Extrinsic toughness mechanisms of Al-Li alloys 2090 and 2090+Ce

被引：0
|
作者：
Lei, X
Wang, YX
机构：
来源：
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 1996年 / 217卷
关键词：
Al-Li alloys; extrinsic toughening; crack closure; delamination;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The growth behavior of long fatigue cracks for high-strength Al-Li alloy 2090 was investigated, and was compared with that of traditional Al alloy 7075. The extrinsic toughening mechanism in Paris and II zone has been revealed. Furthermore, the influence of Ce on the long fatigue crack growth behavior in alloy 2090 was studied. Nominal growth resistance of long fatigue cracks in alloy 2090 and 2090+Ce is superior to that of alloy 7075, which is attributed to crack closure near threshold and delamination toughness in II zone, and extrinsic toughness effect in Paris zone results from the combined effect of crack closure and delamination toughness. A significant improvement in the intrinsic growth resistance can be obtained by adding Ce into alloy 2090.
引用
收藏
页码：1491 / 1497
页数：7
相关论文
共 50 条
  • [1] The Effect of Precipitates on Anisotropy of Al-Li Alloys 2090 and 2090+Ce
    Zhao, Zhilong
    Chen, Zheng
    Liu, Lin
    MANUFACTURING SCIENCE AND ENGINEERING, PTS 1-5, 2010, 97-101 : 496 - +
  • [2] Strengthening contribution of precipitates and anisotropy of yield strength in Al-Li alloys 2090 and 2090+Ce
    赵志龙
    刘林
    陈铮
    中国有色金属学报, 2000, (S1) : 42 - 45
  • [3] Co-strengthening contribution of δ′and T1 precipitates in Al-Li alloys 2090 and 2090+Ce
    ZHAO Zhilong
    RareMetals, 2006, (03) : 197 - 201
  • [4] Behavior of Growth and Coarsening of T1(Al2CuLi) Precipitates in Al-Li Alloys 2090 and 2090+Ce
    Zhilong Zhao
    RareMetals, 2001, (03) : 174 - 177
  • [5] Behavior of growth and coarsening of T1(Al2CuLi) precipitates in Al-Li alloys 2090 and 2090+Ce
    Zhao, ZL
    Liu, L
    Chen, Z
    RARE METALS, 2001, 20 (03) : 174 - 177
  • [6] Co-strengthening contribution of δ′ and T1 precipitates in Al-Li afloys 2090 and 2090+Ce
    Zhao Zhilong
    Liu Lin
    Chen Zheng
    RARE METALS, 2006, 25 (03) : 197 - 201
  • [7] CORROSION FATIGUE IN AL-LI ALLOY 2090
    DERVENIS, CP
    MELETIS, EI
    HOCHMAN, RF
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1988, 102 (02): : 151 - 160
  • [8] Fatigue crack closure in Al-Li 2090 alloy
    Jung, HY
    Antolovich, SD
    ADVANCES IN FRACTURE RESEARCH, VOLS 1-6, 1997, : 1637 - 1644
  • [9] Serrated flow behavior in 2090 Al-Li alloy
    Shen, Yin Zhong
    Oh, Kyu Hwan
    Lee, Dong Nyung
    MECHANICAL BEHAVIOR OF MATERIALS X, PTS 1AND 2, 2007, 345-346 : 157 - +
  • [10] Microstructure and properties of Al-Li alloy 2090 weldments
    Iamboliev, Theofil
    Schweissen und Schneiden/Welding and Cutting, 1999, 51 (06):
12345