Corrosion and Creep of Candidate Alloys in High Temperature Helium and Steam Environments for the NGNP

Was, Gary ; Jones, J. W.

DOI  :  10.2172/1087118
RP-ID  :  ID14517/09-768
PID  :  OSTI ID: 1087118

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This project aims to understand the processes by which candidate materials degrade in He and supercritical water/steam environments characteristic of the current NGNP design. We will focus on understanding the roles of temperature, and carbon and oxygen potential in the 750-850 degree C range on both uniform oxidation and selective internal oxidation along grain boundaries in alloys 617 and 800H in supercritical water in the temperature range 500-600 degree C; and examining the application of static and cyclic stresses in combination with impure He environments in the temperature rang 750-850 degree C; and examining the application of static and cyclic stresses in combination with impure He environments in the temperature range 750-850 degree C over a range of oxygen and carbon potentials in helium. Combined, these studies wil elucidate the potential high damage rate processes in environments and alloys relevant to the NGNP.