Prediction Methodology of Creep Performance from Stress Relaxation Measurements

Abstract:

An estimation method to predict creep performances of high temperature structural materials has been proposed. The method is to use a simplified and normalized model of stress relaxation to derive creep strain rates and creep strain vs. time curves from stress relaxation measurements through an integrated analytical procedure according to the relationship between stress relaxation and creep. In order to validate the approach, the predicted results are compared to the experimental results of uni-axial isothermal creep tests conducted on 1Cr10NiMoW2VNbN steel with the same temperature of stress relaxation tests. Good agreement between results of relaxation tests and the predicted results indicates that the developed method can be recommended in the creep behavior evaluation of high temperature materials.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 920-923
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.920
• Online since: September 2013
• Authors: Jin Quan Guo, Hui Chao Shi, Wu Zhou Meng
• Keywords: Creep Behavior Prediction, Data Conversion, Relaxation Model, Stress Relaxation Tests

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