An Analysis of Charpy Impact Testing as Applied to Cemented Carbide.
Abstract
The impact energy or impact strength of WC-Co alloys is currently determined by loading an unnotched 1/4 inch x 1/4 inch x 2 inch sample in three point bending. This is done on a Charpy Impact tester of 24 ft. lbs. capacity (Model CIM-24, Manlabs, Inc.). The results of these tests are generally considered to be an indication of the 'toughness' of cemented carbide. However, much of the field experience where carbide is subjected to impact loading, such as in mining, does not correlate well with the charpy impact values of the various grades of cemented carbides. In an effort to better understand the nature and the limitations of impact testing, the above mentioned test was studied in detail via instrumentation of both the tester and the specimen.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 21, 1972
- Accession Number
- ADA008081
Entities
People
- R. C. Lueth
Organizations
- General Electric