Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

Moreno-Valle, E.C.; Pachla, W.; Kulczyk, Mariusz; Sabirov, I.; Hohenwarter, Anton

doi:10.2320/matertrans.mf201928

Cited by 11 publications

(4 citation statements)

References 43 publications

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“…In contrast to the LPBF samples, the differently oriented wrought samples all came from the same highly textured plate with the same chemical composition, suggesting that crystallographic texture was responsible for the anisotropy in the tensile properties. As should be expected, the longitudinal oriented samples (LD) exhibited strong basal/transverse texture (Figure 8a) and lower σYS values compared to the transverse oriented samples (TD) that exhibited strong transverse texture (Figure 8b) [1,65,78]. For the latter case, the c-axis of the α grains are mostly angled at ~90° to loading direction.…”

Section: Microstructure and Build Orientation Effects On Strengthsupporting

confidence: 51%

Tensile and fatigue crack growth behavior of commercially pure titanium produced by laser powder bed fusion additive manufacturing

Hasib

Ostergaard

Liu

et al. 2021

Additive Manufacturing

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Section: Microstructure and Build Orientation Effects On Strengthsupporting

confidence: 51%

Tensile and fatigue crack growth behavior of commercially pure titanium produced by laser powder bed fusion additive manufacturing

Hasib

Ostergaard

Liu

et al. 2021

Additive Manufacturing

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“…Obviously, upon plastic deformation, the initial texture was markedly altered as the formation of preferred orientations took place. Hydrostatically extruded titanium exhibits strong fiber texture, typical for extruded, drawn and swaged metals [23]. Interestingly, the fiber component had already formed during the first stage of HE and the consecutive extrusion operations strengthened it as the material deformed at the strain of 3.23 demonstrated axial texture.…”

Section: Crystallographic Texture Determinationmentioning

confidence: 99%

Microstructure evolution of pure titanium during hydrostatic extrusion

Wojtas

Maj

Wierzbanowski

et al. 2022

Archiv.Civ.Mech.Eng

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Regarding severely deformed materials of potentially high applicability in various industry branches, their microstructure evolution during processing is of vast significance as it enables to control or adjust the most essential properties, including mechanical strength or corrosion resistance. Within the present study, the microstructure development of commercially pure titanium (grade 2) in the multi-stage process of hydrostatic extrusion has been studied with the use of the well-established techniques, involving electron backscatter diffraction as well as transmission electron microscopy. Microstructural deformation-induced defects, including grain boundaries, dislocations, and twins, have been meticulously analyzed. In addition, a special emphasis has been placed on grain size, grain boundary character as well as misorientation gradients inside deformed grains. The main aim was to highlight the microstructural alterations triggered by hydroextrusion and single out their possible sources. The crystallographic texture was also studied. It has been concluded that hydrostatically extruded titanium is an exceptionally inhomogeneous material in terms of its microstructure as evidenced by discrepancies in grain size and shape, a great deal of dislocation-type features observed at every single stage of processing and the magnitude of deformation energy stored. Twinning, accompanied by grain subdivision phenomenon, was governing the microstructural development at low strains; whereas, the process of continuous dynamic recrystallization came to the fore at higher strains.Selected mechanical properties resulting from the studied material microstructure are also presented and discussed.

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“…The SPD field experienced significant progress in the past three decades, as discussed in several review papers [ 124 , 125 , 126 , 127 , 128 , 129 ], and more recently in a special issue in 2019 [ 130 ], which gathered overviews on both historical developments [ 131 ] and recent advancements [ 132 ]. A survey of these overviews indicates that despite significant progress on theoretical aspects [ 133 , 134 ], mechanisms [ 135 , 136 ], processing [ 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 ], microstructure [ 145 , 146 , 147 , 148 , 149 ], and mechanical properties [ 150 , 151 , 152 , 153 , 154 , 155 ] of metallic materials, there is a recent tendency to apply SPD to a wider range of materials (oxides [ 156 ], semiconductors [ 157 ], carbon polymorphs [ 158 ], glasses [ 159 ], and polymers [ 160 ]) to control phase transformations [ 161 ] and solid-state reaction [ 162 , 163 , 164 ] for achieving advanced functional properties [ 165 , 166 , 167 , 168 , 16...…”

Section: Discussion On Future Outlookmentioning

confidence: 99%

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

et al. 2023

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Excessive CO2 emission from fossil fuel usage has resulted in global warming and environmental crises. To solve this problem, the photocatalytic conversion of CO2 to CO or useful components is a new strategy that has received significant attention. The main challenge in this regard is exploring photocatalysts with high efficiency for CO2 photoreduction. Severe plastic deformation (SPD) through the high-pressure torsion (HPT) process has been effectively used in recent years to develop novel active catalysts for CO2 conversion. These active photocatalysts have been designed based on four main strategies: (i) oxygen vacancy and strain engineering, (ii) stabilization of high-pressure phases, (iii) synthesis of defective high-entropy oxides, and (iv) synthesis of low-bandgap high-entropy oxynitrides. These strategies can enhance the photocatalytic efficiency compared with conventional and benchmark photocatalysts by improving CO2 adsorption, increasing light absorbance, aligning the band structure, narrowing the bandgap, accelerating the charge carrier migration, suppressing the recombination rate of electrons and holes, and providing active sites for photocatalytic reactions. This article reviews recent progress in the application of SPD to develop functional ceramics for photocatalytic CO2 conversion.

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Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

Cited by 11 publications

References 43 publications

Tensile and fatigue crack growth behavior of commercially pure titanium produced by laser powder bed fusion additive manufacturing

Tensile and fatigue crack growth behavior of commercially pure titanium produced by laser powder bed fusion additive manufacturing

Microstructure evolution of pure titanium during hydrostatic extrusion

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

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