SOLID-STATE PRESSURE BONDING OF TITANIUM ALLOY 6AL-6V-2SN
Abstract
High-strength titanium assemblies for Army weapon systems have been fabricated using solid-state bonding and controlled plastic deformation techniques to achieve union between individual components. For this application coalescence is induced by heating the metal about the abutting interface area between units to a temperature slightly above that of the beta transus of the alloy. At this temperature, diffusion and grain growth occur across the interfaces of abutting components producing the desired solid-state bond. During post-weld cooling of the bonded area through the two-phase alpha-beta region of the alloy, plastic deformation is initiated and completed at the weld area. This action refines any grains that recrystallized during the heating cycle and disperses any oxide inclusions which may have been trapped within the bond area. The final microstructure developed at the bond is typical of a wrought material and exhibits a definite grain-flow pattern throughout. It is indicated that alpha-beta titanium can be pressure-bonded to a strength and toughness approximately equal to the base material.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0625718
Entities
People
- F. J. Rizzitano
- Robert Fitzpatrick
- Robert M. Colton
- Warren C. Malatesta
Organizations
- United States Army Research Laboratory