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Atomic understanding of effect of rhenium on thermomechanical fatigue properties of Ni-based single crystal superalloys
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Wenping Wua, b, *, Zijun Dinga, Zhiqi Xuea, Yuan Gaoc, d, Chao Yue, Guozheng Kange
Progress in Natural Science: Materials International | 2026, 36(1) : 205 - 214
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Progress in Natural Science: Materials International | 2026, 36(1): 205-214
• Research Article •
Atomic understanding of effect of rhenium on thermomechanical fatigue properties of Ni-based single crystal superalloys
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Wenping Wua, b, *, Zijun Dinga, Zhiqi Xuea, Yuan Gaoc, d, Chao Yue, Guozheng Kange
Affiliations
  • aDepartment of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, 430072, China
  • bWuhan University Shenzhen Research Institute, Shenzhen, 518057, China
  • cRailway Architecture Research Institute, China Academy of Railway Science Group Co., Ltd, Beijing, 10081, China
  • dNational Key Laboratory of High-speed Railway Track System, Beijing, 100081, China
  • eApplied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu, 610031, China
Published: 2026-02-22 doi: 10.1016/j.pnsc.2026.02.001
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In this paper, atomic simulation of the thermomechanical fatigue (TMF) behavior of Ni-based single crystal superalloys has been achieved, and the effect of Rhenium (Re) on the TMF properties are studied by molecular dynamics (MD) simulation. The reasons why 3%Re improving TMF properties of superalloys are explained from an atomic perspective. The results show that adding 3%Re to the superalloys can increase the cyclic stress amplitude and plastic deformation resistance, reduce the dislocation density and plastic strain energy density, and thereby improve the fatigue life of superalloys. The microstructure evolution reveals that the improvement of TMF properties in superalloys mainly depends on the pinning and dragging effects of Re on dislocation motion. Due to the pinning and dragging effects of Re, the stability of microstructure is significantly enhanced, leading to a reduction in plastic deformation and thus improving the TMF mechanical properties and fatigue life of superalloys. The research results will contribute to a deeper understanding of the TMF mechanisms and Re effects of superalloys.

Ni-based single crystal superalloys  /  Thermomechanical fatigue  /  Re effects  /  Dislocation motion  /  Molecular dynamics simulation
Wenping Wu, Zijun Ding, Zhiqi Xue, Yuan Gao, Chao Yu, Guozheng Kang. Atomic understanding of effect of rhenium on thermomechanical fatigue properties of Ni-based single crystal superalloys[J]. Progress in Natural Science: Materials International, 2026 , 36 (1) : 205 -214 . DOI: 10.1016/j.pnsc.2026.02.001
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Funding
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  • National Natural Science Foundation of China(12172259; 11772236)
  • Guangdong Basic and Applied Basic Research Foundation, China(2023A1515012745; 2024A1515012185)
  • Open Project of National Key Laboratory of High-speed Railway Track System, China(2025YJ180)
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Year 2026 volume 36 Issue 1
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7
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Article Info
doi: 10.1016/j.pnsc.2026.02.001
  • Receive Date：2025-10-22
  • Online Date：2026-06-03
  • Published：2026-02-22
Article Data
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History
  • Received：2025-10-22
  • Revised：2026-01-27
  • Accepted：2026-02-02
Funding
National Natural Science Foundation of China(12172259; 11772236)
Guangdong Basic and Applied Basic Research Foundation, China(2023A1515012745; 2024A1515012185)
Open Project of National Key Laboratory of High-speed Railway Track System, China(2025YJ180)
Affiliations
    aDepartment of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, 430072, China
    bWuhan University Shenzhen Research Institute, Shenzhen, 518057, China
    cRailway Architecture Research Institute, China Academy of Railway Science Group Co., Ltd, Beijing, 10081, China
    dNational Key Laboratory of High-speed Railway Track System, Beijing, 100081, China
    eApplied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu, 610031, China

Corresponding:

* Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, 430072, China. E-mail address: (W. Wu).
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https://castjournals.cast.org.cn/joweb/pnsmi/EN/10.1016/j.pnsc.2026.02.001
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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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