2019
DOI: 10.1016/j.jallcom.2018.10.196
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Microstructure evolution and mechanical behaviour of severely deformed pure titanium through multi directional forging

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Cited by 70 publications
(38 citation statements)
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“…Severe plastic deformation (SPD) methods have proved their capability and potential as a suitable technique for production of bulk ultrafine grain (UFG), and even, nanostructure (NS) metals and alloys [1][2][3][4][5]. Some of the prominent SPD methods which have been well developed include equal channel angular pressing (ECAP) [6,7], equal channel forward extrusion [8], high-pressure torsion (HPT) [9], planar twist extrusion (PTE) [10], constrained groove pressing (CGP) [11], accumulative roll bonding (ARB) [12], cryorolling [13], multi-directional forging (MDF) [14], etc. It is generally accepted that materials with refined grain structure can be prepared by imposing shear stress through SPD methods, during which the density of dislocations significantly increases.…”
Section: Introductionmentioning
confidence: 99%
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“…Severe plastic deformation (SPD) methods have proved their capability and potential as a suitable technique for production of bulk ultrafine grain (UFG), and even, nanostructure (NS) metals and alloys [1][2][3][4][5]. Some of the prominent SPD methods which have been well developed include equal channel angular pressing (ECAP) [6,7], equal channel forward extrusion [8], high-pressure torsion (HPT) [9], planar twist extrusion (PTE) [10], constrained groove pressing (CGP) [11], accumulative roll bonding (ARB) [12], cryorolling [13], multi-directional forging (MDF) [14], etc. It is generally accepted that materials with refined grain structure can be prepared by imposing shear stress through SPD methods, during which the density of dislocations significantly increases.…”
Section: Introductionmentioning
confidence: 99%
“…In general, there are scattered results about the wear resistance of UFG pure titanium. Also, despite the simplicity, low cost and more potential for industrial application of MDF process in comparison with those of many SPD methods [14], the effect of this process on the wear properties of CP titanium has not been studied. For this aim, grade 2 CP titanium was processed through MDF process up to six passes at both room and 220 °C temperatures.…”
Section: Introductionmentioning
confidence: 99%
“…It is needed to mention that increasing the pores and porosity of sample during the MDF process, particularly in the 20% Mg 2 Si composite leads to reduce the effect of strengthening mechanisms in the achieved composites. Hence, despite the suitable strength improvement of the samples within the utilization of the MDF, it is found that the influence of MDF process on the strength improvement of Al-20%Mg 2 Si composite is lower than its effect on the enhancement of metals and alloys strengthening without any brittle phases [12].…”
Section: Mechanical Propertiesmentioning
confidence: 93%
“…Also, the rate of hydraulic pressure was equal to 2 mm/s for all samples. According to the sample dimension, the equivalent plastic strain of 0.47 was imposed within each pass of the process [12]. MDF process was carried out using die and punches manufactured from H13 tool steel with hardness of about 52 HRC.…”
Section: Methodsmentioning
confidence: 99%
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