9激光修复成形GH4169/GH738高温合金的性能研究

杨雪坤; 王忠; 杨春蓉; 邓芝青; 王志成

doi:doi:10.14128/j.cnki.al.20234306.042

应用激光, 2023, 43 (6): 0042, 网络出版: 2024-02-02

9激光修复成形GH4169/GH738高温合金的性能研究

Study on Mechanical Properties of Laser Forming Repaired GH4169/GH738 Superalloy

论文大纲

杨雪坤 ¹王忠 ¹杨春蓉 ¹邓芝青 ¹王志成 ²

作者单位

¹ 中国航发成都发动机有限公司，四川成都 610503

² 成都凯天电子股份有限公司，四川成都 611730

摘要

采用激光修复技术和GH4169合金粉末，在GH738合金基材试块上制备激光成形修复件，对其进行固溶+双时效热处理。对试块进行了高温持久和高温低周疲劳性能试验，观察试样断口形貌并分析断裂机理。结果表明：激光修复GH4169/GH738合金的组织结合处冶金质量良好，呈现向外连续生长的柱状晶组织；在650 ℃、690 MPa下进行持久试验，修复试样晶界析出Laves相，导致裂纹的萌生，与晶界分离形成微观空洞，同时气孔促进了裂纹的扩展，为穿晶和沿晶的混合韧性断裂模式。在455 ℃下进行低周疲劳试验，发现疲劳裂纹源于表面和气孔，以河流状花样向中心扩散，拓展区存在疲劳辉纹，为解理和穿晶两种断裂模式。采用GH4169合金粉末修复可满足常规铸锻GH738合金性能要求。

Abstract

The laser forming repaired (LFR) and GH4169 superalloy powder were used to prepare laser-formed repair parts on GH738 superalloy substrate specimens, which were subjected to solution + double aging heat treatment. The specimens were subjected to high-temperature endurance and high-temperature low circumference fatigue performance tests, the fracture morphology of the specimens was observed and the fracture mechanism was analyzed. When the persistent test was conducted at 650 ℃ and 690 MPa, the Laves phase was precipitated at the grain boundaries of the repaired specimens, leading to the crack sprouting. This will be separated from the grain boundary to form microscopic cavities, while the gas porosities promote the crack expansion, as a mixed ductile fracture mode of penetration and along with the crystal. Low cycle fatigue test at 455 ℃, the fatigue cracks originated from the surface and gas porosities and spread to the center in a river-like pattern, and there were fatigue glow lines in the expansion area, which were two fracture modes of transgranular and cleavage fracture. The GH4169 superalloy powder repair can meet the conventional casting and forging of GH738 alloy.

参考文献

[1] 魏志坚, 徐文帅, 袁慧, 等. 固溶温度对GH738合金环锻件组织性能的影响研究［J］. 模具工业, 2017, 43(9): 63-67.WEI Z J, XU W S, YUAN H, et al. Effect of solution temperature on microstructure and mechanical properties of ring forgeable piece for GH738 alloy［J］. Die &Mould Industry, 2017, 43(9): 63-67.

[2] 徐凤琴, 黄福祥. 中国航空材料手册［M］. 2版. 北京: 中国标准出版社, 2002: 323-359,475-480.XU F Q, HUANG F X. China aeronautical materials handbook［M］. 2nd ed. Beijing: Standard Press of China, 2002: 341-346,475-480.

[3] 时阳, 陈智君, 张群莉, 等. 镍基高温合金表面激光熔覆Inconel738合金层的开裂行为［J］. 金属热处理, 2011, 36(3): 72-76.SHI Y, CHEN Z J, ZHANG Q L, et al. Cracking behavior of Inconel 738 alloy on Ni-base superalloy surface by laser cladding［J］. Heat Treatment of Metals, 2011, 36(3): 72-76.

[4] 黄卫东, 林鑫, 陈静. 激光立体成形: 高性能致密金属零件的快速自由成形［M］. 西安: 西北工业大学出版社, 2007: 1-20.HUANG W D, LIN X, CHEN J. Laser stereo forming: Rapid free forming of high performance compact metal parts［M］. Xi′an: Northwestern Polytechnical University Press, 2007: 1-20.

[5] 薛蕾, 卢鹏辉, 陈静, 等. 激光修复1Cr12Ni3MoVN合金的组织性能研究［J］. 中国激光, 2010, 37(3): 887-890.XUE L, LU P H, CHEN J, et al. Study on microstructure and mechanical properties of laser repaired 1Cr12Ni3MoVN alloy［J］. Chinese Journal of Lasers, 2010, 37(3): 887-890.

