金属热处理 ›› 2022, Vol. 47 ›› Issue (11): 106-110.DOI: 10.13251/j.issn.0254-6051.2022.11.018

• 工艺研究 • 上一篇    下一篇

压缩量和时效制度对A286高温合金组织和性能的影响

张晓斌1, 张崔禹2, 魏亮亮1, 王丽丽1, 于茂松3, 丁燕红2, 马叙2   

  1. 1.航天精工股份有限公司 天津市紧固连接技术企业重点实验室, 天津 300300;
    2.天津理工大学 材料科学与工程学院 天津市金属材料高效近净成形技术工程中心, 天津 300384;
    3.天津海钢板材有限公司, 天津 301600
  • 收稿日期:2022-06-24 修回日期:2022-09-27 出版日期:2022-11-25 发布日期:2023-01-04
  • 通讯作者: 马叙,教授,博士,E-mail:maxumax@163.com
  • 作者简介:张晓斌(1981—),男,工程师,主要研究方向为航空航天高端紧固件产品研发,E-mail:378532116@qq.com。
  • 基金资助:
    天津市紧固连接技术企业重点实验室开放课题(HTJG-TJ-JS-2020-0017);天津市企业科技特派员项目(19JCTPJC57300)

Effects of compression and aging on microstructure and properties of A286 superalloy

Zhang Xiaobin1, Zhang Cuiyu2, Wei Liangliang1, Wang Lili1, Yu Maosong3, Ding Yanhong2, Ma Xu2   

  1. 1. Tianjin Key Laboratory of Fastening Joint Technology Enterprise, Aerospace Precision Industry Co., Ltd., Tianjin 300300, China;
    2. Tianjin Engineering Center of Near-Net Shape Forming Technology for Metallic Materials,School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;
    3. Tianjin Haigang Steel Coil Co., Ltd., Tianjin 301600, China
  • Received:2022-06-24 Revised:2022-09-27 Online:2022-11-25 Published:2023-01-04

摘要: 对经过980 ℃×2 h固溶处理后的A286合金进行压缩变形和时效处理,利用X射线衍射仪(XRD)观察相的元素成分;利用光学显微镜(OM)、扫描电镜(SEM)观察其显微组织;利用硬度计测试维氏硬度,对其性能进行比较,以验证析出相对时效后A286合金性能的影响。结果表明,相同压缩条件下,随着时效时间的增加,A286合金析出相数量不断增加,析出相种类以弥散γ′相、碳化钛和碳化铬为主;相同时效条件下,随着变形量的增加,析出相的数量也在不断增加。在680 ℃时效时,随着时效时间的延长,同一压缩量合金的硬度呈增大趋势,但增幅逐渐趋缓;经35%压缩量的合金在720 ℃时效8 h时硬度达到峰值。

关键词: A286高温合金, 压缩变形, 时效, 析出相, 硬度

Abstract: A286 alloy after solution treatment at 980 ℃ for 2 h was subjected to compression and aging treatment, and the element composition of the phase was observed by means of X-ray diffraction (XRD). Microstructure was observed by means of metallographic microscope (OM) and scanning electron microscope (SEM). Vickers hardness was measured by hardness tester, and the properties were compared to verify the effect of precipitation on properties of A286 alloy after aging. The results show that under the same compression conditions, with the increase of aging time, the number of precipitates increases, and the precipitates are mainly γ′ phase, TiC and chromium carbide. Under the same aging conditions, with the increase of deformation, the number of precipitates also increases. When aged at 680 ℃, with the increase of aging time, the hardness of the alloy with same deformation shows an increasing trend, but the increasing rate gradually slows down. The hardness of the alloy with compression of 35% reaches the peak value when aged at 720 ℃ for 8 h.

Key words: A286 superalloy, compression, aging, precipitated phase, hardness

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