Effect of cyclic cryogenic treatment on the microstructure and mechanical properties of AlCoCrFeNi2.1 alloy
Source abstract
Abstract
Cyclic deep cryogenic treatment (CDCT) is essential for enhancing the microstructure and mechanical properties of high-entropy alloys (HEAs). This study investigated the effects of 0, 1, 2, and 4 cycles of 12-h CDCT on the microstructure and properties of the AlCoCrFeNi 2.1 alloy. The results indicate that the AlCoCrFeNi 2.1 alloy consists of body-centered cubic (BCC) and face-centered cubic (FCC) phases. The increase in the number of CDCT cycles promotes the formation of the FCC phase. After two cycles of CDCT, the optimal tensile properties were achieved, with a yield strength (YS) of 1186.5 ± 6.3 MPa, ultimate tensile strength (UTS) of 1478.5 ± 8.7 MPa, and elongation (EL) of 15.01 ± 0.7%. Based on the mechanisms elucidated in this study, key insights are provided for selecting cryogenic post-processing techniques for laser powder bed fusion (LPBF) high-entropy alloys
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metal Alloys Wear and Properties · High Entropy Alloys Studies · Metallurgy and Material Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (7)
Show source-provided references
1. Nanostructured high-entropy alloys with multiple principal elements: novel alloy design concepts and outcomes10.1002/adem.200300567 ↗
2. The influence of cooling rate, chromium and silicon addition on the structure and properties of AlCoCrFeNiSi high entropy alloys10.1016/j.jmmm.2020.166492 ↗
3. Cryogenic treatment of CoCrFeMnNi(NbC) high-entropy alloys10.1007/s11665-019-04439-8 ↗
4. Synergistic strengthening via high-density stacking faults and dislocations in cryo-processed l12-strengthened high-entropy alloys10.1016/j.matchar.2025.115931 ↗
5. Alleviating mechanical-property anisotropy of additively manufactured dual-phase AlCoCrFeNi2.1 eutectic high entropy alloys by cyclic deep cryogenic treatment10.1016/j.matdes.2025.114586 ↗
6. Effect of deep cryogenic treatment on microstructure and mechanical properties of Fe50Mn30Co10Cr10 high entropy alloy fabricated by laser metal deposition10.1016/j.jallcom.2024.176190 ↗
7. Microstructure and mechanical performance study of CrMnFeCoNi high-entropy alloys after cryogenic treatment10.1016/j.msea.2025.148663 ↗