Finite Element Simulation of Mechanical Properties of Selective Laser Melted Ti-6Al-4V Alloy at High Strain Rates

LI Ying; WANG Shaohui; ZHANG Ting; LIU Chuanxin; WU Haihui; CHAI Xianghai

doi:10.11973/jxgccl202003013

Materials and Mechanical Engineering > 2020 > 44(3): 68-72. > DOI: 10.11973/jxgccl202003013

LI Ying, WANG Shaohui, ZHANG Ting, LIU Chuanxin, WU Haihui, CHAI Xianghai. Finite Element Simulation of Mechanical Properties of Selective Laser Melted Ti-6Al-4V Alloy at High Strain Rates[J]. Materials and Mechanical Engineering, 2020, 44(3): 68-72. DOI: 10.11973/jxgccl202003013

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Finite Element Simulation of Mechanical Properties of Selective Laser Melted Ti-6Al-4V Alloy at High Strain Rates

1. Shanghai Engineering Research Center of Civil Aero Engine, AECC Commercial Aircraft Engine Co., Ltd., Shanghai 200241, China;
2. Key Laboratory of High Performance Fibers&Products, Ministry of Education, Donghua University, Shanghai 201620, China

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Received Date: February 10, 2019
Revised Date: February 19, 2020

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Ti-6Al-4V alloy was prepared by selective laser melting (SLM) technique. After post vacuum annealing and hot isostatic pressing treatment, the mechanical properties of the alloy at quasi-static and high strain rates (500-3 000 s^-1) were studied. The calibration of bi-linear material model was implemented; the obtained material parameters were applied to the finite element simulation of Hopkinson compression test, and the simulation results were compared with the test results. The results show that the microstructure of SLM formed alloy after vacuum annealing and hot isostatic pressing treatment was composed of α phase and β phase with the net basket structure morphology. Compared with that under quasi-static condition, the percentage elongation after fracture of the SLM formed alloy at high strain rates was improved significantly. The normalized true stress-true strain curve obtained by simulation was consistent with test results, and the average relative error was 2.5%, indicating the material parameters was recommended for the subsequent transient impact simulation analysis.
- selective laser melting,
- Ti-6Al-4V alloy,
- high strain rate,
- Hopkinson bar,
- dynamic property

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[1]	于慧臣,吴学仁. 航空发动机设计用材料数据手册(第三册)[M]. 北京:航空工业出版社,2008.
[2]	SHIPLEY H, MCDONNELL D, CULLETON M, et al. Optimisation of process parameters to address fundamental challenges during selective laser melting of Ti-6Al-4V: A review[J]. International Journal of Machine Tools and Manufacture, 2018, 128:1-20.
[3]	林鑫, 黄卫东. 应用于航空领域的金属高性能增材制造技术[J]. 中国材料进展, 2015, 34(9): 684-688.
[4]	张渝, 侯慧鹏, 雷力明. 高温合金增材制造标准分析[J]. 材料导报, 2017, 31(1): 62-65.
[5]	宣海军,陆晓,洪伟荣,等. 航空发动机机匣包容性研究综述[J]. 航空动力学报, 2010, 25(8): 1860-1870.
[6]	FAN Z C, FENG H W. Study on selective laser melting and heat treatment of Ti-6Al-4V alloy[J]. Results in Physics, 2018, 10: 660-664.
[7]	LEUDERS S, THÖNE M, RIEMER A, et al. On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance[J]. International Journal of Fatigue, 2013,48(3) 300-307.
[8]	KASPEROVICH G, HAUSMANN J. Improvement of fatigue resistance and ductility of TiAl6V4 processed by selective laser melting[J]. Journal of Matererials Processing Technology, 2015, 220: 202-214.
[9]	李颖,王志强,柴象海,等.航空发动机鸟撞分析中的应变率相关材料模型标定及使用研究[J].航空科学技术,2014(9):66-70.
[10]	KARIEM M A, BEYNON J H, RUAN D.Misalignment effect in the split Hopkinson pressure bar technique[J]. International Journal of Impact Engineering,2012,47:60-70.

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Finite Element Simulation of Mechanical Properties of Selective Laser Melted Ti-6Al-4V Alloy at High Strain Rates

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