Correlation of Microstructure with Fracture Toughness Properties in Metals. Part II.
Abstract
Ti-6Al-4V alloy in three mill product forms and Ti-6Al-6V-2Sn-0.7Fe-0.7Cu (Ti-662) alloy in one product form were studied for the purpose of establishing a correlation between microstructures and fracture toughness. The Ti-6Al-4V mill products were 1- and 2.4-in. plates and 4- x 4-in. forged billets. The Ti-662 product was 1-in. plate. Alloy, mill produce, processing and heat-treatment variables produced 21 microstructural conditions, complementing the 28 conditions studied in a previous contract with Naval Air Systems Command, Contract N00019-72-C-0545. Tension test, fracture toughness, salt-water stress-corrosion crack-growth threshold, and fatigue crack growth rate properties were determined. Light optical microscopy, scanning electron microfractography, and transmission electron microscopy were the metallographic means employed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 21, 1975
- Accession Number
- ADA015977
Entities
People
- Frank A. Crossley
- Richard E. Lewis
Organizations
- Lockheed Martin Missiles and Space