Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 626, Issue -, Pages 330-337Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.12.085
Keywords
CMSX-4; Small punch creep; Rafting
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Funding
- EPSRC Rolls-Royce Strategic Partnership in Structural Metallic Systems for Gas Turbines [EP/H500383/1, EP/H02230911]
- EPSRC [EP/H500383/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H500383/1] Funding Source: researchfish
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Small punch testing is now a widely recognised approach for obtaining useful mechanical property information of critical structural components, particularly in the nuclear industry. However, to date the utilisation of this method has been limited to isotropic materials such as aluminium alloys and steels. This paper will look to utilise the small punch (SP) test to assess the creep response of < 001 >-orientated CMSX-4(1) at temperatures above 950 degrees C. An orthogonal rafting regime of the gamma' structure is observed in the post-test microstructure due to the biaxial tension state typically produced in a SP test. Interpretation of the SP results to correlate with uniaxial creep data is carried out by employing the k(sp) approach in order to provide a platform for future material assessment. (C) 2015 Elsevier B.V. All rights reserved.
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