Ni含量对A330M超高强度钢组织性能的影响

doi:10.13251/j.issn.0254-6051.2023.11.007

金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 45-49.DOI: 10.13251/j.issn.0254-6051.2023.11.007

Ni含量对A330M超高强度钢组织性能的影响

肖凯¹, 韩顺², 许忠智², 耿如明², 夏慧敏¹, 徐正伟¹, 厉勇², 王春旭²

1.中国商用飞机有限责任公司上海飞机设计研究院, 上海 200232;
2.钢铁研究总院有限公司特殊钢研究院, 北京 100081

收稿日期:2023-08-28 修回日期:2023-10-05 出版日期:2023-11-25 发布日期:2023-12-27
通讯作者: 韩顺,高级工程师,E-mail:hanshunfa@126.com
作者简介:肖凯(1982—),男,高级工程师,主要研究方向为民机超高强度钢工程研究与应用,E-mail:xiaokai@comac.cc。
基金资助:
国家重点研发计划(2022YFB3705204)

Effect of Ni content on microstructure and properties of A330M ultra-high strength steel

Xiao Kai¹, Han Shun², Xu Zhongzhi², Geng Ruming², Xia Huimin¹, Xu Zhengwei¹, Li Yong², Wang Chunxu²

1. Shanghai Aircraft Design and Research Institute, Commercial Aircraft Corporation of China, Ltd., Shanghai 200232, China;
2. Research Institute of Special Steels, Central Iron and Steel Research Institute Company Limited, Beijing 100081, China

Received:2023-08-28 Revised:2023-10-05 Online:2023-11-25 Published:2023-12-27

摘要/Abstract

摘要： 采用扫描电镜、透射电镜和力学性能分析等试验方法,研究了1.85%、3.85%、5.00%Ni含量对A330M超高强度钢微观组织及力学性能的影响规律。结果表明,不同Ni含量的试验钢淬火+低温回火后的微观组织主要由板条马氏体、残留奥氏体及ε碳化物组成,在1.85%~5.00%的Ni含量范围内,随着Ni含量的增加,试验钢的Ms点逐渐降低,组织中的残留奥氏体含量逐渐增加;其抗拉强度和屈服强度随着Ni含量的增加不断降低,冲击吸收能量则升高显著,冲击断口韧窝比例不断增加。对3种Ni含量的A330M钢的强韧性进行比较,3.85%的Ni含量可以获得最佳的强韧性匹配,抗拉强度为2207 MPa,冲击吸收能量为34 J。

关键词: Ni含量, 超高强度钢, Ms点, 微观组织, 力学性能

Abstract: Influence of Ni content (1.85%, 3.85%, 5.00%) on microstructure and mechanical properties of A330M ultra-high strength steel was studied by means of scanning electron microscope, transmission electron microscope and mechanical properties test. The results show that the microstructure of the tested steel after quenching and tempering at low temperature is mainly composed of lath martensite, retained austenite and ε carbide. In the range of 1.85%-5.00% Ni content, the Ms point of the tested steel gradually decreases with the increase of Ni content, and the content of retained austenite in the structure gradually increases. The tensile strength and yield strength decrease with the increase of Ni content, the impact absorbed energy increases significantly, and the proportion of impact fracture dimples increases. Comparing the strength and toughness of the A330M steel with three kinds of Ni content, 3.85% Ni content can obtain the best strength and toughness matching, tensile strength is 2207 MPa, impact absorbed energy is 34 J.

Key words: Ni content, ultra-high strength steel, Ms point, microstructure, mechanical properties

中图分类号:

TG142.1

肖凯, 韩顺, 许忠智, 耿如明, 夏慧敏, 徐正伟, 厉勇, 王春旭. Ni含量对A330M超高强度钢组织性能的影响[J]. 金属热处理, 2023, 48(11): 45-49.

Xiao Kai, Han Shun, Xu Zhongzhi, Geng Ruming, Xia Huimin, Xu Zhengwei, Li Yong, Wang Chunxu. Effect of Ni content on microstructure and properties of A330M ultra-high strength steel[J]. Heat Treatment of Metals, 2023, 48(11): 45-49.

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Ni含量对A330M超高强度钢组织性能的影响

Effect of Ni content on microstructure and properties of A330M ultra-high strength steel

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