Stress shielding and fatigue crack growth resistance in ferritic-pearlitic steel

被引:51
作者
Mutoh, Y.
Korda, Akhmad A.
Miyashita, Y.
Sadasue, T.
机构
[1] Nagaoka Univ Technol, Dept Mech Engn, Niigata 9402188, Japan
[2] Nagaoka Coll Technol, Dept Mech Engn, Niigata 9408532, Japan
[3] JFE Steel Corp, Steel Res Lab, Chuo Ku, Chiba, Japan
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 468卷 / 114-119期
关键词
fatigue crack growth resistance; crack tip stress shielding; pearlite morphology; in situ observation; constant-Delta K fatigue test; crack closure;
D O I
10.1016/j.msea.2006.07.171
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effect of pearlite morphology on stage IIb (Paris regime) fatigue crack growth behavior in ferritic-pearlitic steel was investigated. Networked and distributed pearlite structures were prepared. Constant-Delta K fatigue crack growth tests were performed in situ in a scanning electron microscope. The results revealed that a distributed pearlite structure had better fatigue crack growth resistance than a networked pearlite structure. From the in situ observations, the distributed pearlite structure indicated a tortuous crack path, which induced crack interlocking as well as crack closure. For the networked pearlite structure, some crack branching was found on the crack path. The crack growth curves for the two microstructures, plotted using the effective stress intensity factor range Delta K-eff, where crack closure behavior is taken into consideration, did not coincide. The crack growth curves plotted using the crack tip effective stress intensity factor range Delta K-eff,K-tip, where crack tip shielding behavior as well as crack closure are taken into consideration, successfully coincided on one line. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:114 / 119
页数:6
相关论文
共 21 条
  • [1] THE DEPENDENCE OF NEAR-THRESHOLD FATIGUE CRACK-GROWTH ON MICROSTRUCTURE AND ENVIRONMENT IN DUAL-PHASE STEELS
    CHEN, DL
    WANG, ZG
    JIANG, XX
    AI, SH
    SHIH, CH
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 108 : 141 - 151
  • [2] DIETER GE, 1998, MECH METALLURGY, P375
  • [3] Ewalds H. L., 1986, FRACTURE MECH, p[172, 276]
  • [4] Findlay S.J., 2002, Mater. Today, V5, P18, DOI [10.1016/S1369-7021(02)01138-0, DOI 10.1016/S1369-7021(02)01138-0]
  • [5] Fatigue life studies in carbon dual-phase steels
    Hashimoto, TM
    Pereira, MS
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 1996, 18 (08) : 529 - 533
  • [6] Kikukawa M., 1976, Journal of the Society of Materials Science, Japan, V25, P899, DOI 10.2472/jsms.25.899
  • [7] THE INFLUENCE OF A DUPLEX MICROSTRUCTURE IN STEELS ON FATIGUE CRACK-GROWTH IN THE NEAR-THRESHOLD REGION
    MINAKAWA, K
    MATSUO, Y
    MCEVILY, AJ
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1982, 13 (03): : 439 - 445
  • [8] MURAKAMI Y, 1987, STRESS INTENSITY FAC, V1, P9
  • [9] EFFECT OF YIELD STRESS AND GRAIN-SIZE ON THRESHOLD AND FATIGUE LIMIT
    MUTOH, Y
    RADHAKRISHNAN, VM
    [J]. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1986, 108 (02): : 174 - 178
  • [10] MUTOH Y, 1994, T MRS JAP, V14, P379