Yang Guang, Liu Jiapeng, Qin Lanyun, Ren Yuhang, Wang Wei. Study on microstructure and high cycle fatigue property of laser deposited TA15 titanium alloy[J]. Infrared and Laser Engineering, 2018, 47(11): 1106003-1106003(6). doi: 10.3788/IRLA201847.1106003
| Citation:
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Yang Guang, Liu Jiapeng, Qin Lanyun, Ren Yuhang, Wang Wei. Study on microstructure and high cycle fatigue property of laser deposited TA15 titanium alloy[J]. Infrared and Laser Engineering, 2018, 47(11): 1106003-1106003(6). doi: 10.3788/IRLA201847.1106003
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Study on microstructure and high cycle fatigue property of laser deposited TA15 titanium alloy
- 1.
Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Shenyang 110136,China;
- 2.
Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Mianyang 621700,China
- Received Date: 2018-06-10
- Rev Recd Date:
2018-07-28
- Publish Date:
2018-11-25
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Abstract
The microstructure of laser deposited TA15 titanium alloy was investigated and high cycle fatigue property including crack initiation and crack propagation at room temperature was analyzed. The fatigue fracture surface and microstructure of longitudinal section were examined by optical microscopy (OM) and scanning electron microscopy(SEM). The results indicate that as-deposited macrostructure consists of directional column grains with extremely fine basket-weave microstructure. After double-annealing treatment, coarse lamellar-like basket-weave microstructure was obtained. The crack initiation region was characterized by crystallographic cleavage facets of lamellar. The crack tended to propagate tortuously, which was related to different orientations of lamellar. Its propagation direction in certain areas was parallel or approximately perpendicular to lamellar and the secondary cracks in the crack propagation region helped consuming energy and improved the fatigue life.
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References
|
[1]
|
Yang Qiang, Lu Zhongliang, Huang Fuxiang, et al. Research on status and development trend of laser additive manufacturing[J]. Aeronaut Manuf Techno, 2016, 507(12):26-31. (in Chinese) |
|
[2]
|
Li Liang, Sun Jianke, Meng Xiangjun, et al. Application state and prospects for titanium alloys[J]. Tit Ind Prog, 2004, 21(5):19-24. (in Chinese) |
|
[3]
|
Wang F, Williams S, Colegrove P, et al. Microstructure and mechanical properties of wire and arc additive manufactured Ti-6Al-4V[J]. Metallurgical and Materials Transactions A, 2013, 44:968-977. |
|
[4]
|
Zhang Jikui, Wang Xueyuan. Fatigue crack propagation behaviour in wire+arc additive manufactured Ti-6Al-4V:Effects of microstructure and residual stress[J]. Materials and Design, 2016, 90:551-561. |
|
[5]
|
Leuders S, Thone M, Riemer A, et al. On the mechanical behavior of titanium alloy TiAl6V4 manufactured by selective laser melting:Fatigue resistance and crack growth performance[J]. Int J Fatigue, 2013, 48:300-307. |
|
[6]
|
Wycisk E, Solbach A, Siddique S, et al. Effects of defects in laser additive manufacturing Ti-6Al-4V on fatigue properties[J]. Physics Procedia, 2014, 56:371-378. |
|
[7]
|
He Ruijun, Wang Huaming. HCF properties of laser deposited Ti-6Al-2Zr-Mo-V alloy[J]. Acta Aeronaut et Astronaut Sin, 2010, 31(7):1488-1493. (in Chinese) |
|
[8]
|
Shi X H, Zeng W D, Shi C L, et al. Study on fatigue crack growth rates of Ti-5Al-5Mo-5V-1Cr-1Fe titanium alloy with basket-weave microstructure[J]. Mat Sci Eng A, 2015, 621:143-148. |
|
[9]
|
Jin O, Mall S. Effects of microstructure on short crack growth behavior of Ti-6Al-2Sn-4Zr-2Mo-0.1Si alloy[J]. Materials Science and Engineering, 2003, A359:356-367. |
|
[10]
|
Sansoz F, Ghonem H. Effects of loading frequency on fatigue crack growth mechanisms in a/b Ti microstructure with large colony size[J]. Materials Science and Engineering, 2003, A356:81-92. |
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