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An Approach to Predict Creep Strain and Rupture Life of Heat Resistant Steels Based on ZC Parameter

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Abstract:

The current paper proposes a so-called Zc method to evaluate creep strain and rupture life of heat resistant steels by considering the scattering distribution of experimental data, where the Zc value indicates the deviation of the fitted σ-P curves at different creep strains to the main curve. It is shown that the value of Zc increased rapidly at first and then became stable with increasing creep strain, meanwhile, the degree of deviation between experiment data and the corresponding fitted curves came to decrease. The current method provides a statistic method for predicting creep stain and rupture life and get good agreement with experiment result.

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Periodical:

Key Engineering Materials (Volume 774)

Pages:

559-563

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.774.559

Citation:

Cite this paper

Online since:

August 2018

Authors:

Jie Zhao*, Tie Shan Cao, Xin Yue Liu, Cong Qian Cheng

Keywords:

Creep Strain, Heat Resistant Steel, Prediction, Rupture Life

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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