Effect of microstructure heredity and pre-heat treatment on mechanical properties  of quenched and tempered ZG25CrNiMo steel

doi:10.13251/j.issn.0254-6051.2023.12.023

Abstract

Abstract: Effect of different pre-treatments on microstructure and properties of ZG25CrNiMo steel was studied before and after quenching and tempering. The results show that the ZG25CrNiMo cast steel has coarse-grained structure heredity characteristics. A simple 890 ℃×2 h+normalizing pre-treatment has limited ability to improve the microstructure heredity. Through 950 ℃×2 h high temperature normalizing+890 ℃×2 h normalizing pre-treatment, the structural heredity characteristics can be eliminated and the austenite grains can be refined. On this double normalizing basis, another 670 ℃×6 h annealing treatment is carried out to refine the grains and also eliminate the residual internal stress. After further treatment of quenching and tempering, the tensile strength of the ZG25CrNiMo steel reaches more than 800 MPa, and the low temperature impact absorbed energy at -45 ℃ reaches more than 50 J.

Key words: ZG25CrNiMo cast steel, microstructure heredity, high temperature normalizing, annealing, quenching and tempering

CLC Number:

TG142.1⁺2

Bao Yulong, Yu Xianghua, Yin Zhuojun. Effect of microstructure heredity and pre-heat treatment on mechanical properties of quenched and tempered ZG25CrNiMo steel[J]. Heat Treatment of Metals, 2023, 48(12): 140-143.

References

[1]梁楠伟, 刘德义, 刘世程. 热处理对Q460E低合金结构钢组织与性能的影响[J]. 大连交通大学学报, 2008, 29(1): 84-88.
Liang Nanwei, Liu Deyi, Liu Shicheng. Effect of heat treatment on the microstructure and properties of low structure steel Q460E[J]. Journal of Dalian Jiaotong University, 2008, 29(1): 84-88.
[2]彭梦都, 王立民, 张希俊, 等. 回火温度对45CrMoVE钢组织与性能的影响[J]. 金属热处理, 2014, 39(10): 101-104.
Peng Mengdu, Wang Limin, Zhang Xijun, et al. Effect of tempering temperature on microstructure and properties of 45CrMoVE steel[J]. Heat Treatment of Metals, 2014, 39(10): 101-104.
[3]邹伟龙, 王毛球, 时捷, 等. 热处理对25CrNi3MoV钢组织与力学性能的影响[J]. 金属热处理, 2008, 33(7): 69-72.
Zou Weilong, Wang Maoqiu, Shi Jie, et al. Influence of heat treatment on microstructure and mechanical properties of 25CrNi3MoV steel[J]. Heat Treatment of Metals, 2008, 33(7): 69-72.
[4]牟军, 张丰, 康大韬. 大锻件组织遗传的细化工艺的比较研究[J]. 材料导报, 1995, 6(6): 25-30.
[5]赖凤彩. 低合金铸钢的低温冲击韧性与工艺参数[J]. 龙岩学院学报, 2015, 33(5): 61-66.
[6]方荣庆, 梁少波, 胡超群. 提高重载电力机车铸钢件低温冲击韧性的工作总结[J]. 铸造技术, 1993, 12(3): 22-44.
Fang Rongqing, Liang Shaobo, Hu Chaoqun. Improving the low temperature impact strength of steel casting for heavy load electric locomotive[J]. Foundry Technology, 1993, 12(3): 22-44.
[7]李伟. GOST-2车轮钢低温冲击韧性研究[J]. 物理测试, 2011, 29(5): 5-8.
Li Wei. Study on the impact toughness of GOST-2 wheel steel at low temperature[J]. Physical Test, 2011, 29(5): 5-8.
[8]安正昆. 钢铁热处理[M]. 1版. 北京: 力学工业出版社, 1990.
[9]张宇, 刘仁东, 王科强, 等. 42CrMo钢动态CCT曲线及组织转变[J]. 金属热处理, 2012, 37(12): 37-40.
Zhang Yu, Liu Rendong, Wang Keqiang, et al. Dynamic continuous cooling transformation curves and microstructure evolution of 42CrMo steel[J]. Heat Treatment of Metals, 2012, 37(12): 37-40.

