|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advanced Real Time Imaging
||The Influence of Temperature on Strength: Are Concentrated BCC Alloys Different than Elements and Dilute Alloys?
||Daniel B. Miracle, Satish Rao, Oleg N. Senkov, Carolina Frey, Tresa M. Pollock
|On-Site Speaker (Planned)
||Daniel B. Miracle
The influence of temperature on strength in BCC metals and alloys is not simple. Thermally-dependent regions are seen at both low and high temperatures where strength drops quickly with increasing temperature, and an intermediate plateau is usually seen between them where strength is relatively insensitive to temperature. Together, the complex (three or more principal elements) and concentrated (principal elements of at least 5-10 at. % each) nature of refractory complex, concentrated alloys (RCCAs) may introduce new strengthening mechanisms compared to simpler BCC materials. This work addresses the question, “is the temperature dependence of strength similar or different for RCCAs compared to BCC elements and conventional, dilute BCC alloys?” To answer this question, we evaluate strength vs. temperature for 68 RCCAs, six refractory elements, and six conventional (usually dilute) refractory alloys. From this work, general features and trends for the temperature-dependent strength of RCCAs are established and described.