Experimental study on low temperature fatigue performance of polar icebreaking ship steel

The low-temperature mechanical properties and low-temperature fatigue properties of polar icebreakers steel are the key to ensure the safe operation of polar icebreakers under low temperature conditions. The main material of the polar icebreaker “Snow DragonⅠ” is EH36 steel due to its good impact toughness and low temperature resistance. In this paper, the tensile experiments and fatigue behavior of EH36 steel used in “Snow Dragon” under different temperatures are studied. The mechanical properties and low-temperature fatigue crack growth characteristics of the material were obtained. The experimental results show that the yield strength, tensile limit, elongation, and cross-sectional shrinkage will increase to varying degrees with decreasing temperature. As the temperature decreases, the plasticity of EH36 steel decreases and the brittleness increases. The fatigue crack growth rate of EH36 steel is lower at low temperature than normal room temperature. The fatigue crack growth threshold at low temperatures is higher than the room temperature threshold. Good resistance to crack initiation and crack growth of EH36 steel at low temperature are verified by the experiments.

• Record URL:
  https://doi.org/10.1016/j.oceaneng.2020.107789
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0029801820307654
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2020 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Wang, Ke
  • Wu, Li
  • Li, Yong-zheng
  • Qin, Chuang
• Publication Date: 2020-11-15

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Serial:
  • Ocean Engineering
  • Volume: 216
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Experiments; Fatigue (Mechanics); Fatigue cracking; Icebreaking; Low temperature; Polar regions
• Subject Areas: Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 01753204
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 2020 9:58AM