[1]	Zeng Yongmou, Liu Ying, Liu Ziyuan, Hu Menghan, Cao Yu. Effect of annealing temperature and cold deformation on microstructure and properties of 3003 aluminum alloy plate for power battery shell [J]. Heat Treatment of Metals, 2023, 48(9): 70-74.
[2]	Han Weisong, Du Feng, Li Jianfeng, Zhu Baohui, Shen Lihua, Liu Yi, Wang Peng. Effect of deformation on mechanical properties of Ti80G alloy [J]. Heat Treatment of Metals, 2023, 48(9): 95-98.
[3]	Song Cao, Wang Xiaodong, Bao Xirong, Chen Lin, Tang Xuejiao. Effect of Ce on microstructure and mechanical properties of 30MnNbRE steel after quenching and tempering [J]. Heat Treatment of Metals, 2023, 48(9): 143-149.
[4]	Liu Yongzhen, Dong Lili, Liu Baozhi, Zhang Hao, Ma Yonglin. Evolution of microstructure and macrotexture of 3.1%Si oriented silicon steel [J]. Heat Treatment of Metals, 2023, 48(9): 238-241.
[5]	Kang Cong, Jiao Zhen, Mu Botao, Ren Chiqiang, Gao Wenchao, Li Wei, Yun Pengfei, Ouyang Wenbo. Effect of annealing treatment on microstructure and mechanical properties of Ti6321 alloy [J]. Heat Treatment of Metals, 2023, 48(8): 149-153.
[6]	Zhou Zeyu, Han Mingming, Xiao Xiang, Fu Jinlai. Effect of annealing process on microstructure and natural aged properties of 7X50 aluminum alloy wire [J]. Heat Treatment of Metals, 2023, 48(8): 161-165.
[7]	Liu Lei, Guo Feihu, Shi Pengzhao, Qiao Jialong, Qiu Shengtao. Effect of primary recrystallization annealing temperature on microstructure and texture of low temperature Hi-B steel [J]. Heat Treatment of Metals, 2023, 48(7): 8-14.
[8]	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.
[9]	Huang Weili, Li Hongbin, Wang Xingjuan, Chen Liansheng, Tian Yaqiang, Niu Yuewei, Chen Siping. Effect of MnS inclusion morphology on elongation of Ti-microalloyed steel after cold rolling and continuous annealing processing [J]. Heat Treatment of Metals, 2023, 48(7): 73-78.
[10]	Wang Junliang, Zhou Tiezhu, Fu Liguo, Yu Yan, Li Chunhui. Influence of stress relieving annealing on surface residual stress,microstructure and properties of B10 colomony equal diameter tee [J]. Heat Treatment of Metals, 2023, 48(7): 111-116.
[11]	Meng Yuerui, Lu Maosen, Gao Jiang, Wu Peifeng, Zhou Bowen. Practice and analysis of eliminating non-uniformity of cold rolled low carbon steel strip by U-shaped cooling process for hot rolling [J]. Heat Treatment of Metals, 2023, 48(7): 162-165.
[12]	Zhao Hulin, Gou Zanghong. Effects of cold rolling and annealing on microstructure and mechanical properties of pure nickel welded joints [J]. Heat Treatment of Metals, 2023, 48(7): 197-200.
[13]	Cheng Huiming, Liu Yongmou, Ma Wanjun. Effect of vacuum annealing on microstructure and properties of 1J50 soft magnetic alloy [J]. Heat Treatment of Metals, 2023, 48(7): 214-216.
[14]	Wang Xiaowei, Dong Yu, Wang Deyong, Yang Lixin, Li Dongkuan, Zhang An, Che Anda, Ma Siqin. Effect of annealing on microstructure and mechanical properties of TC25G titanium alloy [J]. Heat Treatment of Metals, 2023, 48(6): 74-79.
[15]	Lu Jiadong, Huang Jie, Zhang Jianlei, Yue Chongxiang. Microstructure and magnetic properties of non-oriented silicon steel for compressor motor after secondary annealing [J]. Heat Treatment of Metals, 2023, 48(6): 197-201.

Effect of microstructure heredity and pre-heat treatment on mechanical properties of quenched and tempered ZG25CrNiMo steel

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments