|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Oil and Gas and AMREE Oil & Gas III
||High Strength Nickel-based Alloys for HPHT Applications
||Ramgopal Thodla, Brandon C Rollins, Jeff Hawk, Colum Holtam
|On-Site Speaker (Planned)
Increasing pressures and temperatures in O&G applications there has been a push to use these materials in subsea high pressure high temperature applications. This has led to the need for considering high strength nickel based alloys like 718 and 625+. There are two primary damage modes that are relevant to these conditions, one which is associated with hydrogen embrittlement due to cathodic charging at low temperature and the other associated with SCC at elevated temperatures in chloride containing environments. The role of applied potential on the CGR behavior of 718 and 625+ under cathodic charging conditions will be discussed along with the role of the loading i.e. a comparison between rising displacement and constant K tests. The relationship between the repassivation potential and susceptibility to SCC at elevated temperatures in chloride containing environments will be presented. The differences in the SCC behavior of 718 and 625+ will be discussed.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)