Effect of casting modification materials on cutting forces of an Al12Si alloy used in aircraft technology

Abstract

In this study, the effect of modification Al-12Si (Etial 140) casting alloy with Al10Sr, CuSn5, and Al10Sr + CuSn5 master alloys has been investigated with respect to the cutting forces. In order to characterize the morphology of materials used in this study, metallography, hardness, density tests, and chemical analysis were performed. An optical microscope was used to examine the microstructure of the samples. Machinability tests were performed with the turning method by using a titanium diboride-coated cementite carbide cutting tool. All experiments were carried out under dry machining conditions with three different cutting speeds and feed rates with a constant cut depth. After the turning test, scanning electron microscope (SEM) images were used to examine the build-up edge (BUE) formation on the cutting tool. It was determined that the modification process has a positive effect on increasing the density and hardness. According to the results, it was observed that cutting (Fc), feed (Ff), and tangential (Fr) forces decreased for all material groups with increasing cutting speed V. Furthermore, Fc, Ff, and Fr forces increased for all material groups with increasing feed rate f. Finally, the highest cutting forces were observed on the Etial 140 c + Al10Sr master alloy.

Effects of Niobium Carbide Additions on Ni-Based Superalloys: A Study on Microstructures and Cutting-Wear Characteristics through Plasma-Transferred-Arc-Assisted Deposition

“…To determine the effects of the NbC content on the wear resistance of the NCR-7 superalloy, this study conducted dry-cutting tests by shaping the composite cladding specimens into turning inserts-which were used as cutting tools-and using an ADC12 die-casting aluminum alloy as the workpiece. ADC12 alloys contain a considerable amount of Si, which can cause considerable wear and a built-up edge (BUE) [24], creating a severe wear environment. Accordingly, the study primarily explored the effects of NbC addition on the solidification structure, hardness, and phase composition of the composite cladding.…”