Dynamic mechanical properties and constitutive relationship of selective laser melted Ti-6Al-4V alloy

ZHU Lei; LIU Yang; MENG Jinhui; LI Zhiguo; HU Jianbo; LI Guoping; WANG Yonggang

doi:10.11883/bzycj-2021-0227

Volume 42 Issue 9

Sep. 2022

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Article Navigation > Explosion And Shock Waves > 2022 > 42(9): 091405

ZHU Lei, LIU Yang, MENG Jinhui, LI Zhiguo, HU Jianbo, LI Guoping, WANG Yonggang. Dynamic mechanical properties and constitutive relationship of selective laser melted Ti-6Al-4V alloy[J]. Explosion And Shock Waves, 2022, 42(9): 091405. doi: 10.11883/bzycj-2021-0227

Citation:

ZHU Lei, LIU Yang, MENG Jinhui, LI Zhiguo, HU Jianbo, LI Guoping, WANG Yonggang. Dynamic mechanical properties and constitutive relationship of selective laser melted Ti-6Al-4V alloy[J]. Explosion And Shock Waves, 2022, 42(9): 091405. doi: 10.11883/bzycj-2021-0227

Citation:

ZHU Lei, LIU Yang, MENG Jinhui, LI Zhiguo, HU Jianbo, LI Guoping, WANG Yonggang. Dynamic mechanical properties and constitutive relationship of selective laser melted Ti-6Al-4V alloy[J]. Explosion And Shock Waves, 2022, 42(9): 091405. doi: 10.11883/bzycj-2021-0227

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Dynamic mechanical properties and constitutive relationship of selective laser melted Ti-6Al-4V alloy

doi: 10.11883/bzycj-2021-0227

ZHU Lei^{1, 2
,},
LIU Yang^{1, 2, 3
,
,},
MENG Jinhui^{1, 2},
LI Zhiguo³,
HU Jianbo³,
LI Guoping²,
WANG Yonggang^{1, 2}

1.
Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China
2.
Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, Zhejiang, China
3.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2021-06-04
Rev Recd Date: 2021-11-18

Available Online: 2022-04-28

Publish Date: 2022-09-29

Abstract

Abstract

Aiming at understanding the dynamic mechanical properties of titanium alloys additively manufactured by selective laser melting (SLM), quasi-static and dynamic impact experiments were carried out on selective laser melted Ti-6Al-4V alloy at different temperatures using thermal simulation material testing machine and SHPB device, respectively. Based on the experimental results, the parameters of Johnson-Cook constitutive model are fitted. Meanwhile, the mechanical behaviors of titanium alloy at high temperature and high strain rates were simulated by finite element method. The results show that the yield strength of selective laser melted Ti-6Al-4V alloy is enhanced significantly compared with those of wrought or forged counterparts, Moreover, it exhibits significant strain rate strengthening effect and thermal softening effect. The finite element simulation results are close to the experimental results and further validate the constitutive model parameters, which could provide a theoretical basis for expanding the application of selective laser melting technique and its products.
- selective laser melting,
- Ti-6Al-4V alloy,
- dynamic mechanical properties,
- Johnson-Cook constitutive model,
- finite element simulation

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References(30)

References

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