Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1580724 | Materials Science and Engineering: A | 2009 | 4 Pages |
Abstract
New relationships, incorporating the activation energy for matrix diffusion (300 kJ mol−1) and the ultimate tensile strength values at the creep temperature, allow effective rationalization of the multi-batch stress rupture properties for Grade 92 steel (9Cr–0.5Mo–1.8W–V–Nb). These approaches lead to straightforward procedures for extrapolation of short-term results, with creep life measurements from tests lasting up to only 5000 h providing reasonable estimates of 100,000 h rupture strengths. Validation of this new methodology would therefore offer the prospect of cost-effective acquisition of long-term creep design data.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
B. Wilshire, P.J. Scharning, R. Hurst,