The influence of tube strains on tube deformation ratios and textural evolution during the deformation of pure Nb tubes subjected to hydrostatic extrusion was investigated. The tube deformation ratios increased with increasing tube strains. A very strong <111> fibre texture at a lower strain transformed to a dual strong <100> and weak <111> fibre texture at a higher strain. The texture evolution led to an increase in the Taylor factor at the drawing tensor.
LiYZ.Thermal properties of NbTi superconductor wire and its heat release performance over quench. Mater Sci Eng A. 2000; 292:194–197. doi: 10.1016/S0921-5093(00)01002-9
2.
EcharriASpsdoniM.Superconducting Nb3Sn: a review. Cryogenics (Guildf). 1971; 11:274–284. doi: 10.1016/0011-2275(71)90183-4
3.
WillensRHGeballeTHGossardACSuperconductivity of Nb3Al. Solid State Commun. 1969; 7:837–841. doi: 10.1016/0038-1098(69)90773-X
4.
JieHQiuWBillahMSuperior transport JC obtained in in-situ MgB2 wires by tailoring the starting materials and using a combined cold high pressure densification and hotisostatic pressure treatment. Scr Mater. 2017; 129:79–83. doi: 10.1016/j.scriptamat.2016.09.042
5.
LeeJJeongH.Effect of rolling speed on microstructural and microtextural evolution of Nb tubes during caliber-rolling process. Metals (Basel). 2019; 9:500. doi: 10.3390/met9050500
6.
ChernovVMKardashevBKMorozKA.Low-temperature embrittlement and fracture of metals with different crystal lattices-dislocation mechanisms. Nucl Mater Energy. 2016; 9:496–501. doi: 10.1016/j.nme.2016.02.002
7.
KarabogaFUlgenATYetisHMechanical properties and uniformity of Fe-MgB2 wires upon various wire drawing steps. Mater Sci Eng A. 2018; 721:89–95. doi: 10.1016/j.msea.2018.02.073
8.
MitchellTE.Slip in body-centered cubic crystals. Phil Mag. 1968; 17:1169–1194. doi: 10.1080/14786436808223194
9.
PriestnerRLeslieWC.Nucleation of deformation twins at slip plane. Phil Mag. 1965; 11:895–916. doi: 10.1080/14786436508223953
10.
HungJCHungC.The design and development of a hydrostatic extrusion apparatus. J Mater Process Technol. 2000; 104:226–235. doi: 10.1016/S0924-0136(00)00593-8
11.
LeeJKimYJeongH.Fabrication of Micro-sized Al/Cu clad by repeated hydrostatic extrusion and its mechanical properties. Mater Manuf Process. 2014; 29:683–686. doi: 10.1080/10426914.2014.912303
12.
TowareckADobkowskaAZdunekJThe influence of Mg addition and hydrostatic extrusion HE on the repassivation ability of pure Al, AlMg1 and AlMg3 model alloys in 3.5 wt-% NaCl. Corros Eng Sci Techn. 2019; 54:666–672. doi: 10.1080/1478422X.2019.1655285
13.
MajdaTMoszczynskaDZdunekJInfluence of hydrostatic extrusion process on the microstructure and texture of polycrystalline nickel. Mater Sci Technol. 2017; 33:2046–2052. doi: 10.1080/02670836.2017.1343263
14.
LeeJJeongHParkS.Effect of extrusion rations on microstructural evolution, textural evolution, and grain boundary character distributions of pure copper during hydrostatic extrusion. Mater Character. 2019; 158:109941. doi: 10.1016/j.matchar.2019.109941
15.
YvellKGrehkTMEngbergG.Microstructure characterization of 316L deformed at high strain rates using EBSD. Mater Character. 2016; 122:14–21. doi: 10.1016/j.matchar.2016.10.017
16.
GummertH-J.Ziehen: Über die herstellung von Drähten, Stangen und Rohren. Oldenburg: F&S Druck GmbH; 2005.
17.
DuesberyMS.On kinked screw dislocations in the b.c.c. lattice- I. The structure and peierls stress of isolated kinks. Acta Metall. 1983; 31:1747–1758. doi: 10.1016/0001-6160(83)90173-6
18.
ItoKVitekV.Atomistic study of non-schmid effects in the plastic yielding of bcc metals. Philos Mag A. 2001; 81:1387–1407. doi: 10.1080/01418610108214447
19.
RosenbergJMPiehlerHR.Calculation of the Taylor factor and lattice rotations for BCC metals deforming by pencil glide. Metall Trans. 1971; 2:257–259. doi: 10.1007/BF02662666
20.
LeeYJSubhashGRavichandranG.Constitutive modeling of textured body-centered-cubic (bcc) polycrystals. Int J Plasticity. 1999; 15:625–645. doi: 10.1016/S0749-6419(99)00004-2
21.
HirthJPLotheJ.Theory of dislocations: second ed. New York ( NY): Willey; 1982.
22.
ChinGYMammelWLDolanMT.Taylors theory of texture for axisymmetric flow in body-centered cubic metals. Trans Metall Soc AIME. 1967; 239:1854–1855.
23.
HullDBaconD. J.Introduction to dislocations. Pergamon: Oxford; 1984.
