Relationship between Thickness of Lamellar α+β Phase and Mechanical Properties of Titanium Alloy

Sui, Yan Wei; Liu, Ai Hui; Li, Bang Sheng; Guo, Jing

doi:10.4028/www.scientific.net/amr.311-313.1916

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…This hardening is thus linked to the plasticity of the α phase (α I nodules and α II lamellae) as the evolution of the lamellar thickness can be related to the yield stress [31,34,35] or to the hardness or the ductility of the material [27,35]. The average size considered next is thus 15µm.…”

Section: Materials and Devicementioning

confidence: 99%

Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process

Julien

Velay

Vidal

et al. 2018

International Journal of Mechanical Sciences

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The present investigation proposes an experimental device able to assess the thermomechanical behavior of Ti-6Al-4V Titanium alloy throughout the die-forging operation. Constitutive equations are developed to assess the influence of the process (die-forging temperature, cooling rate) and the microstructure parameters on the mechanical response of the alloy. For this purpose, a non-unified behavior model formulation is implemented, which defines two main mechanisms related to α and β phases and allows the prediction of hardening, strain rate sensitivity and temperature, combined with the phase evolution that is dependent on the cooling conditions and which can greatly affect the mechanical behavior. This identification strategy is then applied for die-forging temperatures below the β-transus temperature, which requires microstructural information provided by SEM (Scanning Electron Microscopy) observations and image analysis. Finally, the approach is extended to die-forging temperatures above the β-transus temperature.

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Section: Materials and Devicementioning

confidence: 99%

Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process

Julien

Velay

Vidal

et al. 2018

International Journal of Mechanical Sciences

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Heterogeneous deformation behavior of hybrid manufactured high strength titanium alloy: Coordinate deformation and stress concentration

Shen

Wang

2022

Materials Science and Engineering: A

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Microstructures and Mechanical Properties of a New Type of High Temperature Titanium Alloy

Cui

Chen

Zhao

et al. 2020

MSF

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The microstructures and mechanical properties of a new type near α high temperature titanium alloy Ti-6.5Al-2.5Sn-9Zr-0.5Mo-0.25Si-1Nb-1W-0.3Re (wt. %) (denoted as TA6.5) were investigated. It was observed that the microstructure of forged TA6.5 mainly consisted of deformed lamellar α phase, small amount of equiaxed α phase, and residual β phase, exhibiting high strength and comparatively low elongation. Three different heat treatments processes were performed on forged TA6.5. The results showed that all heat treated alloys displayed high tensile strengths, and the values of strength parameters were almost unchanged with the increasing solution temperature, ascribing to the combination effects of decreasing primary α phase and increasing contents and widths of secondary α phase and lamellas. The tensile elongations of heat treated alloys tested at 650 °C decreased slightly with the increasing solution temperature, which is due to the increased width of secondary α lamellas and the generation of coarse grain boundary α phase. TA6.5 treated in the process of 990 °C/1 h/AC+700 °C/4 h/AC exhibited excellent comprehensive mechanical properties, i.e. the ultimate tensile strength of 829 MPa, yield strength of 707 MPa and elongation of 18.73% respectively.

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Relationship between Thickness of Lamellar α+β Phase and Mechanical Properties of Titanium Alloy

Cited by 3 publications

References 3 publications

Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process

Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching process

Heterogeneous deformation behavior of hybrid manufactured high strength titanium alloy: Coordinate deformation and stress concentration

Microstructures and Mechanical Properties of a New Type of High Temperature Titanium Alloy

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