Affordable FeCrNiMnCu high entropy alloys with excellent comprehensive tensile properties

Microstructure, Mechanical Properties, and Oxidation Behavior of AlxCr0.4CuFe0.4MnNi High Entropy Alloys

“…Nevertheless, the following SEM observation clearly shows that there actually exist two kinds of FCC phases with close lattice constants. This phenomenon may be caused by the compositional segregation and has been discovered in some researches . When x = 0.2, a weak (110) BCC peak already commences at about 2 θ = 43.5°.…”

“…It is also noticed that when x = 0.1 to x = 0.2, the HEAs have elongation over 30% as well as ultimate tensile strength over 600 MPa, which are outstanding among HEAs. We can further evaluate the tensile properties by comparing them with those of other HEAs . The ultimate tensile strength (UTS), elongation (EL), and strength‐ductility balance (UTS × EL) for current and other HEAs are depicted in Figure c.…”

“…These HEAs are much cheaper than FeCoCrNiX (X = Mn, Al, Cu, Ti, etc. ), and exhibit comprehensive tensile properties, for example, the HEA with the content of Mn of x = 1 possesses the yield strength, ultimate tensile strength, and elongation of 439 MPa, 884 Mpa, and 23.4%, respectively . To further extend their application fields, in this work, we developed a new kind of low‐cost HEAs by adding the Al into Fe 0.4 Cr 0.4 NiMnCu HEAs.…”

Creep, fatigue, and fracture behavior of high-entropy alloys

“…77 Oxides of Cr and Mn inside dimples, again, are observed in the as-cast, multiphase Fe 0.4 Cr 0.4 NiMn x Cu (0 # x # 1.4) HEAs consisting of fcc and bcc phases, at which microvoids are nucleated. 78 A mixed fracture feature with regions of dimpled and faceted appearance is present in a fractured specimen for a direct-laser-fabricated Al 0.6 CoCrFeNi HEA, in which voids and cracks are formed at the fcc/bcc interface. 79 With the addition of Al, a homogenized AlCoCrFeNi HEA exhibits a transgranular fracture.…”

Evaluation of microstructural and corrosion resistance of as-cast Cu45Mn25Al15Fe5Cr5Ni5 high entropy alloy

“…It was shown that the microstructure evolved from fcc to bcc with increasing the content of Al. Rao et al [21], investigated the influence of Mn content on the microstructure formation of Fe 0.4 Cr 0.4 NiMn x Cu.…”