+高级检索
析出相特征对GH4720Li合金疲劳性能的影响
作者单位:

北京科技大学

基金项目:

国家自然科学基金(51971016)


Effect of precipitates characteristics on fatigue properties of GH4720Li alloy
Affiliation:

University of Science and Technology Beijing

  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [19]
  • |
  • 相似文献 [20]
  • | | |
  • 文章评论
    摘要:

    本文对不同温度固溶热处理的GH4720Li合金进行系列疲劳实验,研究合金析出相特征与疲劳性能的关联性。结果表明:固溶温度在1080℃~1120℃,合金中一次γ′相体积分数高,近球形的三次γ′相尺寸逐渐长大,晶粒组织细小、均匀,位错滑移主要是切过和绕过球形的γ′相并留下细小的滑移带,说明γ′析出相可以有效阻碍滑移带的扩展,合金疲劳性能较好;在1140℃,一次γ′相不均匀回溶,合金出现明显的混晶组织,三次γ′相形貌逐渐转变为方形,相互平行的滑移带尺寸明显增大,此时材料内部已发生较大程度的变形,材料的抗疲劳性能降低;在1180℃,一次γ′相完全回溶,合金产生粗大的晶粒组织,滑移带相互交叉,并且穿过晶界,严重降低合金的疲劳抗性。

    Abstract:

    In this paper, series experiments were carried under different fatigue load spectrum for different solution annealing treated GH4720Li alloy. The results show that when the solution temperature is between 1080 °C and 1120 °C, the volume fraction of primary γ′ phase in the alloy is high, and the size of the near spherical tertiary γ′ phase gradually grows, and the grain structure is fine and uniform. The dislocation slip mainly cuts and bypasses the spherical γ′ phase and leaves a small slip band, indicating that the γ′ precipitates can effectively hinder the expansion of the slip band, the alloy has good fatigue performance. When the solution temperature is rise to 1140 °C, the primary γ′ phase dissolves unevenly, inducing the obvious mixed grain size distribution, and the morphology of tertiary γ′ phase gradually transforms into square shape. The size of parallel slip bands increases obviously, and the internal deformation of the material has occurred to a large extent, and the fatigue resistance of the material decreases. When the solution treated temperature is over the γ′ phase transformation point, such as at 1180 °C, the γ′ phase completely dissolves, and resulting in the coarse grain structure.The slip bands cross each other and pass through the grain boundary, which seriously reduces the fatigue resistance of the alloy.

    参考文献
    [1] Furrer D,Fecht H. Journal of metals[J],1999,51(1):14
    [2] Hu Dianyin (胡殿印),Gao Ye(高晔),Ma Qihang(马琦航) et al. Rare Metal Materials and Engineering (稀有金属材料与工程) [J],2018,47(8):2386
    [3] Marchionni M,Osinkolu G A,Onofrio G. International Journal of Fatigue[J],2002,24:1261
    [4] Du Jinhui(杜金辉),Qu Jinglong(曲敬龙),Deng Qun(邓群) et al. Journal of Iron and Steel Research (钢铁研究学报)[J],2005(3):60
    [5] Moyer J M,Jackman L A,Adasczik C B. Superalloys 718,625, 706 and Various Derivatives[C],1994:39
    [6] Jain S K,Ewing B A,Yin C A. Superalloys 2000[C],2000:785
    [7] Safari J,Nategh S. Journal of Materials Processing Technology[J], 2006,17:240
    [8] Groh J R. Proceeding of the 8th International Symposium on Superalloy[C],1996,621
    [9] Mitchell R J,Preuss M. Metallurgical and Materials Transactions A [J],2007,38:615
    [10] Li Chenggong(李成功),Fu Hengzhi(傅恒志),Yu Qiao(于翘). Aerospace Materials(航空航天材料)[M].National Defence Industry Press,2002
    [11] Reed R C. New York:Cambridge University Press[M],2006
    [12]Wang Pu(王璞),Dong Jianxin(董建新),Zhang Yiwen(张义文) et al. Rare Metal Materials and Engineering (稀有金属材料与工程) [J],2010,39(1):157
    [13]Han Zhiyu(韩志宇),Zhang Pingxiang(张平祥),Song Jiaming(宋嘉明) et al. Rare Metal Materials and Engineering (稀有金属材料与工程) [J],2021,50(2):693
    [14] Li Weiyin(李维银),Liu Hongfei(刘红飞),Wang Ting(王婷). Materials for Mechanical Engineering(机械工程材料)[J],2008,32(7):64
    [15] Long Zhengdong(龙正东),Deng Qun(邓群),Lin Ping(林平). Journal of Materials Engineering(材料工程)[J],1999(03):41
    [16] Shi Zhenxue(史振学),Hu Yingtao(胡颖涛),Liu Shizhong(刘世忠).Materials for Mechanical Engineering(机械工程材料) [J],2021,45(03):16
    [17] Jackson M P, Reed R C. Materials Science and Engineering[J], 1999,259A:85
    [18] Bain K R,Gambone M L,Hyzak J M. Superalloys 1988[J], 1988:13
    [19] Grosdidier T,Hazotte A,Simon A. Material Science and Engineer [J],1998,256:18
    引证文献
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

宋珂阳,李育升,孙 悦,史宸伊,牛文龙,张麦仓.析出相特征对GH4720Li合金疲劳性能的影响[J].稀有金属材料与工程,2023,52(8):2851~2858.[Song Keyang, Li Yusheng, Sun yue, Shi Chenyi, Niu Wenlong, Zhang Maicang. Effect of precipitates characteristics on fatigue properties of GH4720Li alloy[J]. Rare Metal Materials and Engineering,2023,52(8):2851~2858.]
DOI:10.12442/j. issn.1002-185X.20220634

复制
文章指标
  • 点击次数:455
  • 下载次数: 1057
  • HTML阅读次数: 56
  • 引用次数: 0
历史
  • 收稿日期:2022-08-04
  • 最后修改日期:2022-09-27
  • 录用日期:2022-09-27
  • 在线发布日期: 2023-08-28
  • 出版日期: 2023-08-24