Characteristics of the high temperature mechanisms of creep and recovery in graphite: part 1
| dc.contributor.author | College of Aeronautics, (Cranfield) | |
| dc.date.accessioned | 2017-08-22T14:52:36Z | |
| dc.date.available | 2017-08-22T14:52:36Z | |
| dc.date.issued | 1963-08 | |
| dc.description.abstract | An apparatus has been developed for determining the high temperature creep and recovery characteristics of graphite by applying torsional stresses to thin-walled tubes. This method has the advantages of a simple stress system, constant stress for constant load, easy rapid removal of load and the independence of the strain measurement from thermal expansion. Torsional, stress-strain curves show a decreasing modulus with increasing temperature from 2000 - 2850°C. The rate of creep in this range is increased by increasing temperature and stress. Recovery rate is not so sensitive to increasing temperature. Using a method developed for metals, where recovery can be subtracted from forward creep, a secondary creep rate is deduced. This rate, when plotted according to the Arrhenius' equation, yields an activation energy for secondary creep of 154 kcals over the temperature range 2100 - 2700°C. These results are critically examined and the future extension of the work discussed. | en_UK |
| dc.identifier.uri | http://dspace.lib.cranfield.ac.uk/handle/1826/12359 | |
| dc.language.iso | en | en_UK |
| dc.publisher | College of Aeronautics | en_UK |
| dc.relation.ispartofseries | CoA/N/Mat-1 | en_UK |
| dc.relation.ispartofseries | 1 | en_UK |
| dc.title | Characteristics of the high temperature mechanisms of creep and recovery in graphite: part 1 | en_UK |
| dc.type | Report | en_UK |