Study on Creep Behaviors of T92 Steel under Multiaxial Stress State

Xue Ping Mao; Yang Yu; Chao Li; Sai Dong Huang; Hong Xu; Yong Zhong Ni

doi:10.4028/www.scientific.net/AMR.860-863.774

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 860-863Study on Creep Behaviors of T92 Steel under...

Study on Creep Behaviors of T92 Steel under Multiaxial Stress State

Abstract:

Creep tests for smooth specimens and notched specimens of T92 steel were carried out to study the effect of multiaxial stress state on creep rupture behaviors at 650°C. Creep rupture life was estimated by representative stress at multiaxial state of stress, the failure behavior of multiaxial creep was analyzed, and Kachanov creep damage formula was used to analyze the experimental data. The results show that the notch strengthens rupture life, multiaxial rupture behavior is controlled by mixed parameters, the creep ductility of the smooth and notched specimen decreases with rupture time, and damage factors of the smooth specimen and notched specimen are similar according to Kachanov formula.

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Periodical:

Advanced Materials Research (Volumes 860-863)

Pages:

774-779

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.860-863.774

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Online since:

December 2013

Authors:

Xue Ping Mao, Yang Yu*, Chao Li, Sai Dong Huang, Hong Xu, Yong Zhong Ni

Keywords:

Creep, Damage, Multiaxial Stress State, Notch, T92 Steel

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