|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Late News Poster Session
||O-45: The Validity of Using the Hollomon-Jaffe Parameter to Predict Hardness of Tempered Low-carbon High-performance Stainless-steel Alloys for Nuclear Applications
||Shmuel Samuha, Jeff Bickel, Thomas Lienert, James Valdez , Tarasankar DebRoy , Tuhin Mukherjee, Stuart A Maloy , Peter Hosemann
|On-Site Speaker (Planned)
The Hollomon-Jaffe (H-J) parameter is traditionally employed to describe the combined effect of time and temperature in a tempering treatment, yet not to predict the hardness following a heat treatment (HT). The present work was undertaken with the object of exploring this last possibility. For this purpose, the low-carbon, high-performance Ferritic/Martensitic T-91 stainless-steel alloy, a potential candidate for structural steel in nuclear reactors, was chosen. The alloy was austenized at three different temperatures, yielding different onsets of prior austenite microstructures, then tempered using different soaking times and temperatures. In total, 51 HT combinations were evaluated. Variations in the hardness were interpreted in the context of fundamental metallurgical characteristics using advanced diffraction and analytical methods. Based on the H-J methodology, a logistic function was established, successfully predicting the decrease in hardness following tempering, estimating the onset of hardness changes and the end of the tempering.
||Iron and Steel, Characterization, Mechanical Properties