锻压技术

GH4169D 高温合金锻件持久寿命的影响因素研究

英文标题：Study on influencing factors of rupture life for superalloy GH4169D forgings

作者：王妙全田成刚徐　瑶南　洋袁文玲

分类号：TB31

出版年,卷(期):页码：2023,48(1):46-53

摘要：

对航空发动机GH4169D 高温合金前置扩压器锻件的高温持久寿命和显微组织进行了评定, 通过分析锻件本体和试环的力学性能与显微组织, 研究了GH4169D 高温合金锻件持久寿命的影响因素。结果表明, 锻件的晶粒组织、热处理制度及析出相均为影响因素, 且析出相η 相的含量为主要影响因素, 锻件中析出过多的η 相会导致强化相γ′相析出不足, 从而降低锻件的持久寿命。提高固溶热处理温度和固溶冷却速度, 可在一定程度上抑制η 相的析出, 从而提高锻件的持久寿命。此外, 锻造过程中应尽可能保证锻件晶粒组织均匀, 避免出现混晶组织, 否则也易导致锻件持久寿命不合格。

The high-temperature stress rupture life and microstructure of superalloy GH4169D front diffuser forgings of aero-engine were mainly evaluated, and the influencing factors for the stress rupture life of superalloy GH4169D forgings were studied by analyzing the mechanical properties and microstructure of forgings body and test ring. The results show that grain structure, heat treatment system and precipitated phases of forgings are all the influencing factors, and the content of precipitated phase η is the main influencing factor. Excessive precipitation η phase in forgings leads to insufficient precipitation of strengthened γ′ phase, which reduces the stress rupture life of forgings. However, the precipitation of η phase can be inhibited to some extent by increasing the temperature of solution heat treatment and the cooling rate of solution, so as to improve the stress rupture life of forgings. In addition, during the forging process, the grain structure of forgings should be as uniform as possible to avoid the appearance of mixed grain structure, otherwise it is easy to lead to unqualified stress rupture life of forgings.

基金项目：

作者简介: 王妙全(1982-), 男, 硕士, 高级工程师 E-mail: miaoquanw@ 126. com

参考文献：

[1] 　Schafrik R E, Ward D D, Groh J R. Application of alloy 718 in GE aircraft engines: Past, present and next five years [A]. Superalloys718, 625, 706 and Various Derivatives [C]. TMS, 2001.

[2] 　Paulonis D F, Schirra J J. Alloy 718 at Pratt & Whitney-Historical perspective and future challenges [A]. Superalloys718, 625, 706and Various Derivatives [C]. TMS, 2001.

[3] 　王妙全, 田成刚, 徐瑶, 等. 新型高温合金718Plus 的性能特点、航空应用和发展趋势[J]. 材料导报, 2017, 31 (10):72-78.

Wang M Q, Tian C G, Xu Y, et al. Performance characteristics and aerospace application and development trend of the new superalloy 718Plus [J]. Materials Reports, 2017, 31 (10): 72-78.

[4] 　Kennedy R L, Cao W D, Bayha T D, et al. Developments in wrought Nb containing superalloys (718+100 ℉) [A]. Niobium for High Temperature Applications [C]. TMS, Pennsylvania, 2003.

[5] 　Cao W D, Kennedy R L. Role of chemistry in 718 type alloys-Allvac® 718PlusTM development [A]. Presented at Superalloys 2004 [C]. TMS: Warrendale, 2004.

[6] 　Kennedy R L, Cao W D. New developments in wrought 718-type superalloys [ J ]. Acta Metallurgica Sinica: English Letters, 2005, 18 (1): 39-46.

[7] 　王民庆, 邓群, 杜金辉, 等. ATI 718Plus 合金国内研究进展[J]. 稀有金属材料与工程, 2016, 45 (12): 3335-3340.

Wang M Q, Deng Q, Du J H, et al. Research progress of alloy ATI 718Plus in China [J]. Rare Metal Materials and Engineering, 2016, 45 (12): 3335-3340.

[8] 　仉建波, 李京桉, 彭远祎, 等. ATI 718 Plus 高温合金微观组织与性能研究进展[J]. 材料导报, 2022, 36 (4): 149-156.

Zhang J B, Li J A, Peng Y Y, et al. Reviews on the study of microstructure and properties of ATI 718Plus Superalloy [J]. Materials Reports, 2022, 36 (4): 149-156.

[9] 　Billot T, Villechaise P, Jouiad M, et al. Creep-fatigue behavior at high temperature of a UDIMET 720 nickel-base superalloy [J]. International Journal of Fatigue, 2010, 32 (5): 824-829.

[10] Song X Q, Tang L Y, Chen Z, et al. Micro-mechanism during long-term creep of a precipitation-strengthened Ni-based superalloy [J]. Journal of Materials Science, 2017, 52 (8): 4587-4598.

[11] 谢兴飞, 曲敬龙, 杜金辉. GH4720Li 镍基合金混晶组织对高温持久性能的影响[J]. 材料导报, 2020, 34 (z1): 375-379, 384.

Xie X F, Qu J L, Du J H. Effect of mixed grain structure on high temperature stress rupture property of Ni-based GH4720Li superalloy [J]. Materials Reports, 2020, 34 (z1): 375-379, 384.

[12] 朱丽娜, 李文, 祁峰, 等. 晶粒组织对GH4169G 合金持久性能的影响[J]. 热加工工艺, 2011, 40 (16): 47-49.

Zhu L N, Li W, Qi F, et al. Effect of grain microstructure on stress rupture property of GH4169G alloy [J]. Hot Working Technology, 2011, 40 (16): 47-49.

[13] Andrieu E, Wang N, Molins R, et al. Influence of compositional modifications on thermal stability of alloy 718 [ A]. Superalloys718, 625, 706 and Various Derivatives [C]. TMS, 1994.

[14] Andrieu E, Cozar R, Pineau A. Effect of environment and microstructure on the high temperature behavior of alloy 718 [A]. Superalloys 718-Metallurgy and Application [ C]. The Minerals, Metals & Materials Society, 1994.

[15] Xie X S, Wang G L, Dong J X, et al. Structure stability study on a newly developed nickel-base superalloy-allvac 718Plus [ A]. Sixth Internatonal Symposium on Superalloys 718, 625, 706 and Various Derivatives [C]. TMS, 2005.

[16] Wang M Q, Du J H, Deng Q, et al. Effect of the precipitation of the η-Ni3Al0. 5Nb0. 5 phase on the microstructure and mechanical properties of ATI 718Plus [J]. Journal of Alloys and Compounds, 2017, 701: 635-644.

服务与反馈：

【文章下载】【加入收藏】