Effect of Microalloying Elements on the Physicochemical Properties of Commercial-Purity Titanium Subjected to Severe Plastic Deformation

2021 ◽  
Vol 2021 (4) ◽  
pp. 410-417
Author(s):  
N. A. Shurygina ◽  
A. O. Cheretaeva ◽  
A. M. Glezer ◽  
A. D. Medvedeva ◽  
D. L. D’yakonov ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Physicochemical Properties ◽  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Microalloying Elements ◽  
Purity Titanium

Effect of the Fractionality and Direction of Severe Plastic Deformation on the Structure and Properties of Commercial-Purity Titanium

2019 ◽  
Vol 2019 (10) ◽  
pp. 1051-1056
Author(s):  
N. A. Shurygina ◽  
A. M. Glezer ◽  
D. L. D’yakonov ◽  
A. D. Medvedeva ◽  
A. A. Tomchuk ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Structure And Properties ◽  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Purity Titanium

Ultrasonic Impact Treatment of Fine- and Coarse Grained Commercial Purity Titanium

2016 ◽  
Vol 1139 ◽  
pp. 12-15
Author(s):  
Rustam Hairullin ◽  
Anna Kozelskaya ◽  
Marina Kazachenok
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Surface Layer ◽  
Electron Backscatter Diffraction ◽  
Coarse Grained ◽  
Commercial Purity ◽  
Ultrasonic Impact Treatment ◽  
Commercial Purity Titanium ◽  
Wide Range ◽  
Purity Titanium

The grain size effect on surface morphology, microstructure and mechanical properties of commercial purity titanium specimens subjected to ultrasonic impact treatment was studied. It was found by atomic force microscope that ultrasonic impact treatment of titanium specimens resulted in surface corrugation happens due to their severe plastic deformation. The profile height of the corrugated surface depends on the grain size of specimens and varies in a wide range. The thicknesses of a modified surface layer of fine-and coarse grained titanium specimens were studied. Electron backscatter diffraction (EBSD) analysis revealed that the plastic deformation was accompanied by twin and low angle boundary formation in the surface layer of titanium specimens. The effect of ultrasonic impact treatment on the microhardness of the surface layer of the specimens under study was investigated.

Grain Refinement in Commercial Purity Titanium Sheets by Constrained Groove Pressing

2011 ◽  
Vol 683 ◽  
pp. 233-242 ◽  
Author(s):  
G.V. Preetham Kumar ◽  
Ganesh G. Niranjan ◽  
Chakkingal Uday
Keyword(s):  
Plastic Deformation ◽  
Grain Refinement ◽  
Commercial Purity ◽  
Shear Deformations ◽  
Annealed Condition ◽  
Working Temperature ◽  
Warm Working ◽  
Commercial Purity Titanium ◽  
Significant Interest ◽  
Purity Titanium

Grain refinement studies in titanium have gained significant interest owing to its importance as a biomaterial. Severe plastic deformation techniques have been widely applied for grain refinement in metals and are capable of producing ultra fine and nano sized microstructures. In this study, repetitive shear deformations by constrained groove pressing have been applied to commercial purity titanium sheets of 2 mm thickness at a warm working temperature of 300oC. Microstructure studies reveal the formation of elongated grains with widths of the order of 0.5μm from an initial grain size of 40μm in the annealed condition. An increase in strength is also observed.

scholarly journals Shock-Wave Properties and Deformation-Induced Structure of Commercial-Purity Titanium

2021 ◽  
Vol 122 (8) ◽  
pp. 794-799
Author(s):  
A. V. Pavlenko ◽  
A. V. Dobromyslov ◽  
N. I. Taluts ◽  
S. N. Malyugina ◽  
S. S. Mokrushin
Keyword(s):  
Plastic Deformation ◽  
Spall Strength ◽  
High Rate ◽  
Loading Conditions ◽  
Commercial Purity ◽  
Compressive Wave ◽  
Commercial Purity Titanium ◽  
Induced Structure ◽  
Wave Properties ◽  
Purity Titanium

