An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions
Fatigue life estimation on hard α inclusion induced failure in titanium alloy remains in long-term interest, due to the local stress distribution induced by the interaction between inclusion and surface as well as the scatter in randomly oriented grains. In this paper, an anisotropic mesoscale model...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-08-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520303786 |
| _version_ | 1828824168302379008 |
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| author | Dianyin Hu Jinchao Pan Jianxing Mao Xiaojun Guo Haibin Ji Rongqiao Wang |
| author_facet | Dianyin Hu Jinchao Pan Jianxing Mao Xiaojun Guo Haibin Ji Rongqiao Wang |
| author_sort | Dianyin Hu |
| collection | DOAJ |
| description | Fatigue life estimation on hard α inclusion induced failure in titanium alloy remains in long-term interest, due to the local stress distribution induced by the interaction between inclusion and surface as well as the scatter in randomly oriented grains. In this paper, an anisotropic mesoscale model is established to describe the fatigue failure of typical bi-phase titanium alloy with hard α inclusion. The stress-life criterion is formulated by dislocation stress field elaborated from anisotropic fracture mechanics, taking in random variables to represent the scatter in grain size and orientation. Parameters include microstructures characterized by microscope, dislocation slip properties evaluated by molecular dynamics (MD) simulation, and information of activated slip system via crystal plasticity finite element method (CPFEM) simulation. By using the data of specimens with and without inclusion, the proposed model exhibits excellent capability in fatigue life prediction for a wide range of stress ratio. This work draws insights on physics-based life prediction for inclusion induced fatigue failure. |
| first_indexed | 2024-12-12T13:51:45Z |
| format | Article |
| id | doaj.art-dca4aaa08b7944a996ee4fac979eadb6 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-12T13:51:45Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-dca4aaa08b7944a996ee4fac979eadb62022-12-22T00:22:33ZengElsevierMaterials & Design0264-12752020-08-01193108844An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusionsDianyin Hu0Jinchao Pan1Jianxing Mao2Xiaojun Guo3Haibin Ji4Rongqiao Wang5Aero-engine Research Institute, Beihang University, Beijing 100191, China; Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, ChinaSchool of Energy and Power Engineering, Beihang University, Beijing 100191, ChinaAero-engine Research Institute, Beihang University, Beijing 100191, China; Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China; Corresponding author at: Aero-engine Research Institute, Beihang University, Beijing 100191, China.China Aviation Powerplant Research Institute, Zhuzhou 412002, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaBeijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China; School of Energy and Power Engineering, Beihang University, Beijing 100191, ChinaFatigue life estimation on hard α inclusion induced failure in titanium alloy remains in long-term interest, due to the local stress distribution induced by the interaction between inclusion and surface as well as the scatter in randomly oriented grains. In this paper, an anisotropic mesoscale model is established to describe the fatigue failure of typical bi-phase titanium alloy with hard α inclusion. The stress-life criterion is formulated by dislocation stress field elaborated from anisotropic fracture mechanics, taking in random variables to represent the scatter in grain size and orientation. Parameters include microstructures characterized by microscope, dislocation slip properties evaluated by molecular dynamics (MD) simulation, and information of activated slip system via crystal plasticity finite element method (CPFEM) simulation. By using the data of specimens with and without inclusion, the proposed model exhibits excellent capability in fatigue life prediction for a wide range of stress ratio. This work draws insights on physics-based life prediction for inclusion induced fatigue failure.http://www.sciencedirect.com/science/article/pii/S0264127520303786Multiscale modelingFatigue failureTitanium alloyDuplex microstructureHard α inclusion |
| spellingShingle | Dianyin Hu Jinchao Pan Jianxing Mao Xiaojun Guo Haibin Ji Rongqiao Wang An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions Materials & Design Multiscale modeling Fatigue failure Titanium alloy Duplex microstructure Hard α inclusion |
| title | An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| title_full | An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| title_fullStr | An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| title_full_unstemmed | An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| title_short | An anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| title_sort | anisotropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions |
| topic | Multiscale modeling Fatigue failure Titanium alloy Duplex microstructure Hard α inclusion |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520303786 |
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