Ni含量对NiAl-Cu强化40CrNi3MoV钢组织和力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.08.001

金属热处理 ›› 2023, Vol. 48 ›› Issue (8): 1-7.DOI: 10.13251/j.issn.0254-6051.2023.08.001

• 材料研究 • 下一篇

Ni含量对NiAl-Cu强化40CrNi3MoV钢组织和力学性能的影响

梁恩溥¹, 徐乐¹, 杨勇², 王毛球¹

1.钢铁研究总院有限公司特殊钢研究院, 北京 100081;
2.重庆长安望江工业集团有限公司, 重庆 404135

收稿日期:2023-02-11 修回日期:2023-06-15 出版日期:2023-08-25 发布日期:2023-10-10
通讯作者: 徐乐,正高级工程师,博士,E-mail: xule@nercast.com
作者简介:梁恩溥(1996—),男,博士研究生,主要研究方向为高强度马氏体钢的开发和氢脆敏感性,E-mail: liangenpu24@163.com。
基金资助:
农机装备材料生产应用示范平台(TC200H01X/05)

Effect of Ni content on microstructure and mechanical properties of 40CrNi3MoV steel strengthened by NiAl-Cu

Liang Enpu¹, Xu Le¹, Yang Yong², Wang Maoqiu¹

1. Research Institute of Special Steels, Central Iron and Steel Research Institute Company Limited, Beijing 100081, China;
2. Chongqing Chang'an Wangjiang Industry Group Co., Ltd., Chongqing 404135, China

Received:2023-02-11 Revised:2023-06-15 Online:2023-08-25 Published:2023-10-10

摘要/Abstract

摘要： 针对NiAl-Cu析出强化的40CrNi3MoV钢,研究了不同Ni含量对经450~650 ℃回火后的试验钢组织和力学性能的影响。采用OM表征试验钢的显微组织,利用TEM和EDS等手段表征试验钢中析出相,并通过室温拉伸和低温冲击试验测定试验钢的力学性能。结果表明,Ni含量对试验钢的显微组织没有明显影响。Ni含量的提高(3.0%~4.0%)促进了试验钢中富Cu相和NiAl相的析出,增加了纳米粒子析出的数量。Ni含量的提高使得试验钢经500 ℃回火后的抗拉强度和屈服强度分别提高了200 MPa和100 MPa。

关键词: 40CrNi3MoV钢, 回火温度, 力学性能, Ni含量, NiAl-Cu纳米复合析出

Abstract: For 40CrNi3MoV steel strengthened by NiAl-Cu precipitation, the effect of different Ni content on microstructure and mechanical properties of the tested steel tempered at 450-650 ℃ was studied. The microstructure of the tested steel was characterized by OM, the precipitates in the the tested steel were characterized by means of TEM and EDS, and the mechanical properties of the tested steel were measured by room temperature tensile and low temperature impact tests. The results show that the Ni content has no obvious effect on the microstructure of the tested steel. The increase of Ni content (3.0%-4.0%) promotes the precipitation of Cu-rich phase and NiAl phase in the tested steel, and increases the amount of nano particles. With the increase of Ni content, the tensile strength and yield strength of the tested steel tempered at 500 ℃ are increased by 200 MPa and 100 MPa, respectively.

Key words: 40CrNi3MoV steel, tempering temperature, mechanical properties, Ni content, NiAl-Cu nano composite precipitation

中图分类号:

TG142

梁恩溥, 徐乐, 杨勇, 王毛球. Ni含量对NiAl-Cu强化40CrNi3MoV钢组织和力学性能的影响[J]. 金属热处理, 2023, 48(8): 1-7.

Liang Enpu, Xu Le, Yang Yong, Wang Maoqiu. Effect of Ni content on microstructure and mechanical properties of 40CrNi3MoV steel strengthened by NiAl-Cu[J]. Heat Treatment of Metals, 2023, 48(8): 1-7.

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Ni含量对NiAl-Cu强化40CrNi3MoV钢组织和力学性能的影响

Effect of Ni content on microstructure and mechanical properties of 40CrNi3MoV steel strengthened by NiAl-Cu

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