Parameter optimization and compressive property of the TC31 titanium alloy X‑type lattice structure by the superplastic forming/diffusion bonding process

• Autorzy: Wu Dipeng , Chen Minghe , Fan Ronglei , Xiao Wenchao , Wu Yong

Identyfikatory

DOI

10.1007/s43452-023-00642-6

• Języki publikacji: EN

Abstrakty

EN

The superplastic forming and diffusion bonding (SPF/DB) process was investigated for the manufacture of the TC31 titanium alloy X-type lattice structure. The finite element (FE) model was used to simulate the SPF process and compression behavior of the X-type lattice structure, and the deformation and compression failure modes were analyzed. A theoretical model was revised to predict the structural compressive strength. The results showed that the material processed by heat treatment still had great plasticity with the maximum elongation of 142.5% at 920 °C. The bonding rate, thinning rate and shear strength of the TC31 alloy joint bonded at 920 °C/3 MPa/60 min were 97.1%, 5.56% and 364 MPa, respectively, which indicated it was suitable for the X-type lattice truss structure to formed in the process parameter. Based on the result of the fundamental test and FE simulation, the X-type lattice structure could be fabricated by DB at 920 °C/3 MPa/60 min and SPF at 920 °C with a target strain rate of 0.001 s^-1. Thickness measurements indicated that the area with a maximum thinning rate of 32.9% was located at the transition filet between the bonding areas and the ribs. The surface compressive strength of the X-type lattice structure was 1.51 MPa with a relative density of 0.015 when rib width was 5 mm, and the rib plastic buckling was considered as the failure mode of the TC31 titanium alloy lattice structure formed by SPF/DB. The surface compressive strength of the simulation results is 1.59 MPa with an error of 5.3%. The decrease of material properties and rib local thinning affect the accuracy of the theoretical predictions, and the revised theoretical result is 1.52 MPa with an error of 0.7%.

Słowa kluczowe

EN

TC31 titanium alloy; metal sandwich structure; SPF/DB; X-type lattice structure; mechanical property

PL

stop tytanu TC31; struktura warstwowa; SPF/DB; struktura kratowa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e137, 2023
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wykr.

Twórcy

autor

Wu Dipeng

• State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

autor

Chen Minghe

• State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

autor

Fan Ronglei

• State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

autor

Xiao Wenchao

• Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen 518000, China

autor

Wu Yong

• State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).