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Prediction method of fatigue crack growth rate of HTS-A steel at low temperature
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Jia-qi LIU1, Guang-en LUO1, Guang-shan PAN2, Jun-cheng LIU1, Shuang LI1, Shuai ZHANG1
Journal of Ship Mechanics | 2024, 28(2) : 273 - 282
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Journal of Ship Mechanics | 2024, 28(2): 273-282
• Structural Mechanics •
Prediction method of fatigue crack growth rate of HTS-A steel at low temperature
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Jia-qi LIU1, Guang-en LUO1, Guang-shan PAN2, Jun-cheng LIU1, Shuang LI1, Shuai ZHANG1
Affiliations
  • 1.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • 2.China Ship Scientific Research Center, Wuxi 214082, China
Published: 2024-02-20 doi: 10.3969/j.issn.1007-7294.2024.02.010
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Aiming at the fatigue crack growth behavior of marine HTS-A steel at low temperature, the CT sample of HTS-A steel with a thickness of 25 mm was adopted in this paper, and the fatigue crack growth tests at room temperature and different low temperature environments were carried out. On the basis of experimental research, a low-temperature fatigue crack growth prediction method with improved McEvily formula including temperature term was proposed. The results show that the fatigue crack growth rate of HTS-A steel decreases gradually with the temperature decrease. At -60 ℃, the low temperature fatigue crack growth rate of HTS-A steel does not show low temperature brittle fracture, and the test results provide data reference for the low temperature fatigue design of marine HTS-A steel. At the same time, the low temperature test data of HTS-A steel in this paper and the low temperature test data of titanium alloy in the literature were used to verify the rationality and correctness of the low temperature fatigue crack growth rate prediction method. The method can be used to predict the metal fatigue crack growth rate in different low temperature environments.

fatigue crack growth rate  /  HTS-A steel  /  low temperature fatigue test  /  prediction method
Jia-qi LIU, Guang-en LUO, Guang-shan PAN, Jun-cheng LIU, Shuang LI, Shuai ZHANG. Prediction method of fatigue crack growth rate of HTS-A steel at low temperature[J]. Journal of Ship Mechanics, 2024 , 28 (2) : 273 -282 . DOI: 10.3969/j.issn.1007-7294.2024.02.010
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.02.010
  • Receive Date：2023-08-10
  • Online Date：2026-03-21
  • Published：2024-02-20
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  • Received：2023-08-10
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Affiliations
    1.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    2.China Ship Scientific Research Center, Wuxi 214082, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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