Creep and oxidation behaviors of alloy 617 in air and helium environments at 1173 K

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Abstract

Creep and oxidation behaviours of Alloy 617 in air and helium (He) environments at 1173K were comparatively investigated under different applied stress levels. There were no large differences in the shapes of the creep curves between the air and He environments. Creep rupture time in the He environment was shorter than that in air. The outer Cr-oxide thickness of the air specimens was thicker in short-tested duration than that of the He specimens. However, in the long-tested duration over 3,000h, the Cr-oxide thickness in the He environment was larger than in air. It was found that creep rupture life was closely related to the thickness of the outer Cr-oxide layer, because the form of the outer Cr-rich oxide layer brings about the Cr-depleted region which may deteriorate material strength or creep life. © 2013 The Authors.

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APA

Kim, W. G., Lee, G. G., Park, J. Y., Hong, S. D., & Kim, Y. W. (2013). Creep and oxidation behaviors of alloy 617 in air and helium environments at 1173 K. In Procedia Engineering (Vol. 55, pp. 819–822). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2013.03.337

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