A Comparison for Predicting Creep Curves of 10Cr9MoW2VNbBN Steel by Different Methods

JIANG Feng; LIU Chun-hui; CHENG Cong-qian; ZHAO Jie

Materials and Mechanical Engineering > 2015 > 39(3): 89-93.

JIANG Feng, LIU Chun-hui, CHENG Cong-qian, ZHAO Jie. A Comparison for Predicting Creep Curves of 10Cr9MoW2VNbBN Steel by Different Methods[J]. Materials and Mechanical Engineering, 2015, 39(3): 89-93.

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A Comparison for Predicting Creep Curves of 10Cr9MoW2VNbBN Steel by Different Methods

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Received Date: November 11, 2014

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A prediction for the creep curves of 10Cr9MoW2VNbBN steel through θ projection method and self-built correction model was performed,and then compared with the creep experimental data at 600℃ and 650℃.The results show that the θ projection method can well describe the relationship between the creep strain and time,however,it can not describe the relationship between the creep rate and time objectively.The self-built correction model in this paper can describe the real creep behavior of the tested steel.However,when the creep curves based on the self-built correction model combining with fracture strain were used to extrapolate the creep rupture life,the extrapolated value was much higher than the real one.
- θ projection method,
- composite correction model,
- 10Cr9MoW2VNbBN steel,
- prediction life,
- creep

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