水-空交替循环控时淬火对低合金钢组织与性能的影响

doi:10.13251/j.issn.0254-6051.2024.11.023

金属热处理 ›› 2024, Vol. 49 ›› Issue (11): 155-160.DOI: 10.13251/j.issn.0254-6051.2024.11.023

水-空交替循环控时淬火对低合金钢组织与性能的影响

王川杰, 程军, 胡宇, 赵凌波, 赵胜培

内蒙古科技大学稀土产业学院轻稀土资源绿色提取与高效利用教育部重点实验室, 内蒙古包头 014010

收稿日期:2024-06-14 修回日期:2024-09-13 出版日期:2024-11-25 发布日期:2025-01-09
通讯作者: 程军,副教授,博士,E-mail:chj6966813@sohu.com
作者简介:王川杰(1997—),男,硕士研究生,主要研究方向为金属热处理工艺,E-mail:2686200826@qq.com。
基金资助:
内蒙古自治区科技计划(2020GG0154)

Effect of water-air alternately timed quenching on microstructure and properties of low alloy steel

Wang Chuanjie, Cheng Jun, Hu Yu, Zhao Lingbo, Zhao Shengpei

Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources, Ministry of Education, School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China

Received:2024-06-14 Revised:2024-09-13 Online:2024-11-25 Published:2025-01-09

摘要/Abstract

摘要： 针对低合金耐磨钢ZG30CrMnSiMoVTi经淬火-配分(Q-P)处理后组织分布不均匀的问题,采用水-空交替循环控时淬火(ATQ)工艺进行热处理,通过模拟计算分析了不同条件下试验钢的冷却曲线,确定了ATQ处理工艺细节。借助OM、SEM、EDS、洛氏硬度计、冲击试验机和拉伸试验机对不同循环次数下ATQ处理试验钢的微观组织和力学性能进行了研究。结果表明,经过ATQ处理的试验钢中出现了大量的马氏体和少量的贝氏体组织。经过ATQ循环3次的试验钢的组织分布最为均匀,贝氏体含量最多,而且力学性能最优。ATQ循环3次的试验钢的平均洛氏硬度为46.45 HRC,冲击吸收能量为29.1 J,抗拉强度为1551.69 MPa,屈服强度为1293.07 MPa,断后伸长率为12.6%。

关键词: 水-空交替控时淬火, 低合金耐磨钢, 组织, 性能

Abstract: To address the issue of uneven microstructure distribution in low alloy wear-resistant ZG30CrMnSiMoVTi steel after quenching and partitioning (Q-P), the water-air alternately timed quenching (ATQ) process was adopted. The cooling curves of the tested steel under different conditions were simulated and analyzed to determine the details of the ATQ process. The microstructure and mechanical properties of the tested steel after ATQ for different cycles were studied by means of optical microscope (OM), scanning electron microscope (SEM), energy-dispersive spectroscopy (EDS), Rockwell hardness tester, impact testing machine and tensile testing machine. The results indicate that a large amount of martensite and a small amount of bainite structure appear in the tested steel ATQ treated. Among all the tested steels, the one ATQ treated thrice has the most uniform microstructure distribution, the highest bainite content and the best mechanical properties, with the average Rockwell hardness of 46.45 HRC, impact absorbed energy of 29.1 J, tensile strength of 1551.69 MPa, yield strength of 1293.07 MPa and elongation after fracture of 12.6%.

Key words: water-air alternately timed quenching, low alloy wear-resistant steel, microstructure, properties

中图分类号:

TG156.3

王川杰, 程军, 胡宇, 赵凌波, 赵胜培. 水-空交替循环控时淬火对低合金钢组织与性能的影响[J]. 金属热处理, 2024, 49(11): 155-160.

Wang Chuanjie, Cheng Jun, Hu Yu, Zhao Lingbo, Zhao Shengpei. Effect of water-air alternately timed quenching on microstructure and properties of low alloy steel[J]. Heat Treatment of Metals, 2024, 49(11): 155-160.

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水-空交替循环控时淬火对低合金钢组织与性能的影响

Effect of water-air alternately timed quenching on microstructure and properties of low alloy steel

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