Abstract
During the course of the EU-funded Advanced-Creep Thematic Network,
ECCC-WG1 reviewed the applicability and effectiveness of a range of
model equations to represent the accumulation of creep strain in various
engineering alloys. In addition to considering the experience of
network members, the ability of several models to describe the
deformation characteristics of large single and multi-cast collations of
ε(t,T,σ) creep curves have been evaluated in an intensive assessment inter-comparison activity involving three steels, 2¼ CrMo (P22), 9CrMoVNb (Steel-91) and 18Cr13NiMo (Type-316). The
choice of the most appropriate creep model equation for a given
application depends not only on the high-temperature deformation
characteristics of the material under consideration, but also on the
characteristics of the dataset, the number of casts for which creep
curves are available and on the strain regime for which an analytical
representation is required. The paper focuses on the factors which can
influence creep model selection and model-fitting approach for
multi-source, multi-cast datasets.
Original language | English |
---|---|
Pages (from-to) | 80-88 |
Journal | International Journal of Pressure Vessels and Piping |
Volume | 85 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2008 |
MoE publication type | A1 Journal article-refereed |
Keywords
- creep strains
- creep
- creep properties
- modelling
- equations
- deformation
- alloy steels
- austenitic stainless steels
- martensitic stainless steels
- stainless steels