Cost Effective and Eco‐Friendly Process for Preparation of Wrought Pure Ti Material via Direct Consolidation of TiH₂Powders

Recent Advances in the Design and Fabrication of Strong and Ductile (Tensile) Titanium Metal Matrix Composites

“…In contrast, CP Ti/TiC has received good attention thanks to the utilization of various forms of nanostructured carbon precursors such as CNTs, [59][60][61][62][63][64][65][66][67][68][69][70][71] VGCFs, [72][73][74] graphene nanoplatelets (GNP)/nanoflakes, [75][76][77][78][79][80][81] carbon black (CB), [82][83][84] nanodiamonds, [62] resol nanospheres, [85] and graphite. [64] Figure 5 shows the tensile properties of the resultant composites.…”

“…[64] Figure 5 shows the tensile properties of the resultant composites. [60,61,63,64,72,73,76,77,84] A small amount of nanostructured carbon precursors dramatically increased the tensile strength while being able to retain good ductility (!10%). For example, an addition of 1 wt% VGCF to CP Ti produced UTS as high as 1180 MPa and elongation of 15%, [72,73] which is clearly superior to the tensile properties of many different forms of Ti-6Al-4V including mill-annealed and additively manufactured Ti-6Al-4V.…”

PM compaction equations applied for the modelling of titanium hydride powders compressibility data

“…In addition to the studies developed for Ti powders, TiPM also includes the use of titanium hydride powders in the process called 'direct consolidation', which is the sintering of TiH 2 compacts without the need for the dehydrogenation step. It is a low cost and ecofriendly alternative since, in addition to the simpler process route, the raw material can be easily obtained from the hydrogenation of sponge fines or turnings [14][15][16][17].…”

In Situ Synchrotron Radiation Study of TiH2-6Al-4V and Ti-6Al-4V: Accelerated Alloying and Phase Transformation, and Formation of an Oxygen-Enriched Ti4Fe2O Phase in TiH2-6Al-4V

“…[1][2][3] TiH 2 has attracted extensive research interest for applications in hydrogen storage, [4] metal foaming, [5] and hydroprocessing. [6] In the context of powder metallurgy (PM), research on TiH 2 was initiated in the 1960s [7] but recent years have seen a significant renewed interest in PM TiH 2 for a few good reasons, including [8][9][10][11][12][13] : (a) the use of TiH 2 powder can result in higher sintered densities and often better mechanical properties; (b) TiH 2 powder can be more affordable than the hydride-dehydride (HDH) Ti powder; and (c) the use of TiH 2 powder can lead to lower oxygen content in as-sintered Ti materials. This is due to the release of atomic hydrogen after heating of TiH 2 , which can reduce the surface oxide film on the TiH 2 powder particles.…”

“…This represents another potential unique feature of the PM TiH 2 but no direct evidence has been reported yet. One reason is that most relevant studies including the sintering of titanium alloys using TiH 2 powder were carried out at heating rates of less than 30°C/min, [3,8,[10][11][12][13] which has been shown to be inadequate to avoid the formation of the a phase. [3] The other reason is that it requires the use of in situ, instantaneous and high-temperature phase identification to monitor phase transformation during the dehydrogenation of TiH 2 .…”