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Title: The effect of alloying elements on creep behaviour, with particular reference to steel
Author: Glen, J.
Awarding Body: University of Glasgow
Current Institution: University of Glasgow
Date of Award: 1959
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A large number of creep tests on various steels were carried out to study the effect of compositions heat treatment, and testing variables on the creep resistance. Some of this work has been published It was found however that the order of creep resistance of various steels could be changed by altering the stress or temperature of testing. A similar effect can occur on comparing the same steel in the normalised and in the normalised and tempered condition. The former is always the bettor at high stresses and/or temperatures but the tempered steel may be the better at low stresses and temperatures. Very long time creep and rupture tests were carried out on 0.5% molybdenum steel, 1% chromium - 0.5%molybdenum steel and on molybdenum-vanadium steel. From these tests an estimate of the creep and rupture strength in 100,000 hours was obtained and the change in rupture ductility with increasing testing time was demonstrated. The above tests indicated that the creep of commercial alloys was too complex a problem to be easily solved even by the accumulation of a large body of creep test data, and it was decided to approach the problem from a different angle. The effect of individual alloying elements was thus investigated by carrying out true stress-true strain tensile tests on various steels over a range of temperature(3,5).
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (D.Sc.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available