Influence of microstructure and stress ratio on fatigue crack propagation in TiAl alloy

被引：1
|
作者：
Zuo, Yanrui [1 ]
Rui, Zhiyuan [1 ]
Feng, Ruicheng [1 ]
Luo, Dechun [1 ]
Yan, Changfeng [1 ]
机构：
[1] Lanzhou Univ Technol, Minist Educ, Key Lab Digital Mfg Technol & Applicat, Lanzhou 730050, Peoples R China
来源：
CHEMICAL, MATERIAL AND METALLURGICAL ENGINEERING III, PTS 1-3 | 2014年 / 881-883卷
关键词：
fatigue crack propagation; TiAl alloy; microstructure; stress ratio; GROWTH;
D O I：
10.4028/www.scientific.net/AMR.881-883.1330
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Based on the fatigue crack propagation experiments did by A.-L. Gloanec et al., the fatigue crack propagation rates of TiAl alloy of two processing routes, namely casting and PM, and stress ratios had been tested, in order to find out the effects of microstructure and stress ratio. An improved fatigue crack propagation formula for region II (the expansion region) was derived according to Paris formula. The specific values of the constants in the formula were calculated. Fatigue crack propagation resistance of nearly fully lamellar microstructure is superior to that of equiaxed gamma grain. The experimental results present that both microstructure and stress ratio has a significant influence on fatigue crack growth rate.
引用
收藏
页码：1330 / 1333
页数：4
相关论文
共 50 条
  • [21] Influence of lamellar lath orientation on crack propagation in a gamma TiAl alloy
    Chen, MW
    Lin, DL
    Chen, D
    [J]. SCRIPTA MATERIALIA, 1997, 36 (05) : 497 - 501
  • [22] Fatigue threshold and crack propagation in γ-TiAl sheets
    Pippan, R
    Hageneder, P
    Knabl, W
    Clemens, H
    Hebesberger, T
    Tabernig, B
    [J]. INTERMETALLICS, 2001, 9 (01) : 89 - 96
  • [23] The influence of microstructure on fatigue crack growth propagation in ductile irons
    Iacoviello, F.
    Cavallini, M.
    [J]. 2003, Associazione Italiana di Metallurgia (95):
  • [24] Microstructure influence on fatigue crack propagation in sintered stainless steels
    Iacoviello, F
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2005, 27 (02) : 155 - 163
  • [25] Influence of lamellar orientation on fatigue crack propagation behavior in titanium aluminide TiAl
    Shiota, H
    Tokaji, K
    Ohta, Y
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2): : 169 - 175
  • [26] Near-threshold fatigue crack growth behavior of 2195 aluminum-lithium-alloy-prediction of crack propagation direction and influence of stress ratio
    Chen, DL
    Chaturvedi, MC
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2000, 31 (06): : 1531 - 1541
  • [27] Near-threshold fatigue crack growth behavior of 2195 aluminum-lithium-alloy—prediction of crack propagation direction and influence of stress ratio
    D. L. Chen
    M. C. Chaturvedi
    [J]. Metallurgical and Materials Transactions A, 2000, 31 : 1531 - 1541
  • [28] Fatigue crack propagation of magnesium alloy in biaxial stress fields
    Itoh, Y
    Shimamoto, A
    [J]. NONDESTRUCTIVE DETECTION AND MEASUREMENT FOR HOMELAND SECURITY III, 2005, 5769 : 89 - 100
  • [29] Relationship of fatigue crack propagation and microstructure for TA15 alloy
    Wu Chonzhou
    Li Xingwu
    Huang Xu
    Ma Jimin
    Cao Chunxiao
    [J]. RARE METAL MATERIALS AND ENGINEERING, 2007, 36 (12) : 2128 - 2131
  • [30] Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy
    Morita, S.
    Fujiwara, S.
    Hori, T.
    Hattori, N.
    Somekawa, H.
    Mayama, T.
    [J]. FRATTURA ED INTEGRITA STRUTTURALE, 2016, (35): : 82 - 87
12345