The Temperature Dependence of the Deformation and Oxidation Behavior of an Age-Hardenable Beta + Alpha-Two Titanium Alloy
Abstract
The beta Ti alloy Ti-23Nb-11Al (at %) is unique in that it is age hardenable due to the formation of lath-like alpha 2-phase precipitates based on Ti3Al. Furthermore age-hardening occurs at temperatures significantly higher than most conventional beta Ti alloys. This suggests the possibility of the elevated temperature usage of alpha 2-strengthened beta Ti alloys such as Ti-23Nb-11Al. The study examines the compressive deformation behavior of the Ti-23Nb-11Al alloy in the -196 deg. C to 650 deg. C temperature range and demonstrates that very high strengths are possible even at 600 deg. C by precipitation hardening due to the (alpha 2 phase. The thermogravimetric oxidation behavior in laboratory air from 600 deg to 700 deg. C indicates parabolic behavior consistent with oxygen diffusion through a scale.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 05, 1993
- Accession Number
- ADA262232
Entities
People
- D. M. Goto
- Donald A. Koss
- L. S. Quattrocchi
Organizations
- Pennsylvania State University