Abstract The shock compressive wave profiles of commercial-purity titanium samples under different loading conditions have been measured. The spall strength of titanium as a function of the strain rate and temperature of deformation has been found. High-rate plastic deformation mechanisms have been studied. High-rate plastic deformation under the investigated loading conditions has been shown to occur by slip and twinning. The α → ω transformation has been established to begin at 12.2 GPa.

scholarly journals Microstructure of Commercial Purity Titanium Subjected to Complex Loading by the Kobo Method

2016 ◽  
Vol 61 (1) ◽  
pp. 31-36 ◽  
Author(s):  
J. Kawałko ◽  
M. Bieda ◽  
K. Sztwiertnia
Keyword(s):  
Plastic Deformation ◽  
Complex Loading ◽  
Single Step ◽  
Extrusion Ratio ◽  
Commercial Purity ◽  
Orientation Microscopy ◽  
Commercial Purity Titanium ◽  
Titanium Grade ◽  
Purity Titanium ◽  
Grain Diameter

Observations of refined microstructure of Commercial Purity titanium for applications in biomedical devices has been carried out. Refinement of titanium microstructure has been performed in process with complex strain scheme. Materials investigated in this work were: Commercial Purity titanium grade 2 and grade 4. Samples of as received materials were subjected to plastic deformation in complex loading process of extrusion combined with oscillation twisting (KoBo extrusion). Both types of samples were deformed in single step of extrusion, in temperature of 450 °C, with extrusion ratio 19.14 and 12.25 for grade 2 titanium and grade 4 titanium, respectively. Initial mean grain diameter for both types of materials was approximately 30 μm. Samples were investigated by means of crystal orientation microscopy. In both cases considerable microstructure refinement has been observed. Microstructures of deformed samples are heterogenous and consist of both elongated and fine equiaxed grains. Elongated grains (lamellae) are separated by High Angle Grain Boundaries and feature internal structure with subgrains and dislocation walls. Grain refinement is stronger in material with higher extrusion ratio and mean grain diameter in this case is equal to 1.48 μm compared to 8.07 μm. in material with lower extrusion ratio. Mean misorientation angle (24° and 27° for grade 4 and grade 2 titanium) indicates high fraction of HAGBs in microstructures of KoBo deformed samples. Misorientation fluctuations inside grains have been analyzed and distinct curvature of crystal lattice have been observed. Hardness of samples after plastic deformation increased from 174.6±3.4 and 234.9±3.5 to 205.0±3.2 and 251.2±2.2 for titanium grade 2 and grade 4 respectively.

ATHERMAL PLASTIC DEFORMATION IN COMMERCIAL PURITY TITANIUM

1970 ◽  
pp. 503-516 ◽  
Author(s):  
S.N. MONTEIRO ◽  
A.T. SANTHANAM ◽  
R.E. REED-HILL
Keyword(s):  
Plastic Deformation ◽  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Purity Titanium

Hydrogen embrittlement of commercial purity titanium

2002 ◽  
Vol 44 (8) ◽  
pp. 1875-1888 ◽  
Author(s):  
C.L Briant ◽  
Z.F Wang ◽  
N Chollocoop
Keyword(s):  
Hydrogen Embrittlement ◽  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Purity Titanium

scholarly journals Commercial Purity Titanium Processed by Rotary-Die Equal Channel Angular Pressing Method

2005 ◽  
Vol 46 (9) ◽  
pp. 2098-2101 ◽  
Author(s):  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Aibin Ma ◽  
Kazutaka Suzuki ◽  
Tsunemichi Imai ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Commercial Purity ◽  
Pressing Method ◽  
Angular Pressing ◽  
Commercial Purity Titanium ◽  
Purity Titanium

The microstructure-strength relationship in severely-deformed commercial-purity titanium

2017 ◽  
Vol 192 ◽  
pp. 165-168 ◽  
Author(s):  
G.S. Dyakonov ◽  
S. Mironov ◽  
I.P. Semenova ◽  
R.Z. Valiev ◽  
S.L. Semiatin
Keyword(s):  
Commercial Purity ◽  
Commercial Purity Titanium ◽  
Strength Relationship ◽  
Purity Titanium
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