Creep-Rupture Properties of Incoloy 800H, 2-1/4Cr-1Mo Steel,and Hastelloy X Alloys in Simulated HTGR Environment.

摘要

Results of creep-rupture tests performed in a simulated HTGR helium environment (design basis helium) are presented and compared with available air data for Incoloy 800H,Hastelloy X,and 2exp 1 /sub 4Cr--1Mo steel. Tests were performed at temperatures representative of HTGR operating conditions for each alloy (900to 1600exp 0 F). Test durations to date were generally less than 4000 h. Results indicate that creep-rupture properties of these alloys in the test environment are consistent with the expected properties in air. Additional tests of 10,000 h duration are planned. 10figures, 4tables. (ERA citation 02:001002)