|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Deformation and Damage Behavior during LCF, TMF and CF in an Advanced Heat Resistant Austenitic Stainless Steel
||Guocai Chai, Guocai Chai
|On-Site Speaker (Planned)
Future advanced ultra-supercritical power plant will be run at higher temperature and pressure. New materials will be used to meet the requirements. However, the structure integrity of these materials needs to be evaluated. Sanicro 25 is a newly developed advanced austenitic heat resistant stainless steel with the aims to be used in future 700°C or 650°C power plants to replace part of Ni based alloys. This paper provides an overview on the deformation and damage behavior in this material during LCF, TMF and CF. The cyclic stress strain response, microstructure evolution and fatigue life during LCF will be discussed. The influence of strain condition on the TMF behavior in the virgin and aged materials has been analyzed. CF behaviors at different hold-times, strains and temperatures have been investigated. The cyclic plastic deformation, precipitation behavior, recovery phenomena and local plasticity exhaustion have also been studied.
||Planned: Supplemental Proceedings volume