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

被引：9
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
[1]   On the current research progress of metallic materials fabricated by laser powder bed fusion process: a review [J].
Abd-Elaziem, Walaa ;
Elkatatny, Sally ;
Abd-Elaziem, Abd-Elrahim ;
Khedr, Mahmoud ;
Abd El-baky, Marwa A. ;
Hassan, Mohamed Ali ;
Abu-Okail, Mohamed ;
Mohammed, Moustafa ;
Jarvenpaa, Antti ;
Allam, Tarek ;
Hamada, Atef .
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2022, 20 :681-707
[2]   High cycle fatigue micromechanical behavior of dual phase steel: Damage initiation, propagation and final failure [J].
Anbarlooie, B. ;
Hosseini-Toudeshky, H. ;
Kadkhodapour, J. .
MECHANICS OF MATERIALS, 2017, 106 :8-19
[3]  
[Anonymous], 2017, ASTM INT, DOI [10.1520/E0003-11R17, DOI 10.1520/E0003-11R17]
[4]   Plasticity of initially textured hexagonal polycrystals at high homologous temperatures: application to titanium [J].
Balasubramanian, S ;
Anand, L .
ACTA MATERIALIA, 2002, 50 (01) :133-148
[5]   Failure mechanisms of automotive metallic alloys in very high cycle fatigue range [J].
Bayraktar, Emin ;
Garcias, Israel Marines ;
Bathias, Claude .
INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (11) :1590-1602
[6]   A comparison of fatigue strength sensitivity to defects for materials manufactured by AM or traditional processes [J].
Beretta, S. ;
Romano, S. .
INTERNATIONAL JOURNAL OF FATIGUE, 2017, 94 :178-191
[7]   Slip and fatigue crack formation processes in an α/β titanium alloy in relation to crystallographic texture on different scales [J].
Bridier, F. ;
Villechaise, P. ;
Mendez, J. .
ACTA MATERIALIA, 2008, 56 (15) :3951-3962
[8]   Analysis of the different slip systems activated by tension in a α/β titanium alloy in relation with local crystallographic orientation [J].
Bridier, F ;
Villechaise, P ;
Mendez, J .
ACTA MATERIALIA, 2005, 53 (03) :555-567
[9]   The role of crack origin size and early stage crack growth on high cycle fatigue of powder metallurgy Ti-6Al-4V alloy [J].
Cao, Fei ;
Chandran, K. S. Ravi .
INTERNATIONAL JOURNAL OF FATIGUE, 2017, 102 :48-58
[10]   Effects of microstructural inhomogeneities and micro-defects on tensile and very high cycle fatigue behaviors of the friction stir welded ZK60 magnesium alloy joint [J].
Chen, Yao ;
He, Chao ;
Yang, Kun ;
Zhang, Hong ;
Wang, Chong ;
Wang, Qingyuan ;
Liu, Yongjie .
INTERNATIONAL JOURNAL OF FATIGUE, 2019, 122 :218-227
1234567