杨成斌,李振团,曲敬龙,唐超,侯为学,荣义

• 1:北京钢研高纳科技股份有限公司
• 2:四川钢研高纳锻造有限责任公司

摘要(Abstract)：

采用光学显微镜和扫描电镜研究了650和700℃长期时效对GH4738合金组织以及γ′相的影响，并测试了其长期时效后的室温、高温、冲击及持久性能。结果表明：650℃时效时，随着时效时间增加，合金的室温、高温强度变化较小，持久断裂时间先降低后增加；700℃时效时，室温、高温强度以及持久断裂时间随着时效时间增加逐渐降低；650和700℃长时时效时合金的冲击性能变化较小，晶粒尺寸、γ′相形貌变化也较小，但随着时效时间增加，二次γ′相尺寸逐渐增大、含量逐渐降低；通过建立不同时效温度和时效时间条件下的强化模型，揭示了长期时效过程中一次γ′相对合金的强度影响较小，基体强度以及持久断裂时间的降低主要源于二次γ′相的粗化、溶解。

关键词(KeyWords)： GH4738合金;长期时效;组织稳定性;力学性能

Abstract:

Keywords:

基金项目(Foundation): “科技部重大专项”(2021YFB3700403)

作者(Author): 杨成斌,李振团,曲敬龙,唐超,侯为学,荣义

DOI: 10.13289/j.issn.1009-6264.2024-0098

参考文献(References)：

• [1] 马亚芬，李育升，张麦仓，等.大尺寸优质GH4738合金的元素偏析规律及均匀化工艺[J].材料热处理学报，2023,44(6):81-88.MA Ya-fen,LI Yu-sheng,ZHANG Mai-cang,et al.Element segregation and homogenization process of large size and high quality GH4738 alloy ingot[J].Transactions of Materials and Heat Treatment,2023,44(6):81-88.
• [2] 江河，佴启亮，徐超，等.镍基高温合金疲劳裂纹急速扩展敏感温度及成因[J].金属学报，2023,59(9):1190-1200.JIANG He,NAI Qi-liang,XU Chao,et al.Sensitive temperature and reason of rapid fatigue crack propagation in nickel-based superalloy[J].Acta Metallurgica Sinica,2023,59(9):1190-1200.
• [3] 李浩宇，董建新，李林翰.GH4738合金均匀化过程组织演变及热变形行为[J].材料热处理学报，2017,38(3):61-69.LI Hao-yu,DONG Jian-xin,LI Lin-han.Evolution of microstructure and hot deformation behavior of GH4738 alloy during homogenization[J].Transactions of Materials and Heat Treatment,2017,38(3):61-69.
• [4] Han Y Z,Zhu H C,Qu J L,et al.Flow stress and dynamic recrystallization behavior and modeling of GH4738 superalloy during hot compression[J].Journal of Materials Research and Technology,2023,26:4957-4974.
• [5] Gao J G,Yang S F,Zhao P,et al.Optimization of process parameters for ESR waspaloy superalloy by numerical simulation[J].Materials,2022,15(21):7483.
• [6] 杜金辉，吕旭东，董建新，等.国内变形高温合金研制进展[J].金属学报，2019,55(9):1115-1132.DU Jin-hui,Lü Xu-dong,DONG Jian-xin,et al.Research progress of wrought superalloys in China[J].Acta Metallurgica Sinica,2019,55(9):1115-1132.
• [7] Chen Z Y,Yang S F,Qu J L,et al.Effects of different melting technologies on the purity of superalloy GH4738[J].Materials,2018,11(10):1838.
• [8] Hu Y,Liu D,Yang Y H,et al.Experimental and numerical analysis on bulge forming process of GH4738 thick-walled ring[J].The International Journal of Advanced Manufacturing Technology,2021,113:1591-1604.
• [9] Li W,Gang Y,Ting L,et al.Hot deformation behavior of GH738 for A-USC turbine blades[J].Journal of Iron and Steel Research(International),2015,22(11):1043-1048.
• [10] 李林翰，董建新，张麦仓，等.GH4738合金涡轮盘锻造过程的集成式模拟及应用[J].金属学报，2014,50(7):821-831.LI Lin-han,DONG Jian-xin,ZHANG Mai-cang,et al.Integrated simulation of the forging process for GH4738 alloy turbine disk and its application[J].Acta Metallurgica Sinica,2014,50(7):821-831.
• [11] 赵薇，董建新，张麦仓，等.GH4169、GH4169plus 和GH4738 高温合金组织稳定性[J].材料热处理学报，2015,36(增刊Ⅰ):1-6.ZHAO Wei,DONG Jian-xin,ZHANG Mai-cang,et al.High-temperature microstructure stability of GH4169,GH4169plus and GH4738 alloy[J].Transactions of Materials and Heat Treatment,2015,36(supplementⅠ):1-6.
