Subsurface crack formation and propagation of fretting fatigue in Ni-based single-crystal superalloys

被引：12
|
作者：
Han, Qi-Nan [1 ,2 ,3 ]
Rui, Shao-Shi [3 ]
Qiu, Wenhui [4 ]
Su, Yue [3 ]
Ma, Xianfeng [5 ]
He, Zhiwu [3 ]
Cui, Haitao [1 ,2 ]
Zhang, Hongjian [1 ,2 ]
Shi, Hui-Ji [3 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing 210016, Jiangsu, Peoples R China
[2] Minist Ind & Informat Technol, Aeroengine Thermal Environm & Struct Key Lab, Nanjing, Jiangsu, Peoples R China
[3] Tsinghua Univ, Sch Aerosp Engn, AML, Room N-513,Mong Man Wai Bldg Sci & Technol, Beijing, Peoples R China
[4] Midea Grp Co Ltd, Residential Air Conditioning Div, Foshan, Peoples R China
[5] Sun Yat Sen Univ, Sinofrench Inst Nucl Engn & Technol, Zhuhai, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2019年 / 42卷 / 11期
基金：
中国国家自然科学基金;
关键词：
crystal plasticity simulation; fretting fatigue; Ni-based single-crystal superalloys; subsurface crack; LOCALIZED DEFORMATION; MECHANICS APPROACH; BEHAVIOR; NICKEL; ORIENTATION; PLASTICITY; NUCLEATION; CONTACT;
D O I：
10.1111/ffe.13049
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fretting fatigue crack formation and propagation behaviors of Ni-based single-crystal (NBSX) superalloys are investigated in this paper. Subsurface crack formation process is revealed by in situ fretting fatigue experiment. The crack is observed to form on subsurface area, then propagates to the contact surface. Inclusions in materials are found to have obvious effects on crack propagation, and slip lines are closely related to the crack propagation direction. Crystal plastic finite element method (CPFEM) simulation is used to simulate crack formation position. The accumulative plastic strain peaks at the edge of contact zone and the subsurface area. The results show that the CPFEM simulation and in situ observation achieve good agreements.
引用
收藏
页码：2520 / 2532
页数：13
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