Cutting Behavior of Al0.6CoCrFeNi High Entropy Alloy

Abstract

There is an increased interest in high entropy alloys as a result of the special possibilities of improving the mechanical, physical or chemical characteristics resulting from metallic matrices made of different chemical elements added in equimolar proportions. The next step in developing new alloys is to determine the cutting conditions to optimize manufacturing prescriptions. This article presents a series of tests performed to estimate the machining behavior of the Al0.6CoCrFeNi high entropy alloy. The effects of temperature during machining, wear effects on the cutting tool, evolution of the hardness on the processed areas, cutting force components and resultant cutting force for high entropy alloy (HEA) in comparison with 304 stainless steel, scrap aspect and machined surface quality were analyzed to have an image of the HEA machinability. In terms of cutting forces, the behavior of the HEA was found to be about 59% better than that of stainless steel. XRD analysis demonstrated that the patterns are very similar for as-cast and machined surfaces. The wear effects that appear on the cutting edge faces for the tool made of rapid steel compared to carbide during HEA machining led to the conclusion that physical vapor deposition (PVD)-coated carbide inserts are suitable for the cutting of HEAs.

Bio-Functionalization of a Novel Biocompatible High Entropy Alloy Used For Bone Implants

“…Moreover, the Zn addition decreases the elastic modulus of HAP coatings, a positive result, which can reveal that the Zn based HAP coatings is proper for biomedical applications. The challenge is to obtain materials with the elastic modulus close to the value of human bones [1,5,8,9,18,32]. In Table 3, the H 3 /E 2 ratio is also calculated, which is related to the resistance to plastic deformation, a parameter sensitive to corrosion properties of the materials [50].…”

“…Currently, there is a wide variety of high entropy alloys that can be used in different fields, due to their special and specific properties, including industrial, aeronautical, military, medical applications and so on [7][8][9]. The high entropy alloys from the FeMoTaTiZr alloying system can be used for the manufacture of medical devices, human prosthesis, and implants.…”

Mechanically Alloyed CoCrFeNiMo0.85 High-Entropy Alloy for Corrosion Resistance Coatings

“…The possibility of composition designing according to a targeted application was an appealing property of these types of alloys [ 1 , 2 , 3 ]. The studies were conducted on different compositions, mechanical properties, thermal resistance and microstructures [ 4 , 5 , 6 ].…”

Surface Roughness Analysis and Prediction with an Artificial Neural Network Model for Dry Milling of Co–Cr Biomedical Alloys

“…The use of nickel-free CoCr alloys is recommended for permanent implantable medical devices, as Ni can affect cell viability and proliferation, examples of which include wrought Co–20Cr–15W–10Ni and Co–Ni–Cr–Mo–W–Fe [ 1 , 12 , 13 ]. Cast alloys are characterized by a rough dendritic structure.…”