화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.17, No.5, 268-272, May, 2007
Inconel 617의 고온열화에 따른 미세구조 및 고온 기계적 특성
Effect of High Temperature Degradation on Microstructure and High Temperature Mechanical Properties of Inconel 617
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Inconel 617 is a candidate tube material for high temperature gas-cooled reactors(HTGR). The microstructure and mechanical properties of Inconel 617 were studied after exposure at high temperature(). The dominant oxide layer was Cr-oxide. The internal oxide and Cr-depleted region were observed below the Cr-oxide layer. The depth of Cr-depleted zone and internal oxide increased with exposure time. The major phases of carbides are . The composition of were determined to be Cr-rich and Mo-rich, respectively. carbide is more stable than at high temperature. From the results of high temperature compression test, there were no significant changes in hardness and yield strength upon increasing exposure time.
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