Grain-structure development in heavily cold-rolled alpha-titanium

D’yakonov, G. S.; Mironov, S.; Zherebtsov, Sergey; Malysheva, S. P.; Салищев, Г. А.; Salem, Ayman A.; Semiatin, S. L.

doi:10.1016/j.msea.2014.03.141

Cited by 39 publications

(18 citation statements)

References 23 publications

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“…EBSD (inverse-pole-figure) maps in Figure 1 reveal that twinning took place at T ¼ 200 C, though the number of twins is less than that in the structure processed at room temperature. [57] At the same time, the twinning process evolved at low (ε 2 $ 1.4, 2 passes) strain degrees (Figure 1a) and then contributed to the increase in the density of high-angle boundaries (HAB) with effective strain growth (Figure 2a). Reproduced with permission.…”

Section: Formation Of Ufg Structure In Grade 4 Ti Alloy and Mechanisms Of Its Hardeningmentioning

confidence: 99%

Ultrafine‐Grained Titanium‐Based Alloys: Structure and Service Properties for Engineering Applications

et al. 2019

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Herein, an overview of the recent research on the relationship between the ultrafine‐grained (UFG) structure of titanium and its alloys and the physical and mechanical properties of the materials, as well as the formation of advanced functional and service properties, including fatigue strength, creep behavior, and impact and fracture toughness is presented. It is shown that due to the record properties achieved in UFG titanium and its alloys, these materials have an innovative potential for successful application in medicine and engineering industries. Some of these works are carried out in cooperation with the team of Prof. Terence G. Langdon. Professor Langdon made a significant contribution to the development of modern materials science in the field of nanostructured metallic materials.

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Section: Formation Of Ufg Structure In Grade 4 Ti Alloy and Mechanisms Of Its Hardeningmentioning

confidence: 99%

Ultrafine‐Grained Titanium‐Based Alloys: Structure and Service Properties for Engineering Applications

et al. 2019

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“…Wang stated that cold rolling process improves the tensile strength and reduce the elastic modulus of the TiNbTaZr titanium alloy through grain refinement [6]. Dyakonov studied the mircostructure evolution of the pure titanium subjected to cold rolled treatment [7]. The grains were significantly refined by the treatment, and the split-basal texture strength was increased due to the activation of 〈c+a〉 slip.…”

Section: Introductionmentioning

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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“…Such results allow slip systems activated in both the specimens to be primarily determined. [27,28]. This suggests that the low angle peak in Fig.…”

Section: Ebsd Analysesmentioning

confidence: 89%

EBSD Study of Microstructural and Textural Changes of Hot-Rolled Ti–6Al–4V Sheet After Annealing at 800 °C

Xia

Chai

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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In this paper, electron backscatter diffraction and various other characterization and analysis techniques including X-ray diffraction, electron channeling contrast imaging and energy-dispersive spectrometry were jointly employed to investigate microstructural and textural changes of a hot-rolled Ti-6Al-4V (TC4) sheet after annealing at 800°C for 5 h. In addition, the hardness variation induced by the annealing treatment is rationalized based on revealed microstructural and textural characteristics. Results show that the TC4 sheet presents a typical dual-phase (a ? b) microstructure, with a-Ti as the major phase and short-rod-shaped b-Ti (minority) uniformly distributed throughout the a matrix. Most of a grains correspond to the un-recrystallized structures with a typical rolling texture (c//TD and \11-20[//ND) and dense low angle boundaries (LABs). After the annealing, the stored energy in the as-received specimen is significantly reduced, along with greatly decreased LABs density. Also, the annealing allows recrystallization and grain growth to occur, leading to weakening of the initial texture. Furthermore, the water quenching immediately after the annealing triggers martensitic transformation, which makes the high-temperature b phases be transformed into submicron a plates. The hardness of the annealed specimen is 320.5 HV, lower than that (367.0 HV) of the as-received specimen, which could be attributed to reduced LABs, grain growth and weakened texture. Nevertheless, the hardening effect from the fine martensitic plates could help to suppress a drastic hardness drop.

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Grain-structure development in heavily cold-rolled alpha-titanium

Cited by 39 publications

References 23 publications

Ultrafine‐Grained Titanium‐Based Alloys: Structure and Service Properties for Engineering Applications

Ultrafine‐Grained Titanium‐Based Alloys: Structure and Service Properties for Engineering Applications

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

EBSD Study of Microstructural and Textural Changes of Hot-Rolled Ti–6Al–4V Sheet After Annealing at 800 °C

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