金属热处理 ›› 2021, Vol. 46 ›› Issue (10): 144-150.DOI: 10.13251/j.issn.0254-6051.2021.10.025

• 工艺研究 • 上一篇    下一篇

淬火工艺对H13E钢显微组织及力学性能的影响

艾云龙1, 刘哲1, 陈卫华1, 朱振涛2, 罗桂海3, 梁炳亮1   

  1. 1.南昌航空大学 材料科学与工程学院, 江西 南昌 330063;
    2.江西同欣机械制造股份有限公司, 江西 上饶 334000;
    3.贵州安大航空锻造有限责任公司, 贵州 安顺 561000
  • 收稿日期:2021-05-15 出版日期:2021-10-25 发布日期:2021-12-08
  • 作者简介:艾云龙(1962—),男,教授,主要研究方向为金属材料及其热处理,E-mail:ayunlong@126.com
  • 基金资助:
    国家自然科学基金 (51664043);江西省自然科学基金 (20192BAB206007)

Effect of quenching process on microstructure and mechanical properties of H13E steel

Ai Yunlong1, Liu Zhe1, Chen Weihua1, Zhu Zhentao2, Luo Guihai3, Liang Bingliang1   

  1. 1. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang Jiangxi 330063, China;
    2. Jiangxi Tongxin Machinery Manufacturing Co., Ltd., Shangrao Jiangxi 334000, China;
    3. Guizhou Anda Aviation Forging Co., Ltd., Anshun Guizhou 561000, China
  • Received:2021-05-15 Online:2021-10-25 Published:2021-12-08

摘要: H13E钢是通过调整合金元素对H13钢进行了一定的改性,研究了淬火工艺对H13E钢显微组织及力学性能的影响。结果表明:随着淬火温度的升高,奥氏体晶粒尺寸单调增加,从1020 ℃升高至1080 ℃时,平均奥氏体晶粒尺寸增长了约40 μm;硬度在1060 ℃达到最大值,为61.6 HRC,相较于传统H13钢硬度高3~5 HRC,同时冲击吸收能量可达16 J以上。当保温时间在20~50 min时,奥氏体晶粒增长速率较缓慢,平均奥氏体晶粒尺寸仅增长7 μm左右,同时硬度仅下降0.2 HRC左右。相同条件下油冷后H13E钢马氏体更细小,力学性能优于空冷后的H13E钢。考虑综合力学性能,H13E钢较佳淬火工艺为:1060 ℃保温20~30 min,油冷。

关键词: H13E钢, 淬火, 奥氏体晶粒, 显微组织, 力学性能

Abstract: Effects of quenching process on microstructure and mechanical properties of the H13E steel, a modified H13 by adjusting alloying elements, were studied. The results show that the austenite grain size increases monotonically with the increase of quenching temperature. The average austenite grain size increases by about 40 μm when the temperature is increased from 1020 ℃ to 1080 ℃. The maximum hardness is 61.6 HRC at 1060 ℃, which is 3 to 5 HRC higher than that of the traditional H13 steel, and the impact property value can be more than 16 J. When the holding time is 20-50 min, the austenite grain growth rate slows, the average austenite grain size increases by only about 7 μm, and the hardness decreases by only about 0.2 HRC. Under the same conditions, the martensite of H13E steel after oil cooling is finer, and the mechanical properties are better than those of the H13E steel after air cooling. Considering the comprehensive mechanical properties, the optimal quenching process for the H13E steel is holding at 1060 ℃ for 20-30 min, then oil cooling.

Key words: H13E steel, quenching, austenite grain, microstructure, mechanical properties

中图分类号: