Titanium-beta

W. J. Evans. Optimising mechanical properties in alpha + beta titanium alloys. Mater Sci Eng A 243 %%, 1998. 

An extremely versatile catalyst for a variety of synthetically useful oxidations with aqueous hydrogen peroxide is obtained by isomorphous substitution of Si by Ti in molecular sieve materials such as silicalite (the all-silica analogue of zeolite ZSM-5) and zeolite beta. Titanium(IV) silicalite (TS-1), developed by Enichem (Notari, 1988), was the progenitor of this class of materials, which have become known as redox molecular sieves (Arends et al., 1997). 

It is shown here that alpha, beta and alpha-beta titanium alloys can be friction stir welded. The phase transformations that occur in the nugget region and the heat affected zone are discussed. Residual stresses were found to be quite high in the present work. Tensile properties in transverse direction were... 

Perng TP, Altstetter CJ. On the effective hydrogen permeability in metastable beta titanium alloy, niobium and 2.25cr-l mo ferritic steel. Metall Trans. 19 17A 2086. 

O.M. Ivasishin, P.E. Markovsky, Y.V. Matviychuk, and S.L. Semiatin, Precipitation and Recrystallization Behavior of Beta Titanium Alloys During Continuous Heat Treatment, Metall. Mater. Trans. A, Vol 34, 2003, p 147-158... 

M. A. Gaudett, J. R. Scully, Environmentally Assisted Cracking of High Strength Beta Titanium Alloys, Report to the Office of Naval Research, Grant No. N000014-91-J-4164,1994. 

Steinemann, S.G., Mausli, P.-A., Szmukler-Moncler, S., Semlitsch, M., Pohler, O., Hintermann, H.-E. and Perren, S.M. (1993) Beta-Titanium Alloy for Surgical Implants, Proc. of the 7th World Conf. on Titanium, pp. 2689-2696. 

Wang, K., Gustavson, L. and Dumbleton, J. (1993) The characterization of Ti-12Mo-6Zr-2Fe. A new biocompatible titanium alloy developed for surgical implants. Beta Titanium in the 1990s. The Minerals, Metals Materials Society, 2, 49-60. 

Metallurgical classification. The crystallographic structure of titanium exhibits a phase transformation from a low-temperature close-packed hexagonal arrangement (i.e., a-hcp, alpha-titanium) to a high-temperature form body-centered cubic crystal lattice (i.e., 6-bcc, beta-titanium) at 882°C. This transformation can be considerably modified by the addition of alloying elements (Table 4.52) to produce at room temperature alloys that have all alpha, all beta, or alpha-beta structures. 

S] Kolman, D. G. and Scully, J. R. On the Requirement for a Sharp Notch or Precrack to Cause Environmentally Assisted Crack Initiation In Beta Titanium Alloys Exposed to Aqueous Chloride Environments, ASTM STP 1298, ASTM International, West Conshohocken, PA, pp. 61-73. 

Young, L. M., "Environment-Assisted Cracking in Beta Titanium Alloys, M.S. thesis, University of Virginia, Charlottesville, VA, 1993. 

F 620, Specification for Alpha Plus Beta Titanium Alloy Forgings for Surgical Implants... 

H.-T. Chen, C.-H. Hsiao, H.-Y. Long, C.-J. Chung, C.-H. Tang, K.-C. Chen, and J.-L. He, Micro-arc oxidation of [beta]-titanium alloy Structural characterization and osteoblast compatibility, Surf. Coat Technol, 204, 1126-31 (2009). 

Deformation Textures and Microstructures in Alpha- and Beta-Titanium Alloys... 

Fee70] Feeney, J.A. and Blackburn, M.J., Effect of Microstmeture on the Strength, Tbu mess, and Stress-Corrosion Cracking Susceptibility of a Metastable Beta Titanium AUoy (Ti-11.5Mo-6Zr-4.5Sn), Metall. TYans., Vol 1,1970, p. 3309-3323... 

Fis70] Fisher, E.S. and Dever, D., Relation of the C Elastic Modulus to Stability of b.c.c. Ti-ansition Metals, Acta Metall.,Wo 18,1970, p. 265-269 [Fis70 ] Fisher, E.S. and Dever, D., The Single Crystal Elastic Moduli of Beta-Titanium and Titanium-Chromium Alloys, in [Jaf70], p. 373-381 [Fis75] Fisher, E.S., A Review of Solute Effects on the Elastic Moduli of bcc Transition Metals, in [Col75], p. 199-225... 

HidSO] Hida, M., Sukedai, E., Yokohari, Y., and Nagakawa, A., Thermal Instability and Mechanical Properties of Beta Titanium-Molybdenum Alloys, in [KlM80],p. 1327-1334... 

Nis82] Nishimura, T, Nishigaki, M., and Kusamichi, H., Aging Characteristics of Beta Titanium AUoys, in [Wil82], p. 1675-1689... 

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