第三代航空轴承钢CSS-42L的连续冷却转变曲线

doi:10.13251/j.issn.0254-6051.2024.12.029

金属热处理 ›› 2024, Vol. 49 ›› Issue (12): 175-178.DOI: 10.13251/j.issn.0254-6051.2024.12.029

第三代航空轴承钢CSS-42L的连续冷却转变曲线

田仲杰^1,2, 张雲飞^1,2, 曹文全³, 赵英利^1,2, 王艳⁴, 白丽娟^1,2, 崔毅^1,2,3

1.河钢材料技术研究院, 河北石家庄 052165;
2.河北大河材料科技有限公司, 河北石家庄 052165;
3.钢铁研究总院有限公司特殊钢研究院, 北京 100081;
4.河钢股份有限公司, 河北石家庄 050023

收稿日期:2024-06-19 修回日期:2024-10-23 出版日期:2024-12-25 发布日期:2025-02-05
通讯作者: 崔毅,高级工程师,博士,E-mail:cuiyi@hbisco.com
作者简介:田仲杰(1997—),男,助理工程师,硕士,主要研究方向为特种轴承材料组织调控技术,E-mail:cuiyi@hbisco.com。

Continuous cooling transformation curve of the third generation aviation bearing steel CSS-42L

Tian Zhongjie^1,2, Zhang Yunfei^1,2, Cao Wenquan³, Zhao Yingli^1,2, Wang Yan⁴, Bai Lijuan^1,2, Cui Yi^1,2,3

1. HBIS Material Technology Research Institute, Shijiazhuang Hebei 052165, China;
2. Hebei Dahe Material Technology Co., Ltd., Shijiazhuang Hebei 052165, China;
3. Research Institute of Special Steel, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
4. HBIS Company Limited, Shijiazhuang Hebei 050023, China

Received:2024-06-19 Revised:2024-10-23 Online:2024-12-25 Published:2025-02-05

摘要/Abstract

摘要： 利用膨胀法在DIL805A型淬火膨胀仪对第三代航空轴承钢CSS-42L开展了临界点测定及冷却速度0.02~40 ℃/s的连续冷却转变试验,绘制了静态CCT曲线,并对室温下的显微组织以及维氏硬度进行分析。结果表明,CSS-42L钢的临界点Ac₁和Ac₃分别为655 ℃和738 ℃;连续冷却转变过程中,不同冷速下均只发生马氏体转变,随着冷却速度的降低,马氏体转变起始点降低;CSS-42L钢在冷却速度为1.6 ℃/s时,其硬度值最大为330 HV50。

关键词: CSS-42L轴承钢, 临界点, 连续冷却转变, 显微硬度

Abstract: Critical point and the continuous cooling transformation test of the third generation aviation bearing steel CSS-42L at cooling rate of 0.02-40 ℃/s were carried out by DIL805A quenching dilatometer with dilatometric method. The static CCT curve was drawn, and the microstructure and Vickers hardness at room temperature were analyzed. The results show that the critical points Ac₁ and Ac₃ of the CSS-42L steel are 655 ℃ and 738 ℃, respectively. In the process of continuous cooling, only martensitic transformation occurs at different cooling rates, and the starting temperature of martensitic transformation decreases with the decrease of cooling rate. The tested CSS-42L steel has a maximum microhardness of 330 HV50 at the cooling rate of 1.6 ℃/s.

Key words: CSS-42L bearing steel, critical point, continuous cooling transformation, microhardness

中图分类号:

TG142.1

田仲杰, 张雲飞, 曹文全, 赵英利, 王艳, 白丽娟, 崔毅. 第三代航空轴承钢CSS-42L的连续冷却转变曲线[J]. 金属热处理, 2024, 49(12): 175-178.

Tian Zhongjie, Zhang Yunfei, Cao Wenquan, Zhao Yingli, Wang Yan, Bai Lijuan, Cui Yi. Continuous cooling transformation curve of the third generation aviation bearing steel CSS-42L[J]. Heat Treatment of Metals, 2024, 49(12): 175-178.

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第三代航空轴承钢CSS-42L的连续冷却转变曲线

Continuous cooling transformation curve of the third generation aviation bearing steel CSS-42L

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