重熔固溶处理对镍基高温合金组织与高温蠕变性能的影响

doi:10.13251/j.issn.0254-6051.2025.11.024

金属热处理 ›› 2025, Vol. 50 ›› Issue (11): 168-175.DOI: 10.13251/j.issn.0254-6051.2025.11.024

重熔固溶处理对镍基高温合金组织与高温蠕变性能的影响

潘福荣¹, 汤耀景¹, 鲍臣鹏¹, 周泰斌¹, 吴旭光¹, 叶明康¹, 应海珏¹, 岳亮²

1.国网浙江省电力有限公司温州供电公司, 浙江温州 325000;
2.浙江省科创新材料研究院, 浙江杭州 311500

收稿日期:2025-05-27 修回日期:2025-09-22 发布日期:2025-12-16
通讯作者: 岳亮,工程师,硕士,E-mail:yueliangv5@163.com
作者简介:潘福荣(1980—),男,高级工程师,硕士,主要研究方向为高温合金的热处理,E-mail:1393232144@qq.com。
基金资助:
国网浙江省电力有限公司科技项目(5211WZ230005)

Effect of remelting solution treatment on microstructure and high temperature creep rupture properties of a nickel-based superalloy

Pan Furong¹, Tang Yaojing¹, Bao Chenpeng¹, Zhou Taibin¹, Wu Xuguang¹, Ye Mingkang¹, Ying Haijue¹, Yue Liang²

1. Wenzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Wenzhou Zhejiang 325000, China;
2. Zhejiang Institute of Advanced Material Science and Innovation, Hangzhou Zhejiang 311500, China

Received:2025-05-27 Revised:2025-09-22 Published:2025-12-16

摘要/Abstract

摘要： 研究了简单固溶和重熔固溶处理对一种镍基单晶高温合金固溶+时效组织和高温蠕变性能的影响。采用扫描电镜及能谱表征了热处理后合金的枝晶偏析和γ′相的形貌特征,利用高温蠕变试验机测量了合金在1100 ℃/137 MPa下的蠕变寿命。结果表明,通过简单固溶处理后,合金仍存在较为明显的枝晶花样和微观偏析。采用高温重熔固溶处理后,枝晶花样模糊,但初熔微孔相较简单固溶后有所增加。经过不同重熔固溶处理与时效处理后的γ′相形貌因子平均值均接近1.4,γ′相的立方度好,残余元素偏析小。经含1320 ℃×2 h均匀化处理的重熔固溶处理后,合金有相对较好的高温持久性能。但重熔固溶处理导致微孔含量增加,会恶化合金的蠕变性能。

关键词: 镍基单晶高温合金, 重熔固溶处理, γ′相, 枝晶偏析, 蠕变性能

Abstract: Effect of simple solution and remelting solution treatments on the aged microstructure and high temperature creep rupture properties of a nickel-based single crystal superalloy was investigated. The dendritic segregation and morphology of the γ′ phase in the heat-treated alloy were characterized using scanning electron microscope and energy dispersive spectroscopy. The creep life of the tested alloy at 1100 ℃/137 MPa was measured using a high-temperature creep testing machine. The results show that after simple solution treatment, the alloy still exhibits a relatively obvious dendritic pattern and microsegregation. After remelting solution treatment, the dendritic pattern is blurred, but the primary melting porosity increases compared to that after simple solution treatment. The average value of Feret ratio of the γ′ phase after different remelting solution treatments and aging is close to 1.4, the cubicity of the γ′ phase is good, and the segregation of residual elements is small. After undergoing a remelting solution treatment containing a homogenization treatment at 1320 ℃ for 2 h, the alloy exhibits relatively good high temperature creep rupture properties. However, remelting solution treatment leads to an increase in microporosity content, resulting in the deterioration of the alloy's creep rupture properties.

Key words: nickel-based single crystal superalloy, remelting solution treatment, γ′ phase, dendritic segregation, creep rupture properties

中图分类号:

TG132.3

潘福荣, 汤耀景, 鲍臣鹏, 周泰斌, 吴旭光, 叶明康, 应海珏, 岳亮. 重熔固溶处理对镍基高温合金组织与高温蠕变性能的影响[J]. 金属热处理, 2025, 50(11): 168-175.

Pan Furong, Tang Yaojing, Bao Chenpeng, Zhou Taibin, Wu Xuguang, Ye Mingkang, Ying Haijue, Yue Liang. Effect of remelting solution treatment on microstructure and high temperature creep rupture properties of a nickel-based superalloy[J]. Heat Treatment of Metals, 2025, 50(11): 168-175.

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重熔固溶处理对镍基高温合金组织与高温蠕变性能的影响

Effect of remelting solution treatment on microstructure and high temperature creep rupture properties of a nickel-based superalloy

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