In situ strengthening of titanium with yttrium: texture analysis

Microstructure and Texture of Al&ndash;2Si&ndash;<i>x</i>Sn (<i>x</i> = 0, 4, 8 mass%) Alloys Processed by Equal Channel Angular Pressing

“…In the last two decades the main efforts have been focused on Cu or Al systems, with body centred cubic (bcc) second phase such as Nb or Ta, i.e., CuX (where X = Nb, Ta, Cr, V or Fe), 28) having the objective of increasing the mechanical strength of these alloys. In the 1990's, some studies started with hexagonal (hcp) metals including TiY, 9,10) MgTi, 11) AlTi 12) and Al Mg, 13) however, the understanding of the fundamental mechanisms controlling the mechanical deformation and the microstructure evolution is still unclear.…”

Microstructure-Strength Relationship of a Deformation-Processed Aluminum-Magnesium Composite

“…Some recent studies of Ti-Y [13][14][15][16], Mg-Li-Ti [17][18][19], A1-Ti [20] have shown hexagonal close packed (HCP) metals' potential application in DMMC'S. The HCP metals will develop a e 1010> wire texture when axisymmetrically deformed.…”

“…In order to extend use of the deformation processing to non-cubic systems, researchers have studied hexagonal close packed (HCP) metals [13][14][15][16][17][18][19][20]. The candidate metals should possess good ductility, mutual immiscibility and roughly similar mechanical properties.…”

A high specific strength, deformation-processed scandium-titanium composite

“…Similar behavior has been observed in other DMMC's that were either hot worked or annealed after cold work. 14 solid solubility of Ti in a -Sc and of Sc in a -Ti is approximately 2% at 873 K. 20 Although the diffusion coefficients for Sc diffusing in Ti and vice versa are unknown, this degree of solubility probably makes the Sc-Ti system somewhat vulnerable to rapid coarsening at elevated temperature, since both phase boundary diffusion and bulk diffusion could contribute to transport. With finer phase sizes, boundary diffusion would be expected to dominate the process.…”

“…12,13 Work in HCP matrix DMMC's 14,15 has been more limited, but suggests that the ability of HCP metals to be axisymmetrically deformed to large true strains is limited by their tendency to assume texture orientations that permit only plane strain. Texture-induced plane straining would not necessarily be a limitation for rolled DMMC's, and one of the motivations for this study was to determine if anomalously high strengths would result from extensive deformation processing by rolling a twophase Sc -Ti DMMC.…”