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Influence of Oxidation to Small Punch Creep Test
In order to validate a procedure for creep rupture tests using small punch specimens, the influences of oxidation on the creep deflection curve, rupture time and ductility of miniature specimens were investigated. Using disc test specimens of 10mm in diameter and 0.5mm in thickness, a variety of sma...
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Published in: | Key engineering materials 2007-09, Vol.353-358, p.461-464 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | In order to validate a procedure for creep rupture tests using small punch specimens, the
influences of oxidation on the creep deflection curve, rupture time and ductility of miniature
specimens were investigated. Using disc test specimens of 10mm in diameter and 0.5mm in thickness,
a variety of small punch creep (SPC) tests for Cr5Mo steel at the condition of 550°C-404N and
650°C-189N under the protection of different Argon flow and in air atmosphere were firstly carried
out. Metallographic observations, micro-hardness testing and measurement for these specimens of
SPC test were performed. It indicates that the oxidized layer of specimens integrates and the residual
thickness of specimens increases, while the hardness of specimens increases with the increment of the
Argon flow. Moreover, the different oxidation degrees of specimens with the surface morphology
were compared in this paper. The test results show the rupture time of specimens can be effectively
prolonged by the protection of different Argon flow. |
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ISSN: | 1013-9826 1662-9795 1662-9795 |
DOI: | 10.4028/www.scientific.net/KEM.353-358.461 |