A Study on the Use of Positron Annihilation as a Non-Destructive Evaluation Tool for Micro-Structure Defects in Aluminum, Titanium and Their Alloys and Nickel Base Superalloys.
Abstract
The work carried out during the three year 1973-1977 period on the evaluation of positron annihilation as a non-destructive evaluation tool for micro-structure defects in some engineering materials, such as aluminum, titanium and their alloys and nickel base superalloys are reported. Positron annihilation has been found to be useful as a non-destructive evaluation tool for microstructure defects in the engineering materials tested. However, the method used, positron lifetime measurement, is well established but relatively time consuming. Futher studies on more engineering materials with various kinds of microstructure defects using a relatively fast method, positron annihilation gamma-ray Doppler Broadening is recommended. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1977
- Accession Number
- ADA046441
Entities
People
- Shu-jen Tao