A STUDY OF CREEP CRACK-PROPAGATION OF HK-40 FURNACE TUBES WITH C-SHAPED SPECIMENS

被引：11
|
作者：
WANG, YL
SHEN, FZ
TU, ST
机构：
[1] NANJING INST CHEM TECHNOL,DEPT CHEM MACHINERY,NANJING 210009,PEOPLES R CHINA
[2] ROYAL INST TECHNOL,DEPT MAT TECHNOL,S-10044 STOCKHOLM,SWEDEN
来源：
ENGINEERING FRACTURE MECHANICS | 1994年 / 47卷 / 01期
关键词：
Crack propagation;
D O I：
10.1016/0013-7944(94)90236-4
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
C-shaped specimens are used to study the propagation of creep cracks in HK 40 furnace tubes. A potential difference equation is proposed to calibrate the creep crack. Experimental data are correlated with the linear elastic stress intensity factor K, net section stress sigma(net),, and creep energy integration C-t. Results show that the parameter C-t could describe fairly well the overall process of creep crack propagation. Furthermore, by examination of the microstructure in the crack tip region, it is concluded that the crack propagation is the result of the coalescence of the main crack and the cavities. On the basis of this observation, a creep crack propagation model is employed to estimate the crack growth rates. Good prediction of the crack growth behaviour has been achieved.
引用
收藏
页码：39 / &
相关论文
共 15 条
  • [1] Welding of HK-40 centripetal casting furnace tubes
    2001, Lanzhou Petroleum Machinery Research Institute (30):
  • [2] HOW TO REPAIR WELD HK-40 FURNACE TUBES
    VOELKER, CH
    ZEIS, LA
    HYDROCARBON PROCESSING, 1972, 51 (04): : 121 - &
  • [3] ULTRASONIC INSPECTION OF CAST HK-40 TUBES FOR CREEP FISSURES
    DALTON, RR
    MATERIALS EVALUATION, 1974, 32 (12) : 264 - 268
  • [4] TWO METHODS FOR ASSESSMENT OF RESIDUAL LIFE OF HK-40 FURNACE TUBES
    F.Z. Shen. G.X. Ma and X. Ling Nanjing University of Chemical Technology
    Acta Metallurgica Sinica(English Letters), 1999, (01) : 108 - 115
  • [5] Two methods for assessment of residual life of HK-40 furnace tubes
    Shen, F.Z.
    Ma, G.X.
    Ling, X.
    Yang, X.
    Zhang, X.Z.
    Ruan, J.
    Lu, Y.
    Acta Metallurgica Sinica (English Letters), 1999, 12 (01): : 105 - 112
  • [6] RADIOGRAPHIC INSPECTION OF CAST HK-40 TUBES FOR CREEP FISSURES .2.
    DALTON, RR
    MATERIALS EVALUATION, 1972, 30 (12) : 249 - &
  • [7] USE OF C-STAR PARAMETER IN PREDICTING CREEP CRACK-PROPAGATION RATES
    HARPER, MP
    ELLISON, EG
    JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, 1977, 12 (03): : 167 - 179
  • [8] Dependence of creep crack propagation on columnar grain orientation in cast HK40 tube
    Zhu, SM
    Zhu, SJ
    Zhang, JS
    Tjong, SC
    MATERIALS SCIENCE AND TECHNOLOGY, 1996, 12 (06) : 513 - 517
  • [9] Quantitative study of creep cavity area of HP40 furnace tubes
    Guan, KS
    Xu, H
    Wang, ZW
    NUCLEAR ENGINEERING AND DESIGN, 2005, 235 (14) : 1447 - 1456
  • [10] INFLUENCE OF LATE-BREAKING LIGAMENTS ON CRACK-PROPAGATION IN COMPACT SPECIMENS - A PHOTO-ELASTIC STUDY
    SHUKLA, A
    DALLY, JW
    EXPERIMENTAL MECHANICS, 1983, 23 (03) : 298 - 303
12