金属热处理 ›› 2023, Vol. 48 ›› Issue (6): 89-94.DOI: 10.13251/j.issn.0254-6051.2023.06.016

• 工艺研究 • 上一篇    下一篇

奥氏体化温度对铬钒合金化高锰钢组织和性能的影响

闫洪涛1, 王永金2, 刘丹丹2, 齐海龙1, 杨光1, 母镕2   

  1. 1.鞍山钢铁集团有限公司 东鞍山烧结厂, 辽宁 鞍山 114000;
    2.北京科技大学 材料科学与工程学院, 北京 100083
  • 收稿日期:2022-12-30 修回日期:2023-04-20 发布日期:2023-08-11
  • 通讯作者: 王永金,讲师,博士,E-mail:wangyongjin@ustb.edu.cn
  • 作者简介:闫洪涛(1969—),男,工程师,硕士,主要研究方向为先进材料及热处理、矿山机械等,E-mail:yanhongtao1024@163.com。

Effect of austenitizing temperature on microstructure and properties of chromium and vanadium alloyed high manganese steel

Yan Hongtao1, Wang Yongjin2, Liu Dandan2, Qi Hailong1, Yang Guang1, Mu Rong2   

  1. 1. Donganshan Sintering Plant, Anshan Iron and Steel Group Co., Ltd., Anshan Liaoning 114000, China;
    2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2022-12-30 Revised:2023-04-20 Published:2023-08-11

摘要: 利用光学显微镜、扫描电镜、MLD-10型动载磨料磨损试验机等探究了奥氏体化温度对铬钒合金化高锰钢微观组织、力学性能、耐磨性能的影响。试验结果表明, 在奥氏体化温度为1070 ℃时, 由于组织中含有较多点线状碳化物, 试验钢的抗拉强度、屈服强度、硬度达到最大值, 分别为831 MPa、460 MPa、256.6 HBW, 冲击吸收能量较高, 为70.9 J, 其断裂形式为准解理断裂。在冲击磨料磨损试验过程中, 随冲击功的增大, 试验钢的耐磨性能先升高后降低, 且在较高冲击功下, 试验钢在1070 ℃奥氏体化时相较1100 ℃奥氏体化时表现出更加优异的耐磨性能。

关键词: 高锰钢, 奥氏体化温度, 显微组织, 力学性能, 耐磨性能

Abstract: Effect of austenitizing temperature on microstructure, mechanical properties, and wear resistance of chromium vanadium alloyed high manganese steel was investigated by means of optical microscope, scanning electron microscope, and MLD-10 dynamic load abrasive wear testing machine. The results show that at the austenitizing temperature of 1070 ℃, due to the presence of numerous point like carbides in the microstructure, the tensile strength, yield strength, and hardness of the tested steel reach their maximum values, which are 831 MPa, 460 MPa and 256.6 HBW, respectively. The impact absorbed energy is relatively high, reaching 70.9 J, and its fracture form is quasi cleavage fracture. During impact arrasive wear test process, as the impact energy increases, the wear resistance of the tested steel first increases and then decreases. Moreover, at higher impact energy, the tested steel exhibits better wear resistance when austenitized at 1070 ℃ compared to 1100 ℃.

Key words: high manganese steel, austenitizing temperature, microstructure, mechanical properties, wear resistance

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