Fracture Toughness and Aging Behavior of Alpha-Beta Titanium Alloys.
Abstract
Fracture toughness K sub Q, was studied as a function of microstructure for alloy no. 2, Ti-5.25Al-5.5V-0.9Fe-0.5Cu, at a y.s. of 180 Ksi (1241 MN/sq m, and for Ti-6Al-2Sn-4Zr-6Mo at y.s. of 160 Ksi (1100MN/sq m), with emphasis on alloy no. 2. For equiaxed alpha structures K sub Q initially decreased with increasing grain size (G.S.) and subsequently increased. Analysis of Widmanstatten plus grain boundary alpha data separated out the G.S. contribution which was attributed to increased plasticity when the G.S. became significantly large with respect to calculated plastic zone sizes. Attempts were made to calculate individual contributions of matrix and alpha to K sub Q. Experiments were conducted to correlate microstructure and mechanical properties for Ti-6-2-4-6.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1975
- Accession Number
- ADA019518
Entities
People
- Ernest Levine
- Harold Margolin
- Morris Young
- Yashwant Mahajan
Organizations
- New York University