High-tensile, malleable molded bodies of titanium alloys

Abstract

The object of the invention is to create high-tensile molded bodies that are made of titanium alloys and are malleable at room temperature and that, compared with the metallic glasses, have macroscopic plasticity and work hardening, without other properties, such as breaking resistance, elastic elongation or corrosion behavior being thus greatly impaired. The molded bodies according to the invention are characterized in that they are made of a material that in its composition conforms to the formula Ti_a E1_b E2_c E3_d E4_e, where E1 comprises one or more elements of the group containing the elements Ta, Nb, Mo, Cr, W, Zr, V, Hf and Y, E2 comprises one or more elements of the group containing the elements Cu, Au, Ag, Pd and Pt, E3 comprises one or more elements of the group containing the elements Ni, Co, Fe, Zn, Mn and E4 comprises one or more elements of the group containing the elements Sn, Al, Ga, Si, P, C, B, Pb and Sb, where a=100−(b+c+d+e), b=0 to 20, c=5 to 30, d=5 to 30, e=1 to 15 (a, b, c, d, e in atomic %). The molded bodies have a homogenous microstructure, mainly comprising a glassy or nanocrystalline matrix with ductile dendritic body-centered cubic phase embedded therein. A third phase with low volumetric proportion can be present. Such molded bodies can be used as high-stress components, e.g., in the aircraft industry, space aviation and the automobile industry, but also for medical technical equipment and implants in the medical field.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application is a Continuation of International Patent Application No. PCT / DE03 / 01790 filed May 28, 2003, and claims priority under 35 U.S.C. § 119 of German Patent Application No. 102 24 722.6 filed May 30, 2002. Moreover, the disclosure of International Patent Application No. PCT / DE03 / 01790 is expressly incorporated by reference herein in its entirety.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The invention relates to high-tensile molded bodies that are made of titanium alloys and are malleable at room temperature. Such molded bodies can be used as high-stress components, e.g., in the aircraft industry, space aviation and the automobile industry, but also for medical technical equipment and implants in the medical field, where high demands are made on the mechanical load-bearing capacity, corrosion resistance and surface stressing, in particular with complicated molded components. [0004] 2. Discussi...

AI Technical Summary

Benefits of technology

[0010] The object of the invention is to create high-tensile molded bodies that are malleable at room temperature and made of titanium alloys and that, compared with the referenced metallic glasses, have macroscopic plasticity and work hardening with forming processes at room temperature, without other properties such as strength, elastic elongation or corrosion behavior being thus greatly impaired.

Problems solved by technology

Until now it has been impossible to produce diphase titanium alloys with a high-tensile glassy matrix and ductile, malleable, dendritic body-centered cubic phase embedded therein.