[6] 方周, 赵元安, 陈顺利, 等. 熔石英表面紫外损伤点的飞秒激光修复技术［J］. 中国激光, 2013, 40(4): 66-73.FANG Z, ZHAO Y A, CHEN S L, et al. Mitigation of ultraviolet laser damage on fused silica surface with femtosecond laser system［J］. Chinese Journal of Lasers, 2013, 40(4): 66-73.

[7] 徐松华, 肖阳, 李健. 直升机发动机涡轮导向器激光修复组织性能研究［J］. 光学学报, 2010, 30(8): 2311-2316.XU S H, XIAO Y, LI J. Organization property researches of the laser repair technology in the helicopter engine turbine oriented implement［J］. Acta Optica Sinica, 2010, 30(8): 2311-2316.

[8] 翟泉星. 激光沉积修复GH738合金组织与性能研究［D］. 沈阳: 沈阳航空航天大学,2018.ZHAI Q X. Study on microstructure and properties of GH738 alloy repaired by laser deposition［D］.Shenyang: Shenyang Aerospace University,2018.

[9] 明宪良, 陈静, 谭华, 等. 激光修复GH4169高温合金的持久断裂机制研究［J］. 中国激光, 2015, 42(4): 0403005.MING X L, CHEN J, TAN H, et al. Study on lasting fracture mechanism of GH4169 superalloy repaired by laser［J］. Chinese Journal of Lasers, 2015, 42(4): 0403005.

[10] 许文勇, 张利冲, 郑少辉, 等. 热等静压气氛对铸造高温合金K4169微观组织的影响［J］. 稀有金属, 2020, 44(4): 363-369.XU W Y, ZHANG L C, ZHENG S H, et al. Microstructure of cast superalloy K4169 with different HIP atmosphere［J］. Chinese Journal of Rare Metals, 2020, 44(4): 363-369.

[11] 卞宏友, 朱明昊, 李英, 等. 激光沉积修复GH536/GH738合金的组织及力学性能［J］. 中国有色金属学报, 2020, 30(3)：542-549.BIAN H Y, ZHU M H, LI Y, et al. Microstructure and mechanical properties of laser deposition repair of GH536/GH738 superalloy［J］. The Chinese Journal of Nonferrous Metals, 2020, 30(3)：542-549.

[12] KNOROVSKY G A, CIESLAK M J, HEADLEY T J, et al. INCONEL 718: A solidification diagram［J］. Metallurgical Transactions A, 1989, 20(10): 2149-2158.

[13] 赵卫卫, 林鑫, 刘奋成, 等. 热处理对激光立体成形Inconel 718高温合金组织和力学性能的影响［J］. 中国激光, 2009, 36(12): 3220-3225.ZHAO W W, LIN X, LIU F C, et al. Effect of heat treatment on microstructure and mechanical properties of laser solid forming inconel 718 superalloy［J］. Chinese Journal of Lasers, 2009, 36(12): 3220-3225.

[14] RADAVICH J F. The physical metallurgy of cast and wrought alloy 718［C］//Superalloys 718 Metallurgy and Applications (1989). ［S.l.］： TMS, 2004: 229.

[15] 左欣. 喷射成形GH738合金的低周疲劳行为［D］. 哈尔滨: 哈尔滨工业大学, 2013.ZUO X. Low cycle fatigue behavior of spray-formed GH738 alloy［D］.Harbin: Harbin Institute of Technology, 2013.

[16] ZHANG J M, GAO Z Y, ZHUANG J Y, et al. Mathematical modeling of the hot-deformation behavior of superalloy IN718［J］. Metallurgical and Materials Transactions A, 1999, 30(10): 2701-2712.

[17] ZHOU L X, BAKER T N. Effects of strain rate and temperature on deformation behaviour of IN 718 during high temperature deformation［J］. Materials Science and Engineering: A, 1994, 177(1/2): 1-9.

杨雪坤, 王忠, 杨春蓉, 邓芝青, 王志成. 9激光修复成形GH4169/GH738高温合金的性能研究[J]. 应用激光, 2023, 43(6): 0042. Yang Xuekun, Wang Zhong, Yang Chunrong, Deng Zhiqing, Wang Zhicheng. Study on Mechanical Properties of Laser Forming Repaired GH4169/GH738 Superalloy[J]. APPLIED LASER, 2023, 43(6): 0042.

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