• [12] 李振团，秦鹤勇，田强，等.变形参数对GH4742合金动态再结晶及γ′相的影响[J].钢铁，2021,57(2):117-126.LI Zhen-tuan,QIN He-yong,TIAN Qiang,et al.Effect of deformation parameters on dynamic recrystallization and γ′-phase of GH4742 superalloy[J].Iron and Steel,2021,57(2):117-126.
• [13] Kong W,Wang Y,Yuan C,et al.Microstructural evolution and stress rupture behaviour of a Ni-based wrought superalloy during thermal exposure[J].Materials Science and Engineering A,2021,822:1-13.
• [14] 刘继文，胡朝辉，王君阳，等.NiCoCrFeAlTiMoW 合金长期时效过程中γ′相粗化对拉伸性能的影响[J].材料工程，2024,52(2):172-179.LIU Ji-wen,HU Zhao-hui,WANG Jun-yang,et al.Effect of γ′ phase coarsening on tensile properties during longtermaging of NiCoCrFeAlTiMoW alloy[J].Journal of Materials Engineering,2024,52(2):172-179.
• [15] 雍岐龙.钢铁材料中的第二相[M].北京：冶金工业出版社，2006.YONG Qing-long.Secondary Phases in Steels[M].Beijing:Metallurgy Industry Press,2006.
• [16] Zhang F,Wang C,Wu Y,et al.Microstructural stability and mechanical properties of GH742 Ni-based wrought superalloy for turbine disk applications[J].Materials Science and Engineering A,2022,832:1-13.
• [17] 周宣，李宇力，马腾飞，等.FGH97合金连续冷却过程中γ′相的析出行为[J].稀有金属材料与工程，2020,49(6):2147-2153.ZHOU Xuan,LI Yu-li,MA Teng-fei,et al.Precipitation behavior of γ′ in superalloy FGH97 during continuous cooling from supersolvus temperature[J].Rare Metal Materials and Engineering,2020,49(6):2147-2153.
• [18] Hüther W,Reppich B.Interaction of dislocations with coherent,stress-free,ordered particles[J].International Journal of Materials Research,1978,69(10):628-634.
• [19] 秦鹤勇，李振团，赵光普，等.固溶温度对GH4742合金力学性能及γ′相的影响[J].材料研究学报，2023,37(7):503-510.QIN He-yong,LI Zhen-tuan,ZHAO Guang-pu,et al.Effect of solution temperature on mechanical properties and γ′ phase of GH4742 superalloy[J].Chinese Journal of Materials Research,2023,37(7):503-510.
• [20] Galindo-Nava E I,Connor L D,Rae C M F.On the prediction of the yield stress of unimodal and multimodal γ′ nickel-base superalloys[J].Acta Materialia,2015,98:377-390.
• [21] 董建新.高温合金GH4738及应用[M].北京：冶金工业出版社，2014.DONG Jian-xin.GH4738 Superalloy and Applicaiton[M].Beijing:Metallurgy Industry Press,2014.
• [22] 李育升，宋珂阳，于凯，等.热处理工艺对GH4151 合金冲击性能的影响[J].材料热处理学报，2023,44(4):102-111.LI Yu-sheng,SONG Ke-yang,YU Kai,et al.Effect of heat treatment process on impact properties of GH4151 alloy[J].Transactions of Materials and Heat Treatment,2023,44(4):102-111.
• [23] Jia D,Sun W R,Xu D S,et al.Abnormal dynamic recrystallization behavior of a nickel based superalloy during hot deformation[J].Journal of Alloys and Compounds,2019,787:196-205.
• [24] Azarbarmas M,Aghaie-Khafri M,Cabrera J M,et al.Dynamic recrystallization mechanisms and twining evolution during hot deformation of Inconel 718[J].Materials Science and Engineering A,2016,678:137-152.
• [25] Pradhan S K,Mandal S,Athreya C N,et al.Influence of processing parameters on dynamic recrystallization and the associated annealing twin boundary evolution in a nickel base superalloy[J].Materials Science and Engineering A,2017,700:49-58.

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