Study fatigue crack initiation in TiB2/Al-Cu-Mg composite by in-situ SEM and X-ray microtomography

被引：31
|
作者：
Geng, Jiwei [1 ,4 ]
Li, Yugang [1 ]
Xiao, Hongyu [1 ]
Li, Hongping [2 ]
Sun, Huanhuan [3 ]
Chen, Dong [1 ,4 ]
Wang, Mingliang [1 ]
Wang, Haowei [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[2] Shanghai Aircraft Design & Res Inst, Shanghai 201203, Peoples R China
[3] Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China
[4] Anhui Prov Engn Res Ctr Aluminium Matrix Composit, Huaibei 235000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 142卷
基金：
中国博士后科学基金;
关键词：
Particle-reinforced aluminium matrix composite; Microstructures; In-situ SEM; Fatigue crack initiation; X-ray microtomography; PARTICLE-SIZE; MECHANICAL-PROPERTIES; TIB2; PARTICLES; BEHAVIOR; AL; ALLOY; PROPAGATION; STRESS; DEFORMATION; TOMOGRAPHY;
D O I：
10.1016/j.ijfatigue.2020.105976
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work, the fatigue initiation in a particle-reinforced aluminium matrix composite was investigated. The fatigue cracks mostly initiate at multiple sites associated with TiB2 and second phases (S/theta). Only few cracks initiate from individual TiB2, and they are caused by matrix fracture close to the high density dislocation zones around TiB2. Furthermore, the growth capability of initiated cracks is dependent on their stress intensity factors at crack tip. Only crack initated from largest-sized (S/theta + TiB2) cluster is developed into main crack. During main crack evolution, the small crack grows along slip traces and retarded by grain boundaries and/or TiB2.
引用
收藏
页数：13
相关论文
共 50 条
  • [1] Optimizing strength and fatigue crack propagation resistance of in-situ TiB2/Al-Cu-Mg composite sheet
    Pu, Qingqing
    Wang, Zhiping
    Luo, Tai
    Li, Yugang
    Geng, Jiwei
    Xia, Peikang
    Li, Xianfeng
    Chen, Dong
    Wang, Hongze
    Wang, Haowei
    INTERNATIONAL JOURNAL OF FATIGUE, 2024, 179
  • [2] Effects of TiB2 particles on aging behavior of in-situ TiB2/Al-Cu-Mg composites
    Hong, Tianran
    Li, Xianfeng
    Wang, Haowei
    Chen, Dong
    Wang, Kui
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 624 : 110 - 117
  • [3] Experimental study of the mechanisms of nanoparticle influencing the fatigue crack growth in an in-situ TiB2/Al-Zn-Mg-Cu composite
    Ma, Yu
    Geng, Jiwei
    Chen, Zhe
    Wang, Mingliang
    Chen, Dong
    Ji, Gang
    Ji, Vincent
    Wang, Haowei
    ENGINEERING FRACTURE MECHANICS, 2019, 207 : 23 - 35
  • [4] Microstructural correlated damage mechanisms of the high-cycle fatigued in-situ TiB2/Al-Cu-Mg composite
    Geng, Jiwei
    Liu, Gen
    Wang, Feifei
    Hong, Tianran
    Dai, Jichun
    Wang, Mingliang
    Chen, Dong
    Ma, Naiheng
    Wang, Haowei
    MATERIALS & DESIGN, 2017, 135 : 423 - 438
  • [5] Investigation on microstructure and mechanical properties of in-situ TiB2/Al-Cu-Mg composite profile fabricated by porthole die extrusion
    Zhang, Shugang
    Chen, Liang
    Li, Zhigang
    Zhao, Guoqun
    Zhang, Cunsheng
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 786
  • [6] Insight into the recrystallization behavior and precipitation reaction of in-situ nano TiB2/Al-Cu-Mg composite during heat treatment
    Dai, Shuai
    Zhang, Huawei
    Bian, Zeyu
    Geng, Jiwei
    Chen, Zhe
    Wang, Lei
    Wang, Mingliang
    Wang, Haowei
    MATERIALS CHARACTERIZATION, 2021, 181
  • [7] Effect of cryogenic pre-treatment on aging behavior of in-situ TiB2/Al-Cu-Mg composites
    Hong, Tianran
    Shen, Yanwei
    Geng, Jiwei
    Chen, Dong
    Li, Xianfeng
    Zhou, Cong
    MATERIALS CHARACTERIZATION, 2016, 119 : 40 - 46
  • [8] Tuning the microstructure features of in-situ nano TiB2/Al-Cu-Mg composites to enhance mechanical properties
    Geng, Jiwei
    Liu, Gen
    Hong, Tianran
    Wang, Mingliang
    Chen, Dong
    Ma, Naiheng
    Wang, Haowei
    JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 775 : 193 - 201
  • [9] Achieving excellent strength of the LPBF additively manufactured Al-Cu-Mg composite via in-situ mixing TiB2 and solution treatment
    Sun, Tengteng
    Chen, Jian
    Wu, Yi
    Wang, Mingliang
    Fu, Yanan
    Wang, Hongze
    Wang, Haowei
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 850
  • [10] Investigation on peripheral coarse grains and precipitation behavior of in-situ TiB2/Al-Cu-Mg composites with various Mg contents
    Chen, Liang
    Zhang, Shugang
    Li, Zhigang
    Zhao, Guoqun
    Zhang, Cunsheng
    Lin, Jun
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2021, 826
12345