金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 56-60.DOI: 10.13251/j.issn.0254-6051.2021.08.011

• 组织与性能 • 上一篇    下一篇

不同热处理条件下亚共晶高铬铸铁的组织和性能

于洪军1, 宋传颂馨2, 程福超1, 高志喆1, 陈小艳1, 王永金2, 张应超2   

  1. 1.鞍山钢铁集团有限公司 大孤山球团厂, 辽宁 鞍山 114004;
    2.北京科技大学 材料科学与工程学院, 北京 100083
  • 收稿日期:2021-03-24 出版日期:2021-08-25 发布日期:2021-12-09
  • 通讯作者: 王永金,讲师,博士,E-mail:wangyongjin@ustb.edu.cn
  • 作者简介:于洪军(1966—),男,高级工程师,主要研究方向为矿山设备与工艺,E-mail:17801063363@163.com。

Microstructure and properties of a hypoeutectic high-Cr cast iron under different heat treatment conditions

Yu Hongjun1, Song Chuansongxin2, Cheng Fuchao1, Gao Zhizhe1, Chen Xiaoyan1, Wang Yongjin2, Zhang Yingchao2   

  1. 1. Dagushan Pelleting Plant, Anshan Iron & Steel Group Co., Ltd., Anshan Liaoning 114004, China;
    2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2021-03-24 Online:2021-08-25 Published:2021-12-09

摘要: 利用光学显微镜、扫描电镜、X射线能谱仪以及力学性能测试等方法,对不同热处理条件下的亚共晶高铬铸铁进行微观结构表征以及性能测试,研究不同热处理条件对亚共晶高铬铸铁组织及性能的影响。亚共晶高铬铸铁的硬度和冲击吸收能量随淬火温度的升高和保温时间的延长先升高后下降,淬火回火后的最大硬度可达到58 HRC,最大冲击吸收能量可达到15 J。

关键词: 亚共晶高铬铸铁, 热处理, 显微组织, 硬度, 冲击性能

Abstract: Effects of different heat treatment condition on microstructure and properties of a hypoeutectic high chromium cast iron were studied by means of optical microscope, scanning electron microscope, X-ray energy dispersive spectrometer and mechanical properties test. The results show that the hardness and impact absorbed energy of the tested cast iron firstly increases and then decreases with the increase of quenching temperature and time. The maximum hardness and impact absorbed energy of the tested cast iron can reach 58 HRC and 15 J after quenching plus tempering, respectively.

Key words: hypoeutectic high chromium cast iron, heat treatment, microstructure, hardness, impact property

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