Planar dislocation structure during creep-fatigue interactions of TP347H heat-resistant austenitic steel at 600 °C
作者: Hongwei ZhouHongyan ZhangFengmei BaiMeng SongYan ChenLiqiang ZhangXudong FangYizhu He
作者单位: 1Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (Anhui University of Technology), Ministry of Education, Ma'anshan, 243002, China
2School of Materials Science and Engineering, Anhui University of Technology, 243002, Anhui, PR China
3School of Metallurgical Engineering, Anhui University of Technology, 243002, Anhui, PR China
4State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110189, PR China
5State Key Laboratory of Advanced Stainless Steel, Taiyuan Iron and Steel Group Company Limited, Taiyuan, 030003, China
刊名: Materials Science & Engineering A, 2020, Vol.779
来源数据库: Elsevier Journal
DOI: 10.1016/j.msea.2020.139141
关键词: Heat-resistant austenitic steelCreep-fatigueLow cycle fatigueFatigue fracture modePlanar slip structure
英文摘要: Abstract(#br)The low-cycle fatigue (LCF) and creep-fatigue (CF) interaction tests of TP347H austenitic stainless steel are carried out in air under a fully-reversed strain amplitude of 1.0% at 600 °C. A 10 min tensile dwell is applied in CF interaction testing. The influences of dwell on dislocation structures and fracture behavior have been evaluated. It is found that CF interaction life is lower than LCF one. The fatigue fracture mode changes from transgranular crack under LCF to transgranular plus intergranular fracture with tensile dwell. A lot of dislocation planar slip bands (PSBs) were found under CF interaction condition. PSB interacts with PSB of another slip system, twins, grain boundary (GB), and triangular GB. Strongly PSB-GB interaction causes stress concentration at GB,...
全文获取路径: Elsevier  (合作)
影响因子:2.108 (2012)

  • creep 蠕变
  • austenitic 奥氏体的
  • fatigue 疲劳
  • steel 
  • dislocation 断层
  • resistant 耐久的
  • structure 构造
  • during 在的期间