金属热处理 ›› 2023, Vol. 48 ›› Issue (7): 193-196.DOI: 10.13251/j.issn.0254-6051.2023.07.033

• 工艺研究 • 上一篇    下一篇

热处理对GH4169合金组织及硬度的影响

昝斌1, 王奇2, 徐宁1, 王旭1, 吴大莉1   

  1. 1.金川镍钴研究设计院, 甘肃 金昌 737100;
    2.金川集团镍合金有限公司, 甘肃 金昌 737100
  • 收稿日期:2022-12-30 修回日期:2023-05-18 出版日期:2023-07-25 发布日期:2023-09-04
  • 作者简介:昝 斌(1982—),男,高级工程师,硕士,主要研究方向为镍、钴、铜有色金属材料加工工艺,E-mail:250996205@qq.com。
  • 基金资助:
    甘肃省科技重大专项基金项目(20ZD7GC009)

Effect of heat treatment on microstructure and hardness of GH4169 alloy

Zan Bin1, Wang Qi2, Xu Ning1, Wang Xu1, Wu Dali1   

  1. 1. Jinchuan Nickel-Cobalt Research and Design Institute, Jinchang Gansu 737100, China;
    2. Jinchuan Group Nickel Alloy Co., Ltd., Jinchang Gansu 737100, China
  • Received:2022-12-30 Revised:2023-05-18 Online:2023-07-25 Published:2023-09-04

摘要: 研究了不同固溶和时效工艺对GH4169合金组织及硬度的影响。结果表明,固溶温度为900~1000 ℃时,GH4169合金的微观组织无明显变化,硬度随固溶温度的升高略有下降。1050 ℃以上固溶时,随着固溶温度的升高和固溶时间的增加,再结晶晶粒迅速长大,同时硬度也显著下降。1100 ℃固溶45 min后再结晶完成,硬度也基本不变。时效温度和时效时间对GH4169合金中的强化相析出有显著影响,表现为硬度的显著差异,720 ℃时效16 h后GH4169合金的硬度达到最高。

关键词: GH4169合金, 固溶, 时效, 微观组织, 硬度

Abstract: Effects of different solid solution and aging processes on microstructure and hardness of GH169 alloy were studied. The results show that when the solution treatment temperature is in the range of 900-1000 ℃, the microstructure of the GH4169 alloy has no obvious change, and the hardness decreases slightly with the solution treatment temperature rising. When the solution temperature is above 1050 ℃, with the increase of solution temperature and time, the recrystallized grains grow rapidly and the hardness decreases significantly. After solution treated at 1100 ℃ for 45 min, the recrystallization is completed and the hardness is basically unchanged. The aging temperature and time have significant influence on the precipitation of strengthening phases in the GH4169 alloy, which is manifested as the significant difference in hardness. The hardness of the GH4169 alloy reaches the highest after aging at 720 ℃ for 16 h.

Key words: GH4169 alloy, solution treatment, aging, microstructure, hardness

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