, Barzegari M. Tempered martensite embrittlement in a 32NiCrMoV125 steel[J]. Journal of Materials Engineering and Performance, 2005, 14(5): 569-573.

[1]	Wang Yudai, Liu Yang, Zhu Yanyan, Tian Xiangjun, Cheng Xu, Ran Xianzhe, Qian Tingting. Effect of heat treatment on microstructure homogeneity and tensile properties of hybrid fabricated AerMet100 ultra-high strength steel [J]. Heat Treatment of Metals, 2022, 47(4): 1-9.
[2]	Zhang Ziyan, Chen Jun, Chen Xiaoya, Li Quan'an, Liu Jianxin. Effect of solution and aging treatment on microstructure and corrosion resistance of Mg-4Sm-3Gd-0.5Zr alloy [J]. Heat Treatment of Metals, 2022, 47(4): 10-16.
[3]	Liang Enpu, Xu Le, Yang Yong, Wang Maoqiu. Effects of Al and Cu additions on microstructure and mechanical properties of 40CrNi3MoV steel [J]. Heat Treatment of Metals, 2022, 47(4): 17-23.
[4]	Qi Xiaoliang, Li Yan, Ding Wei, Zhao Zengwu. Effect of original microstructure of medium manganese TRIP steel containing Al on microstructure and mechanical properties after intercritical annealing [J]. Heat Treatment of Metals, 2022, 47(4): 24-29.
[5]	Chen Baoan, Zhang Jingyuan, Zhu Zhixiang, Han Yu, Pan Xuedong, Zhang Lei, Chen Suhong. Effect of chemical composition on microstructure and properties of high strength Al-Mg-Si alloy [J]. Heat Treatment of Metals, 2022, 47(4): 30-38.
[6]	Chen Dongjun, Li Guangyang, Liu Gang. Effect of aging treatment on microstructure and mechanical properties of AlSi9Cu3 HPDC aluminum alloy [J]. Heat Treatment of Metals, 2022, 47(4): 53-56.
[7]	Chen Liansheng, Zhang Luyou, Tian Yaqiang, Yang Zixuan, Li Hongbin, Pan Hongbo, Wei Yingli. CCT curves and microstructure and properties of low-carbon high strength marine steel [J]. Heat Treatment of Metals, 2022, 47(4): 63-68.
[8]	Jia Changyuan, Huo Yuanming, He Tao, Huo Cunlong, Liu Keran. High temperature tensile deformation behavior and microstructure evolution law of 40CrNiMo steel [J]. Heat Treatment of Metals, 2022, 47(4): 69-74.
[9]	Wang Yunlong, Yu Wei, Zhang Yi, Shi Jiaxin, Li Minghui. Effect of austenitizing temperature on isothermal transformation and mechanical properties of bainite steel [J]. Heat Treatment of Metals, 2022, 47(4): 80-85.
[10]	Liu Liyan, Bi Wenzhen, Wei Xicheng. Effect of Mn element on microstructure evolution of galvanized coating of hot stamping steel [J]. Heat Treatment of Metals, 2022, 47(4): 93-99.
[11]	Luo Zaibin, Fan Zize, Peng Zhen. Research progress of light-weight high-entropy alloys [J]. Heat Treatment of Metals, 2022, 47(4): 100-107.
[12]	Fu Xibin, Chen Zihao, Zhang Ke, Zhao Shiyu, Sun Xinjun, Zhu Zhenghai, Liang Xiaokai, Yong Qilong. Effect of quenching temperature on microstructure and mechanical properties of high Ti low alloy wear-resistant steel [J]. Heat Treatment of Metals, 2022, 47(4): 122-127.
[13]	Su Pengji, Ma Yonglin, Dong Lili, Yang Xuefeng. Effect of magnetic field pre-annealing on microstructure and texture of CGO steel [J]. Heat Treatment of Metals, 2022, 47(4): 128-132.
[14]	Li Li, Zeng Yan, Wu Xiaochun. Heat treatment process optimization for 4Cr5Mo2VCo steel [J]. Heat Treatment of Metals, 2022, 47(4): 133-140.
[15]	Lü Jiesheng, Song Zhigang, He Jianguo, Feng Han, Zheng Wenjie, Zhu Yuliang. Microstructure transformation and strengthening-plasticization mechanism of S32205 duplex stainless steel after cold rolling and annealing [J]. Heat Treatment of Metals, 2022, 47(4): 141-145.