Effect of manganese and homogenization on the phase stability and properties of Cu–Al–Be shape memory alloys
| Autor: | S. M. Murigendrappa, Bala Narasimha Guniputi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Austenite
Manganese Mining engineering. Metallurgy Materials science Cu–Al–Be technology industry and agriculture TN1-997 Metals and Alloys Thermodynamics chemistry.chemical_element Shape-memory alloy Phase transformation Microstructure Homogenization (chemistry) Grain size Surfaces Coatings and Films Biomaterials chemistry Shape memory alloys Phase (matter) Ceramics and Composites Thermal treatment Ternary operation Two stage transformation |
| Zdroj: | Journal of Materials Research and Technology, Vol 14, Iss, Pp 1551-1558 (2021) |
| ISSN: | 2238-7854 |
| DOI: | 10.1016/j.jmrt.2021.07.027 |
| Popis: | In this study, the effect of addition of manganese to the ternary Cu–Al–Be shape memory alloys on phase stability, phase transformation temperatures, microstructure, morphology and grain size has been investigated. Secondly, the effect of betatization temperatures and time period has been investigated on the phases and properties of Cu–Al–Be–Mn SMAs. Results reveal that the addition of manganese in the alloys with Al ≥ 11.8 wt.% forms coexistence of β 1 ′ and γ 1 ′ martensites, and manganese ≥1 wt.% forms austenite β 1 (DO3). DSC studies exhibit two stage reverse transformation attributes to coexistence of martensites. Increase in manganese decreases the transformation temperatures and increase in betatization temperature and time increases transformation temperatures. Alloying manganese didn't exhibit significant grain refinement and results reduced shape recovery due to the coexistence of martensites. |
| Databáze: | OpenAIRE |
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