1Cr12MoV钢锻件力学性能不合格原因分析及工艺改进

doi:10.13251/j.issn.0254-6051.2023.11.049

金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 300-304.DOI: 10.13251/j.issn.0254-6051.2023.11.049

• 测试与分析 • 上一篇

1Cr12MoV钢锻件力学性能不合格原因分析及工艺改进

李伟, 刘京, 邵洙浩, 郝红军, 唐林, 姜涛

中国航发北京航空材料研究院, 北京 100095

收稿日期:2023-07-24 修回日期:2023-10-05 出版日期:2023-11-25 发布日期:2023-12-27
作者简介:李伟(1989—),男,工程师,硕士,主要研究方向为金属材料塑性成形,E-mail:szh18811672283@163.com

Analysis of unqualified mechanical properties of 1Cr12MoV steel forgings and process improvement

Li Wei, Liu Jing, Shao Zhuhao, Hao Hongjun, Tang Lin, Jiang Tao

AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received:2023-07-24 Revised:2023-10-05 Online:2023-11-25 Published:2023-12-27

摘要/Abstract

摘要： 为研究1Cr12MoV钢锻件力学性能不合格的原因,采用化学成分分析、光学显微镜及扫描电镜等手段,对锻件的化学成分、显微组织及断口形貌展开分析。结果表明,基体组织中存在大尺寸、聚集分布的网状共晶碳化物,其等级达到了5级,不满足≤3级的要求,这也是导致力学性能不合格的主要原因。通过对模锻坯料进行自由锻拔长,增加模锻工序的变形量,并添加预备热处理工艺,改善了共晶碳化物形态和分布,力学性能满足了交付要求。

关键词: 1Cr12MoV钢, 锻件, 共晶碳化物, 变形量, 预备热处理

Abstract: In order to study the cause of unqualified mechanical testing for 1Cr12MoV steel forgings, chemical composition analysis, optical microscopy and scanning electron microscopy were used to analyze the chemical composition, microstructure and fracture morphology of the forgings. The results show that large-sized and aggregated eutectic carbides are existed in the matrix which reaches level 5 and doesn't meet the requirement of below level 3, which is the main reason for the failure of mechanical performance testing. Through elongating the forging stock by free forging, increasing the deformation during the forging process, and adding a preliminary heat treatment process, the distribution of eutectic carbides is greatly improved, and mechanical properties meet the delivery requirements.

Key words: 1Cr12MoV steel, forgings, eutectic carbide, deformation, preheat treatment

中图分类号:

TG161

李伟, 刘京, 邵洙浩, 郝红军, 唐林, 姜涛. 1Cr12MoV钢锻件力学性能不合格原因分析及工艺改进[J]. 金属热处理, 2023, 48(11): 300-304.

Li Wei, Liu Jing, Shao Zhuhao, Hao Hongjun, Tang Lin, Jiang Tao. Analysis of unqualified mechanical properties of 1Cr12MoV steel forgings and process improvement[J]. Heat Treatment of Metals, 2023, 48(11): 300-304.

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1Cr12MoV钢锻件力学性能不合格原因分析及工艺改进

Analysis of unqualified mechanical properties of 1Cr12MoV steel forgings and process improvement

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