Effect of Intermittent Heating on Creep Behaviour of Advanced 9-12%Cr Power Plant Steels

Abstract:

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Critical high temperature components of machines and structures are often subjected to complicated load and temperature histories. The closest laboratory simulation of service loading conditions involves creep under nonsteady temperatures and stresses. For example, the start up and shut down cycles can be well simulated by temperature variation by use of intermittent heating tests. Such approach is illustrated by recent experimental results on advanced high creep strength 9- 12%Cr ferritic-martensitic steels (P91, P92 and E911). A comparison between the creep characteristics of nonsteady and monotonously creep specimens has revealed no significant deterioration of the creep strength and fracture resistance of these steels in power-law (dislocation) creep.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

81-84

DOI:

10.4028/www.scientific.net/MSF.561-565.81

Citation:

V. Sklenička et al., "Effect of Intermittent Heating on Creep Behaviour of Advanced 9-12%Cr Power Plant Steels", Materials Science Forum, Vols. 561-565, pp. 81-84, 2007

Online since:

October 2007

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$35.00

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