Microstructural investigation and model of fatigue short crack in EH36 steels

被引：9
|
作者：
Su, Molin [1 ,2 ]
Xu, Lianyong [1 ,2 ]
Feng, Chao [1 ,2 ]
Han, Yongdian [1 ,2 ]
Zhao, Lei [1 ,2 ]
Xiao, Guangchun [3 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
[2] Tianjin Key Lab Adv Joining Technol, Tianjin, Peoples R China
[3] Qilu Univ Technol, Sch Mech Engn, Jinan, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2022年 / 45卷 / 08期
基金：
中国国家自然科学基金;
关键词：
dislocation density; fatigue fracture; short crack; stress intensity factor; GROWTH; BEHAVIOR; INITIATION; EVOLUTION; ORIENTATION; CLOSURE; ALLOY; METAL;
D O I：
10.1111/ffe.13731
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
For better revealing the behavior and mechanism of fatigue short crack (SC) propagation, five different kinds of notched samples were designed. Based on the crack growth rate-SC length map, finite element method and electron backscatter diffraction (EBSD) pattern, the evolution theory of geometrically necessary dislocation density (rho(GND)) versus SC length was proposed to distinguish the physically short crack (PSC) length; Schmid factor was utilized to define the length of microstructurally short crack (MSC). Thus, the whole SC growth was divided into three parts: MSC, transition zone and PSC. Finally, an original piecewise model containing two parameters was proposed to describe the whole SC growth of EH36 steels.
引用
收藏
页码：2227 / 2242
页数：16
相关论文
共 50 条
  • [21] A stochastic Markovian model for fatigue short crack growth across microstructural barriers
    Fedelich, B
    COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE, 2001, 329 (10): : 741 - 746
  • [22] Simultaneous Improvement in Mechanical Properties and Fatigue Crack Propagation Resistance of Low Carbon Offshore Structural Steel EH36 by Cu-Cr Microalloying
    Peng, Xingdong
    Zhang, Peng
    Hu, Ke
    Yan, Ling
    Li, Guanglong
    METALS, 2021, 11 (11)
  • [23] Influence of surface porosity on fatigue life of additively manufactured ASTM A131 EH36 steel
    Wang, Jingjing
    Zhang, Meng
    Wang, Bing
    Tan, Xipeng
    Wu, Wen Jin
    Liu, Yang
    Bi, Gui Jun
    Tor, Shu Beng
    Liu, Erjia
    INTERNATIONAL JOURNAL OF FATIGUE, 2021, 142
  • [24] Ductile fracture prediction of EH36 grade steel based on Hosford?Coulomb model
    Park, Sung-Ju
    Lee, Kangsu
    Cerik, Burak Can
    Choung, Joonmo
    SHIPS AND OFFSHORE STRUCTURES, 2019, 14 (sup1) : S219 - S230
  • [25] Investigation of corrosion behavior, tensile and cyclic fracture mechanism of EH36 steel welded joints
    Su, Molin
    Yang, Siyu
    Xu, Lianyong
    Zhao, Lei
    Han, Yongdian
    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2023, 27 : 2007 - 2019
  • [26] Pit to crack transition and corrosion fatigue lifetime reduction estimations by means of a short crack microstructural model
    Balbin, J. A.
    Chaves, V.
    Larrosa, N. O.
    CORROSION SCIENCE, 2021, 180
  • [27] Fatigue behavior of ASTM A131 EH36 steel samples additively manufactured with selective laser melting
    Wang, Jingjing
    Zhang, Meng
    Tan, Xipeng
    Liu, Tong
    Bi, Guijun
    Li, Hua
    Tor, Shu Beng
    Liu, Erjia
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 777
  • [28] Microstructural and environmental effects on fatigue crack propagation in duplex stainless steels
    Marrow, T.J.
    King, J.E.
    Fatigue and Fracture of Engineering Materials & Structures, 1994, 17 (07): : 761 - 771
  • [29] Microstructural and environmental effects on fatigue crack propagation in duplex stainless steels
    Marrow, T.J., 1600, Publ by Univ of Sheffield, Sheffield, United Kingdom (17):
  • [30] Microstructural effects on the fatigue crack nucleation in cold work tool steels
    Picas, Ingrid
    Cuadrado, Nuria
    Casellas, Daniel
    Goez, Alexey
    Llanes, Luis
    FATIGUE 2010, 2010, 2 (01): : 1777 - 1785
12345