Special Features of the Failure of Alpha-Titanium Alloys at High Temperatures,
Abstract
The plasticity of Ti alpha-alloys in fine- and coarse-grained states was studied at high temperatures. The anomalous decrease in plasticity was observed from 500 degrees to the transformation temperature. The failure of Ti alloys at high temperatures has an intergranular character. The failure mechanism at high temperatures consists in accumulation of pores, which causes microfractures. The pores are formed on the grain boundaries at any type of stresses in the samples where compressive stresses are absent. Small pores can be healed by annealing. The formation of pores at grain boundaries occurs both during prolonged application of stress and during deformation at rates approaching static loading. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1972
- Accession Number
- AD0750964
Entities
People
- L. S. Moroz
- S. S. Ushkov
Organizations
- National Air and Space Intelligence Center