Study on the Formability, Microstructures and Mechanical Properties of AlCrCuFeNix High-Entropy Alloys Prepared by Selective Laser Melting

dc.creatorLuo, Shuncun
dc.creatorWang, Zemin
dc.creatorZeng, Xiaoyan
dc.date.accessioned2021-11-18T00:53:04Z
dc.date.available2021-11-18T00:53:04Z
dc.date.issued2019
dc.description.abstractBecause of easy cracking caused by rapid solidification, fabricating dual-phase high-entropy alloys (DP-HEAs) through selective laser melting (SLM) has hardly been achieved. Here we reasonably design new DP-HEAs specific to SLM according to solid solutions formation criterion and HEA definition. Results show that Ni addition favors the formation of face-centered cubic (FCC) phase and facilitates the transition from columnar to equiaxed grains, thus the formability of AlCrCuFeNix (2.0 ≤ x ≤ 3.0) HEAs is improved. The SLMed AlCrCuFeNi3.0 HEA exhibits remarkably heterogeneous microstructures, such as modulated nanoscale lamellar or cellular dual-phase structures, and possesses the best combination of the ultimate tensile strength (~ 957 MPa) and ductility (~ 14.3 %). Also, it is discovered that high densities of Cr-enriched nano-precipitates are embedded in the ordered body-centered cubic (B2) phase. Finally, the underlying strengthening mechanisms are analyzed for the SLMed AlCrCuFeNi3.0 HEA.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90379
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17300
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2019 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjecthigh entropy alloyen_US
dc.subjectselective laser meltingen_US
dc.subjectmicrostructureen_US
dc.subjectstrengthen_US
dc.titleStudy on the Formability, Microstructures and Mechanical Properties of AlCrCuFeNix High-Entropy Alloys Prepared by Selective Laser Meltingen_US
dc.typeConference paperen_US
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