Very high cycle fatigue behavior of laser powder bed fusion additively manufactured Ti6Al4V alloy at elevated temperature

被引：10
作者：
Peng, Haotian [1 ,2 ]
Liu, Fulin [1 ,3 ]
Chen, Yao [1 ,2 ]
He, Chao [1 ,2 ]
Li, Lang [1 ,2 ]
Zhang, Hong [1 ,2 ]
Wang, Chong [1 ,2 ]
Wang, Qingyuan [1 ,2 ]
Liu, Yongjie [1 ,2 ]
机构：
[1] Coll Architecture & Environm, Failure Mech & Engn Disaster Prevent Key Lab Sichu, Chengdu 610207, Peoples R China
[2] Sichuan Univ, Coll Architecture & Environm, MOE Key Lab Deep Earth Sci & Engn, Chengdu 610065, Peoples R China
[3] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 171卷
关键词：
Laser powder bed fusion; Ti6Al4V alloy; Very high cycle fatigue; Crack initiation; High temperature; ALPHA/BETA-TITANIUM-ALLOY; CRACK INITIATION; TI-6AL-4V; STRENGTH; SLIP; PROPAGATION; MECHANISM; DEFECTS; FAILURE; GROWTH;
D O I：
10.1016/j.ijfatigue.2023.107599
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The crack initiation mechanism of laser powder bed fusion (LPBF) Ti6Al4V was investigated at elevated tem-perature up to very high cycle fatigue (VHCF) regime. The competition concerning defect location is elaborated using the stress intensity factor range and Z-parameter model. Additionally, localized high stress near the defects is responsible for plastic strain localization in the non-prior alpha' region, following the grain refinement and fragmentation in the larger grains nearby, which is strongly associated with the formation of microcracks and fine granular area. Meanwhile, the process is facilitated by reducing dislocation resistance and activating mul-tiple slip systems due to high temperature.
引用
收藏
页数：16
相关论文
共 70 条
[51]   Controlling the tensile and fatigue properties of selective laser melted Ti-6Al-4V alloy by post treatment [J].
Su, Chenyu ;
Yu, Hanchen ;
Wang, Zemin ;
Yang, Jingjing ;
Zeng, Xiaoyan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 857 (857)
[52]   Characteristic and mechanism of crack initiation and early growth of an additively manufactured Ti-6Al-4V in very high cycle fatigue regime [J].
Sun, Chengqi ;
Chi, Weiqian ;
Wang, Wenjing ;
Duan, Yan .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2021, 205
[53]   Mechanical properties and deformation mechanisms of martensitic Ti6Al4V alloy processed by laser powder bed fusion and water quenching [J].
Sun, Shoujin ;
Zhang, Duyao ;
Palanisamy, Suresh ;
Liu, Qianchu ;
Dargusch, Matthew S. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 839
[54]   A DISLOCATION MODEL FOR FATIGUE CRACK INITIATION [J].
TANAKA, K ;
MURA, T .
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1981, 48 (01) :97-103
[55]   A study of the micro structural evolution during selective laser melting of Ti-6Al-4V [J].
Thijs, Lore ;
Verhaeghe, Frederik ;
Craeghs, Tom ;
Van Humbeeck, Jan ;
Kruth, Jean-Pierre .
ACTA MATERIALIA, 2010, 58 (09) :3303-3312
[56]   High cycle fatigue behaviour of Ti-6Al-4V alloy at elevated temperatures [J].
Tokaji, K .
SCRIPTA MATERIALIA, 2006, 54 (12) :2143-2148
[57]   Effect of temperature on high-cycle fatigue and very high cycle fatigue behaviours of a low-strength Cr-Ni-Mo-V steel welded joint [J].
Wu, W. ;
Zhu, M. -L. ;
Liu, X. ;
Xuan, F. -Z. .
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2017, 40 (01) :45-54
[58]   Duality of the fatigue behavior and failure mechanism in notched specimens of Ti-7Mo-3Nb-3Cr-3Al alloy [J].
Wu, Zhihong ;
Kou, Hongchao ;
Chen, Nana ;
Zhang, Mengqi ;
Hua, Ke ;
Fan, Jiangkun ;
Tang, Bin ;
Li, Jinshan .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2020, 50 :204-214
[59]   Microstructural tailoring of As-Selective Laser Melted Ti6Al4V alloy for high mechanical properties [J].
Xu, Yangli ;
Zhang, Dongyun ;
Guo, Yanwu ;
Hu, Songtao ;
Wu, Xuping ;
Jiang, Yijian .
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 816
[60]   Fatigue limit prediction model and fatigue crack growth mechanism for selective laser melting Ti6Al4V samples with inherent defects [J].
Xu, Zhongwei ;
Liu, An ;
Wang, Xishu ;
Liu, Bin ;
Guo, Minghai .
INTERNATIONAL JOURNAL OF FATIGUE, 2021, 143
1234567