金属热处理 ›› 2022, Vol. 47 ›› Issue (9): 103-107.DOI: 10.13251/j.issn.0254-6051.2022.09.018

• 工艺研究 • 上一篇    下一篇

球化退火等温时间对高碳H13钢组织和性能的影响

郭志凯, 连明洋, 卓兴建, 叶蕾, 曹培泽, 王超锋, 商秋月   

  1. 中铁工程装备集团有限公司, 河南 郑州 450016
  • 收稿日期:2022-04-29 修回日期:2022-07-30 发布日期:2022-10-18
  • 作者简介:郭志凯(1986—),男,高级工程师,博士,主要研究方向为地下工程装备材料工艺开发和优化,E-mail:guozhikai86@163.com

Effect of isothermal time in spheroidizing annealing on microstructure and properties of high carbon H13 steel

Guo Zhikai, Lian Mingyang, Zhuo Xingjian, Ye Lei, Cao Peize, Wang Chaofeng, Shang Qiuyue   

  1. China Railway Engineering Equipment Group Co. , Ltd. , Zhengzhou Henan 450016, China
  • Received:2022-04-29 Revised:2022-07-30 Published:2022-10-18

摘要: 采用不同的等温时间对高碳H13钢进行球化退火处理,并进行后续的淬火+回火处理,通过扫描电镜观察、硬度测试、冲击性能测试等方法,研究了等温时间对高碳H13钢组织和性能的影响。结果表明,随着等温时间的延长,淬回火处理后的高碳H13钢硬度先升高后降低,冲击性能先降低后升高,耐磨性先升高后降低。等温时间为2 h时,淬回火处理后高碳H13钢的晶界处分布较多条状和粒状碳化物,使其冲击性能下降。等温时间为3 h时,淬回火处理后高碳H13钢的晶粒内分布较多较大尺寸的粒状碳化物,使其耐磨性显著提高。等温时间为3 h时,高碳H13钢具有良好的综合性能。

关键词: 高碳H13钢, 球化退火, 等温时间, 冲击性能, 耐磨性能

Abstract: High carbon H13 steel was spheroidizing annealed with different isothermal time and then quenched and tempered. The effect of isothermal time on microstructure and properties of the high carbon H13 steel was studied by means of scanning electron microscope, hardness test and impact property test. The results show that with the increase of isothermal time, the hardness of the high carbon H13 steel after quenching and tempering increases first and then decreases, the impact property decreases first and then increases, but the wear resistance increases first and then decreases. When the isothermal time is 2 h, there are more strip and granular carbides at grain boundary of the high carbon H13 steel after quenching and tempering, which reduces its impact property. When the isothermal time is 3 h, there are more granular carbides with larger size inside the grains of high carbon H13 steel after quenching and tempering, which improves its wear resistance significantly, and offers good comprehensive properties.

Key words: high carbon H13 steel, spheroidizing annealing, isothermal time, impact property, wear resistance

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