金属热处理 ›› 2020, Vol. 45 ›› Issue (2): 189-192.DOI: 10.13251/j.issn.0254-6051.2020.02.036

• 工艺研究 • 上一篇    下一篇

真空高压气淬D406A钢的淬透性

吕超君, 唐丽娜, 任伟, 王健波, 张天德   

  1. 上海航天设备制造总厂有限公司, 上海 200245
  • 收稿日期:2019-08-22 出版日期:2020-02-25 发布日期:2020-04-03
  • 通讯作者: 唐丽娜(1984—),女,高级工程师,博士,主要从事先进热处理技术研究,发表论文20余篇,联系电话:021-24187249,E-mail:linatang149@163.com
  • 作者简介:吕超君(1984—),女,工程师,硕士,主要从事超高强度钢、铝合金热处理工艺研究,发表论文2篇,联系电话:021-24187403。
  • 基金资助:

    中国航天科技集团公司共性工艺项目

Hardenability of D406A steel after vacuum high-pressure gas quenching

Lü Chaojun, Tang Lina, Ren Wei, Wang Jianbo, Zhang Tiande   

  1. Shanghai Aerospace Equipments Manufacturer Co., Ltd., Shanghai 200245, China
  • Received:2019-08-22 Online:2020-02-25 Published:2020-04-03

摘要:

研究了不同气淬压力对D406A钢力学性能、淬透性、显微组织的影响。研究表明,随气淬压力增大,D406A钢淬透深度增加,5bar气淬压力下,能淬透ø20mm的D406A钢圆棒,1.5bar气淬条件下,能淬透ø10mm的D406A钢圆棒。气淬试样力学性能均能满足相关标准要求,显微组织为均匀的板条马氏体。

关键词: D406A钢, 真空高压气淬, 力学性能, 淬透性, 显微组织

Abstract:

Effects of different gas pressure on mechanical properties, hardenability and microstructure of D406A steel were studied. The results show that the hardened depth of D406A steel increases with the increase of gas quenching pressure, the ø20 mm round D406A steel can be hardened fully when gas quenched under 5 bar pressure, and the ø10 mm round D406A steel can be hardened fully when gas quenched under 1.5 bar pressure. Mechanical properties of specimens quenched by gas can meet the standard requirements, and the microstructure is composed of uniform lath martensite.

Key words: D406A steel, vacuum high-pressure gas quenching, mechanical properties, hardenability, microstructure

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