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The development of creep damage constitutive equations for low Cr-Mo alloy steel and its weldment at low stress

Xu, Qihua, Xu, Qiang and Lu, Zhongyu (2013) The development of creep damage constitutive equations for low Cr-Mo alloy steel and its weldment at low stress. In: 6th International ‘HIDA’ Conference: Life/Defect Assessment & Failures in High Temperature Plant, 2nd-4th December 2013, Nagasaki, Japan.

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Abstract

The ultimate objective of this research project is to develop creep damage constitutive equations for low Cr-Mo alloy and its weldment under low stress (0.2-0.4 yield stress,σ_Y). This paper summarizes a critical analysis on the cavity nucleation and growth and the deformation mechanisms and creep damage evolution characteristics at low stress with temperature ranging from 450 °C to 650 °C, in order to firmly establish the physical base for the theoretical constitutive modeling work. Moreover, it covers the influence of the stress level on the development of cavity nucleation and growth, leading to the final rupture, and proposes and discusses a new idea for failure criterion to be used in the constitutive equations under uni-axial stress state. This paper contributes to knowledge and the development of methodology.

Item Type: Conference or Workshop Item (Paper)
Contributors:
ContributionNameEmailORCID
AuthorQihua, Xuu1372662@hud.ac.ukUNSPECIFIED
AuthorQiang, XuUNSPECIFIEDUNSPECIFIED
AuthorZhongyu, LuUNSPECIFIEDUNSPECIFIED
AuthorUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Subjects: Q Science > Q Science (General)
Schools: School of Computing and Engineering
Related URLs:
Depositing User: Qihua Xu
Date Deposited: 17 Feb 2015 14:34
Last Modified: 04 Dec 2016 10:05
URI: http://eprints.hud.ac.uk/id/eprint/23246

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