Transition from Nabarro--Herring to Harper--Dorn creep at low stress levels
Journal Article
·
· Scr. Metall.; (United States)
An analysis suggests that Harper-Dorn creep may be a general mechanism of high temperature flow. Based on limited experimental data for three pure metals and two alloys, the minimum grain size required for the Harper-Dorn process is estimated as 1.7 x 10/sup 6/ b. This typically corresponds to a transition grain size of approximately 500 ..mu..m. The experimental results at present available are consistent with a transition from Nabarro-Herring to Harper-Dorn creep as the grain size is increased above this limiting value. (GHT)
- Research Organization:
- Univ. of Southern California, Los Angeles
- OSTI ID:
- 5379449
- Journal Information:
- Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 11:10; ISSN SCRMB
- Country of Publication:
- United States
- Language:
- English
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