Effects of β treatments on microstructures and mechanical properties of TC4-DT titanium alloy

Xiao, Peng; Guo, Hao; Wang, Tao; Zhang, Yao

doi:10.1016/j.msea.2011.11.033

Cited by 66 publications

(25 citation statements)

References 17 publications

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“…Due to the limited number of movable slip systems in hexagonal titanium alloys, titanium alloys exhibit strong grain boundary strengthening, i.e. Liu et al found that the strength of the alloy was related to the thickness of the alpha laths, which conforms to Hall-Petch relationship [13,25]. The thickness of the α grain boundary directly influences the strength mismatch between the α+β matrix and the grain boundary.…”

Section: Discussionmentioning

confidence: 99%

Influence of cold rolling deformation on mechanical properties and corrosion behavior of Ti-6Al-3Nb-2Zr-1Mo alloy

Guo

Wang

Meng

et al. 2020

Mater. Res. Express

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The effects of cold deformation on tensile properties and corrosion behavior of the Ti-6Al-3Nb-2Zr-1Mo alloy are investigated in the present work. The microstructure of the sample was characterized by means of x-ray diffractometry, scanning electron microscope and electron backscattered diffraction. The corrosion behavior of the alloy in HCl solution was characterized by potentiodynamic polarization test. The results show that the α laths became kinked after cold rolling and the interlamellar spacing decreased to about 0.45 μm at the rolling reduction of 50%. The kinking process closely linked with the development of shear bands within the colonies. EBSD investigations indicated that the α lath exhibited a (0001) texture in the 50% cold-rolled alloy. With the increase of cold deformation strain, the Yield strength of the alloy increases from 811 MPa to 943 MPa. The corrosion resistance of processed samples was higher than as-received sample. Experimental results showed that deformation substructure and texture had an influence on the corrosion rate of this alloy.

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Section: Discussionmentioning

confidence: 99%

Influence of cold rolling deformation on mechanical properties and corrosion behavior of Ti-6Al-3Nb-2Zr-1Mo alloy

Guo

Wang

Meng

et al. 2020

Mater. Res. Express

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“…The effect of strain and strain rate is related to the initial microstructure. Peng et al [13] studied the relationship between mechanical properties and microstructures of TC4-DT alloy which obtained from β processing and β treatment. The microstructures present a great influence on the fracture toughness, tensile strength, and plasticity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

Yan

Zhang

et al. 2019

Metals

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In this study, the effect of initial annealing microstructure of Ti–4Al–2V (TA17) alloy on forming characteristic was studied, so as to provide a basis for quality control of plastic forming of titanium alloy parts. The titanium alloy always undergoes annealing treatment before forming, due to different microstructures present different mechanical properties. The TA17 with different microstructures are obtained by means of various annealing treatment temperatures. The tensile behavior of TA17 is investigated at room temperature and 900 °C under constant strain rate of 0.01 s−1. The experimental results show that the mechanical properties of TA17 are sensitive to the initial microstructure before deformation. The microstructure of TA17 at 850 °C (2 h) is the equiaxed primary α-phase after the annealing process. It exhibits good plasticity at room temperature. This phenomenon is also confirmed from fracture morphology from the scanning electron microscope (SEM) analysis. At 900 °C, which is a high tensile temperature, the alloy with equiaxed primary α-phase performs outstanding plasticity compared with other microstructures. This work establishes a good understanding on the relationship between the mechanical properties and microstructures of TA17 at a wide temperature range.

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“…In earlier reports [25][26][27], the capability of the material to strain hardening was also connected with the difference between the UTS and YS which permits controlling and predicting the material fracture toughness. Such dependences have been obtained for different materials (Mg-6Zn-Mn alloy, Al-Li alloys, light-nitrogen steel, etc) [25][26][27]. For the Ti alloy TC21 with an equiaxed microstructure, a similar correlation was obtained when an increase of the difference between the UTS and the YS led to an enhancement of the fracture toughness К IC [27].…”

Section: Discussionmentioning

confidence: 99%

Fracture toughness at cryogenic temperatures of ultrafine-grained Ti-6Al-4V alloy processed by ECAP

Semenova

Modina

Polyakov

et al. 2018

Materials Science and Engineering: A

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This research is focused on a study of the relationship between mechanical behavior, microstructure and fracture toughness of a Ti-6Al-4V alloy in both coarse-grained (CG) and ultrafine-grained (UFG) conditions. The UFG state with a primary alpha-phase grain size, but with different orientations with respect to the testing direction, was produced by equal-channel angular pressing (ECAP) after thermo-mechanical treatment. Fracture toughness and mechanical testing were conducted at a temperature of 196 °C. A duplex UFG structure formation in the Ti-6Al-4V alloy led to an enhancement of yield stress and a decrease in the fracture toughness at 196 С by comparison with the CG alloy. The lowest values of fracture toughness were observed in a sample in which there were elongated grains lying parallel to the loading direction during testing compared to the situation where the grains were perpendicular to this direction. The reasons for the reduction in fracture toughness in the UFG Ti alloy are discussed.

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Effects of β treatments on microstructures and mechanical properties of TC4-DT titanium alloy

Cited by 66 publications

References 17 publications

Influence of cold rolling deformation on mechanical properties and corrosion behavior of Ti-6Al-3Nb-2Zr-1Mo alloy

Influence of cold rolling deformation on mechanical properties and corrosion behavior of Ti-6Al-3Nb-2Zr-1Mo alloy

The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy

Fracture toughness at cryogenic temperatures of ultrafine-grained Ti-6Al-4V alloy processed by ECAP

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