A physically based constitutive model of Ti-6Al-4 V and application in the SPF/DB process for a pyramid lattice sandwich panel

• Autorzy: Wu Yong , Wu Dipeng , Ma Jia , Xiao Wenchao , Zheng Kailun , Chen Minghe

Identyfikatory

DOI

10.1007/s43452-021-00260-0

• Języki publikacji: EN

Abstrakty

EN

The physically based constitutive modeling, simulation and experimental of a superplastic forming and diffusion bonding (SPF/DB) process were studied for the manufacture of a pyramid lattice Ti-6Al-4 V sandwich panel structure. The high-temperature deformation behaviors of Ti-6Al-4 V were studied using uniaxial tensile tests at various temperatures 860  – 950 °C and strain rates 0.0001 s−1 ~ 0.01 s−1, corresponding microstructures were observed using optical microscope (OM) and Electron Backscattered Diffraction (EBSD). Based on obtained flow behavior and microstructure, a set of physically based constitutive equations of the Ti-6Al-4 V was established and used to simulate the superplastic forming for a pyramid lattice sandwich panel. The thinning ratios, dislocation densities, grain sizes and damage distributions of the sandwich panels were successfully predicted by the finite element (FE) simulation. A pyramid lattice Ti-6Al-4 V alloy sandwich panel with good dimensional accuracy and mechanical properties was manufactured by the SPF/DB process at 920 °C with a gas loading path of 0.0005 MPa/s. The maximum thickness thinning ratio, damage factor and relative grain size at the ribs of the sandwich panel were 26.3%, 6.7% and 0.94, respectively. The established constitutive model aids the FE simulations of SPF/DB manufacture of sandwich panels’ structure enabling both macro- and micro-properties to be synergistically controlled and guides the practical process optimizations.

Słowa kluczowe

EN

pyramid lattice structure; damage evolution; constitutive modeling; SPF/DB

PL

modelowanie konstytutywne; uszkodzenie; płyta warstwowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2021
• Tom: Vol. 21, no. 3
• Strony: 366--382
• Opis fizyczny: Bibliogr. 35 poz., rys., wykr.

Twórcy

autor

Wu Yong

• College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

• https://orcid.org/0000-0003-1415-6551

autor

Wu Dipeng

• College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

autor

Ma Jia

• College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

autor

Xiao Wenchao

• School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China

autor

Zheng Kailun

• Mechanical Engineering Department, Dalian University of Technology, Dalian 116024, China

autor

Chen Minghe

• College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)