金属热处理 ›› 2025, Vol. 50 ›› Issue (11): 176-183.DOI: 10.13251/j.issn.0254-6051.2025.11.025

• 工艺研究 • 上一篇    下一篇

淬火温度对盾构机刀圈用新型H13B钢组织与性能的影响

屈子航, 张凯文, 李云杰, 康健, 袁国   

  1. 东北大学 数字钢铁全国重点实验室, 辽宁 沈阳 110819
  • 收稿日期:2025-07-29 修回日期:2025-09-01 发布日期:2025-12-16
  • 通讯作者: 李云杰,教授,博士,E-mail:liyunjie@ral.neu.edu.cn
  • 作者简介:屈子航(1999—),男,博士研究生,主要研究方向为盾构机刀圈材料和超高强钢材料研发,E-mail:q117private@163.com。

Effect of quenching temperature on microstructure and properties of novel H13B steel for TBM cutter rings

Qu Zihang, Zhang Kaiwen, Li Yunjie, Kang Jian, Yuan Guo   

  1. State Key Laboratory of Digital Steel, Northeastern University, Shenyang Liaoning 110819, China
  • Received:2025-07-29 Revised:2025-09-01 Published:2025-12-16

摘要: 为改善盾构机刀圈材料的综合力学性能,基于H13热作模具钢成分开发了新型H13B钢,对其进行不同温度(1040~1080 ℃)淬火及两次回火处理。利用宏观硬度计、摆锤冲击试验机、光学显微镜、扫描电镜和电子背散射衍射研究了淬火温度对H13B钢组织与性能的影响。结果表明,随着淬火温度的升高,回火态H13B钢的硬度逐渐升高,未溶碳化物数量减少,原奥氏体晶粒长大,冲击过程中的峰值载荷、裂纹萌生能和裂纹扩展能均有所下降,淬火温度升至1080 ℃时,冲击吸收能量显著降低。淬火温度为1060 ℃时H13B钢的综合力学性能最优,获得最小的马氏体面积加权平均晶粒尺寸1.93 μm。再经两次回火后,硬度为57.0 HRC,冲击吸收能量达到14.3 J。

关键词: 盾构机刀圈, H13B钢, 淬火, 原奥氏体, 马氏体, 力学性能

Abstract: To improve the comprehensive mechanical properties of tunnel boring machine cutter ring material, a novel H13B steel was developed based on the composition of H13 hot-work die steel. Quenching at different temperatures (1040-1080 ℃) followed by double tempering treatment was carried out on the steel. The effect of quenching temperature on microstructure and properties of the H13B steel was investigated by using macro-hardness tester, pendulum impact testing machine, optical microscope (OM), scanning electron microscope (SEM), and electron backscatter diffraction (EBSD). The results show that with the increase of quenching temperature, the hardness of the tempered H13B steel gradually increases, the number of undissolved carbides decreases, and the prior austenite grains grow. Meanwhile, the peak load, crack initiation energy and crack propagation energy during impact process all decrease. When the quenching temperature rises to 1080 ℃, the impact absorbed energy decreases significantly. Quenched at 1060 ℃, the comprehensive mechanical properties of the H13B steel is optimal, with the minimum martensite area-weighted average grain size of 1.93 μm. Followed by double tempering, the hardness reaches 57.0 HRC and the impact absorbed energy reaches 14.3 J.

Key words: tunnel boring machine cutter ring, H13B steel, quenching, prior austenite, martensite, mechanical properties

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