Dual phase titanium alloy hot forging process design: experiments and numerical modeling

Ducato, Antonino; Buffa, Gianluca; Fratini, Livan; Shivpuri, Rajiv

doi:10.1007/s40436-015-0127-0

Cited by 13 publications

(5 citation statements)

References 91 publications

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“…However, if a defective microstructure occurs during the forging process, it is difficult to modify it by subsequent heat treatment. Furthermore, titanium alloys are extremely sensitive to the forging process, during which the temperature history determines the solid phase transformation and influences the shape, size, proportion, and distribution of phases [ 9 ]. Due to the difficulties in filling dies with the alloy to get the designed geometry, titanium alloys are classified as difficult-to-forge materials.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Campanella

Buffa

Hassanin

et al. 2022

Int J Adv Manuf Technol

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Since a few decades, the aircraft industry has shifted its preference for metal parts to titanium and its alloys, such as the high-strength titanium grade 5 alloy. Because of titanium grade 5 limited formability at ambient temperature, forming operations on this material requires high temperatures. In these conditions, a peculiar microstructure evolves as a result of the heating and deformation cycles, which has a significant impact on formability and product quality. On the other hand, additive manufacturing technologies, such as selective laser melting and electron beam melting, are increasingly being used and are replacing more traditional approaches such as machining and forging. Fundamental part characteristics such as mechanical and microstructural properties, geometric accuracy, and surface quality strongly depend on the selection of the manufacturing method. The authors of this paper seek to identify the strengths and limitations imposed by the intrinsic characteristics of different manufacturing alternatives for the production of parts of aeronautical significance, providing guidelines for the choice of the most appropriate manufacturing route for a given application and part design.

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Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Campanella

Buffa

Hassanin

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…However, if a defective microstructure occurs during the forging process, it is difficult to modify it by subsequent heat treatment. Furthermore, titanium alloys are extremely sensitive to the forging process, during which the temperature history determines the solid phase transformation, and influences the shape, size, proportion, and distribution of phases [9]. Due to the difficulties in filling dies with the alloy to get the designed geometry, titanium alloys are classified as a difficult-to-forge materials.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Campanella¹,

Buffa²,

Hassanin³

et al. 2022

Preprint

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In recent years, the aircraft industry has shifted its preference for metal parts to titanium and its alloys, such as the high-strength Titanium Grade5 alloy. Because of Titanium Grade 5 limited formability at ambient temperature, forming operations on this material require high temperatures. In these conditions, a peculiar microstructure evolves as a result of the heating and deformation cycles, which has a significant impact on formability and product quality. On the other hand, additive manufacturing technologies, as selective laser melting and electron beam melting, are increasingly being used and are replacing more traditional approaches such as machining and forging. Fundamental parts characteristics as mechanical and microstructural properties, geometric accuracy and surface quality strongly depend on the selection of the manufacturing method. The authors of this paper seek to identify the strengths and limitations imposed by the intrinsic characteristics of different manufacturing alternatives for the production of parts of aeronautical significance, providing guidelines for the choice of the most appropriate manufacturing route for given application and part design.

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“…Luo et al [14] reported the phase transition characteristics of a Ti-6Al-4V drum during hot forging and subsequent cooling operations. Furthermore, based on 3D FE approaches, Ducato et al [15] reflected the phase transition behaviors in a Ti-6Al-4V flange hot forging procedure. Buffa et al [16] studied Ti-6Al-4V phase distributions during a welding process and verified the simulated results by experiments.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Friction Conditions on Temperature and Phases Within Forged Ti-6Al-4V Aeroengine Drum

Luo

Jiang

Zhang

et al. 2021

Preprint

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Friction conditions significantly impact the temperature and phases of titanium forged parts, further directly affecting the microstructures and mechanical properties of final parts. In this paper, a 2D simplified FE model combined with phase transition equations is developed to simulate Ti-6Al-4V drum forging procedure. Then, friction effects on the temperature and phases of the forged drum are numerically analyzed and verified by experiments. Results indicate that unlike little influence on α+β phase, improving friction obviously decreases the general levels of temperature and β phase and increases the homogeneities of α and β phases within the forged drum, which are associated with cooling rates and the heating effects of friction and deformation.

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Dual phase titanium alloy hot forging process design: experiments and numerical modeling

Cited by 13 publications

References 91 publications

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Mechanical and microstructural characterization of titanium gr.5 parts produced by different manufacturing routes

Numerical Analysis of Friction Conditions on Temperature and Phases Within Forged Ti-6Al-4V Aeroengine Drum

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