回火温度对高强装甲钢组织与力学性能的影响

doi:10.13251/j.issn.0254-6051.2020.11.030

金属热处理 ›› 2020, Vol. 45 ›› Issue (11): 163-166.DOI: 10.13251/j.issn.0254-6051.2020.11.030

回火温度对高强装甲钢组织与力学性能的影响

陈建华, 蓝秀琼

重庆工业职业技术学院电子与物联网工程学院, 重庆 401120

收稿日期:2020-04-25 出版日期:2020-11-25 发布日期:2020-12-29
作者简介:陈建华(1974—),男,教授级高工,博士,主要研究方向为金属材料的组织与性能,E-mail:jianh_chen@163.com
基金资助:
重庆工业职业技术学院骨干人才项目(GZY2018-GGRC-06);重点科研项目(GZY201901-ZA)

Effect of tempering temperature on microstructure and mechanical properties of high-strength armor steel

Chen Jianhua, Lan Xiuqiong

Department of Electronic and Internet of Things Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China

Received:2020-04-25 Online:2020-11-25 Published:2020-12-29

摘要/Abstract

摘要： 利用光学显微镜和透射电镜(TEM)研究了PRO500高强装甲钢经淬火、回火后显微组织与力学性能的演变规律。结果表明:870 ℃淬火组织为板条马氏体,随回火温度升高,马氏体逐渐完成分解,并伴随细小的碳化物颗粒析出、聚集长大,硬度总体呈逐渐下降趋势,600 ℃回火的硬度最低达到274 HV10;试验钢400 ℃回火可获得优良的综合力学性能,此时硬度为389 HV10,抗拉强度为1710 MPa,规定塑性延伸强度为1460 MPa,断后伸长率为11.0%。

关键词: 回火温度, 高强装甲钢, 显微组织, 力学性能

Abstract: Evolution of microstructure and mechanical properties of quenched and tempered PRO500 high-strength armor steel was studied by means of optical microscopy and transmission electron microscope (TEM). The results show that the quenched microstructure at 870 ℃ is lath martensite. With the tempering temperature increasing, martensite is decomposed gradually, and the fine carbide particles are precipitated and accumulated, the overall hardness decreases gradually. Simultaneously the minimum hardness is 274 HV10 when tempered at 600 ℃. When tempered at 400 ℃, the excellent comprehensive mechanical properties are obtained with the hardness of 389 HV10, and the tensile strength, the proof strength (plastic extension) and the elongation reach 1710 MPa, 1460 MPa and 11.0%, respectively.

Key words: tempering temperature, high-strength armor steel, microstructure, mechanical properties

中图分类号:

TG156.5

陈建华, 蓝秀琼. 回火温度对高强装甲钢组织与力学性能的影响[J]. 金属热处理, 2020, 45(11): 163-166.

Chen Jianhua, Lan Xiuqiong. Effect of tempering temperature on microstructure and mechanical properties of high-strength armor steel[J]. Heat Treatment of Metals, 2020, 45(11): 163-166.

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回火温度对高强装甲钢组织与力学性能的影响

Effect of tempering temperature on microstructure and mechanical properties of high-strength armor steel

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