Finite element analysis and experimental research on notched strengthening effect of P92 steel. (May 2014)

• Record Type: Journal Article
• Authors: Ni, Y. Z.; Lan, X.; Xu, H.; Mao, X. P.
• Is Part Of: Materials at high temperatures. Volume 31:Number 2(2014)
• Page Start: 185
• Page End: 190
• Publication Date: 2014-05
• Subjects: Materials at high temperatures -- Periodicals; High temperatures -- Periodicals; 620.1121705
• DOI: 10.1179/1878641314Y.0000000010
• Languages: English
• ISSNs: 0960-3409

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>The notched strengthening effect during creep of P92 steel has been studied by finite element analysis and experimental research. It was found that there was a transforming tendency from ductile to brittle at the root of the notch and the extent of the transforming intensified with the increment of the nominal stress. It was the transforming tendency that increased the value of creep life enhancement factor. With the help of finite element software, Kachanov–Rabotnov creep damage constitutive model was embedded into the interface program and the notched specimens creep was simulated. The result has shown the Kachanov–Rabotnov model can be used to simulate the notched strengthening effect of P92 steel accurately when the material constant α = 0·73.</p> </abstract>