|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Prof. K. Linga Murty
||Multiaxial Creep and Creep-fatigue
||James Stubbins, Kuan-Che Lan, John Sanders, Mohsen Dadfarnia, Petros Sofronis, Hsiao-Ming Tung, Xiang Liu, Calogero Sollima, Kun Mo, Guiseppe Brunetti
|On-Site Speaker (Planned)
Creep and creep-fatigue have been a limiting feature of elevated temperature design for advanced nuclear systems. The evaluation of the effects of steady and cyclic loading on materials performance at high temperatures is further complicated by multiaxial stress states. This paper will examine the effects of multiaxial stress states on the performance of high temperature alloys, particularly Alloy 617 and Alloy 230. The work will identify microstructural features that seem to control creep including the role of precipitate stability and evolution and the role of grain boundary cavitation in controlling creep life. The additional issue of creep-fatigue interaction will also be examined. This is a major issue for materials design since the design codes put a high degree of conservatism on the possible interacting influences of creep damage and fatigue damage. Nevertheless, the much of this conservatism stems from the results of fatigue with hold-time tests.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)