Time-dependent flow properties from indentation tests
Abstract
An effort was undertaken to investigate the possibility of using indentation tests to extract time-dependent flow property information from small, cylindrical specimens. Lead specimens were tested by conventional creep, indentation creep, conventional stress relaxation, and indentation load relaxation techniques. Indentation creep and indentation load relaxation results were found to fit the conventional creep and the stress relaxation results, respectively, by defining an effective stress σeff = Pm/5.33 and an effective strain rate ɛ eff = {h}/{D}, where P is the indentation pressure, D is the indentor diameter, and h the indentation rate. Of the two indentation tests, the indentation load relaxation test should be the easier to scale down to smaller specimens.
- Publication:
-
Journal of Nuclear Materials
- Pub Date:
- 1981
- DOI:
- 10.1016/0022-3115(82)90819-4
- Bibcode:
- 1981JNuM..104.1539L