奥氏体化温度对含硼钢淬透性的影响

doi:10.13251/j.issn.0254-6051.2025.09.021

金属热处理 ›› 2025, Vol. 50 ›› Issue (9): 140-145.DOI: 10.13251/j.issn.0254-6051.2025.09.021

奥氏体化温度对含硼钢淬透性的影响

刘浩楠^1,2, 徐东^1,3, 史胡生¹, 杨风国², 张晓洋², 郑冰^1,4

1.河北工程大学河北省高品质冷镦钢技术创新中心, 河北邯郸 056038;
2.河北太行钢铁集团有限公司河北省高校高端紧固件全流程应用技术研发中心, 河北邯郸 056305;
3.介子科技(河北)有限公司, 河北邯郸 056000;
4.河北普阳钢铁集团河北省高韧性风塔钢工程研究中心, 河北邯郸 056305

收稿日期:2025-04-09 修回日期:2025-07-15 出版日期:2025-09-25 发布日期:2025-10-13
通讯作者: 徐东,教授,博士,E-mail: xudong_xyz@163.com
作者简介:刘浩楠(2000—),男,硕士研究生,主要研究方向为高强含钛冷镦钢的热处理,E-mail: 1460029682@qq.com。
基金资助:
国家自然科学基金(52404352);河北省中央引导地方科技发展资金(246Z1009G,254Z1010G);河北省基础研究计划概念验证项目(E2024402143)

Effect of austenitizing temperature on hardenability of boron-containing steel

Liu Haonan^1,2, Xu Dong^1,3, Shi Husheng¹, Yang Fengguo², Zhang Xiaoyang², Zheng Bing^1,4

1. Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hebei University of Engineering, Handan Hebei 056038, China;
2. Whole Processes of High Quality Fastener Application Technology Research Center of Universities in Hebei Province, Hebei Taihang Iron and Steel Group Co., Ltd., Handan Hebei 056305, China;
3. Meson Technology (Hebei) Co., Ltd., Handan Hebei 056000, China;
4. Technology Innovation Center for Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province, Hebei Puyang Iron and Steel Group, Handan Hebei 056305, China

Received:2025-04-09 Revised:2025-07-15 Online:2025-09-25 Published:2025-10-13

摘要/Abstract

摘要： 以20MnTiB钢与10B21钢为研究对象,研究了奥氏体化温度(850~1000 ℃)对硼钢淬透性的影响。结果表明,随着奥氏体化温度的升高,晶粒尺寸逐渐增大;20MnTiB钢和10B21钢的淬透性先增至峰值再降低后回升,最佳奥氏体化温度分别为900 ℃和925 ℃;奥氏体平均晶粒尺寸逐渐增大,对硼钢淬透性具有促进作用,但超过峰值奥氏体化温度后钢中的自由硼在晶界转变为硼相沉淀,淬透性逐渐下降,达到20MnTiB钢与10B21钢的奥氏体粗化温度1000、950 ℃后,硼钢的淬透性会再次提升,但不会超过峰值。

关键词: 含硼钢, 淬透性, 晶粒尺寸, 奥氏体化温度, 粗化温度

Abstract: Using 20MnTiB steel and 10B21 steel as research subjects, the effect of austenitizing temperature (850-1000 ℃) on the hardenability of boron steel were studied. The results show that as the austenitizing temperature increases, the grain size gradually increases. The hardenability of both 20MnTiB steel and 10B21 steel first increases to a peak, then decreases, and subsequently increases again, with optimal austenitizing temperatures identified as 900 ℃ and 925 ℃, respectively. The increase in the average austenite grain size enhances the hardenability of the boron steel. However, upon exceeding the peak austenitizing temperature, free boron in the steel transforms into boron phase precipitates at the grain boundaries, causing the hardenability to gradually decrease. After reaching the austenite coarsening temperatures of 1000 ℃ for the 20MnTiB steel and 950 ℃ for the 10B21 steel, the hardenability of the boron steel increases again, but does not exceed the peak value.

Key words: boron-containing steel, hardenability, grain size, austenitising temperature, roughening temperature

中图分类号:

TG142.1

刘浩楠, 徐东, 史胡生, 杨风国, 张晓洋, 郑冰. 奥氏体化温度对含硼钢淬透性的影响[J]. 金属热处理, 2025, 50(9): 140-145.

Liu Haonan, Xu Dong, Shi Husheng, Yang Fengguo, Zhang Xiaoyang, Zheng Bing. Effect of austenitizing temperature on hardenability of boron-containing steel[J]. Heat Treatment of Metals, 2025, 50(9): 140-145.

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奥氏体化温度对含硼钢淬透性的影响

Effect of austenitizing temperature on hardenability of boron-containing steel

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