淬火温度对空冷贝氏体-马氏体复相耐磨钢组织性能的影响

doi:10.13251/j.issn.0254-6051.2023.03.022

金属热处理 ›› 2023, Vol. 48 ›› Issue (3): 129-134.DOI: 10.13251/j.issn.0254-6051.2023.03.022

淬火温度对空冷贝氏体-马氏体复相耐磨钢组织性能的影响

闫洪涛¹, 王永金², 齐海龙¹, 黄岩², 张科明¹, 张澣斗¹, 母镕²

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:2022-10-13 修回日期:2023-01-30 出版日期:2023-03-25 发布日期:2023-04-25
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 quenching temperature on microstructure and properties of air-cooled bainite-martensite multiphase wear-resistant steel

Yan Hongtao¹, Wang Yongjin², Qi Hailong¹, Huang Yan², Zhang Keming¹, Zhang Huandou¹, Mu Rong²

1. Dong'anshan Sintering Plant, Anshan Iron and Steel Group Company Limited, Anshan Liaoning 114000, China;
2. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2022-10-13 Revised:2023-01-30 Online:2023-03-25 Published:2023-04-25

摘要/Abstract

摘要： 设计了一种空冷贝氏体-马氏体复相耐磨铸钢的成分并进行冶炼浇注与热处理。通过力学性能测试、显微组织及断口形貌观察、X射线衍射分析等方法,研究淬火温度对组织和性能的影响。结果表明,经900 ℃淬火1 h后空冷至室温,随后在300 ℃回火2 h并空冷至室温,获得了综合力学性能最佳的贝氏体-马氏体复相耐磨铸钢,抗拉强度1729 MPa,断后伸长率4.3%,布氏硬度为454 HBW,V型缺口冲击吸收能量为19.31 J。其组织中含有10%左右的残留奥氏体,能够提高基体强韧性。

关键词: 复相耐磨钢, 淬火温度, 力学性能, 断口形貌, 残留奥氏体

Abstract: An air-cooling bainite-martensite multiphase wear-resistant cast steel was designed, smelted, poured and heat treated. The effect of quenching temperature on microstructure and properties were studied by means of mechanical properties test, microstructure and fracture morphology observation, and X-ray diffraction analysis. The results show that after quenching at 900 ℃ for 1 h, air-cooling to room temperature, and then tempering at 300 ℃ for 2 h, and air-cooling to room temperature, the bainite-martensite multiphase wear-resistant cast steel with the best comprehensive mechanical properties is obtained, of which the tensile strength is 1729 MPa, elongation after fracture is 4.3%, Brinell hardness is 454 HBW, and V-notch impact absorbed energy is 19.31 J. Its microstructure contains about 10% retained austenite, which can improve the strength and toughness of the matrix.

Key words: multiphase wear-resistant steel, quenching temperature, mechanical properties, fracture morphology, retained austenite

中图分类号:

TG162.9

闫洪涛, 王永金, 齐海龙, 黄岩, 张科明, 张澣斗, 母镕. 淬火温度对空冷贝氏体-马氏体复相耐磨钢组织性能的影响[J]. 金属热处理, 2023, 48(3): 129-134.

Yan Hongtao, Wang Yongjin, Qi Hailong, Huang Yan, Zhang Keming, Zhang Huandou, Mu Rong. Effect of quenching temperature on microstructure and properties of air-cooled bainite-martensite multiphase wear-resistant steel[J]. Heat Treatment of Metals, 2023, 48(3): 129-134.

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淬火温度对空冷贝氏体-马氏体复相耐磨钢组织性能的影响

Effect of quenching temperature on microstructure and properties of air-cooled bainite-martensite multiphase wear-resistant steel

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