Abstract
This paper presents tool wear study when a machinability test was applied using milling on Super Austenitic Stainless Steel AL6XN alloy. Eight milling trials were performed under two cutting speeds, 100 m/min and 150 m/min, combined with two feed rates at 0.1mm/tooth and 0.15 mm/tooth and two depth of cuts at 2 mm and 3 mm. An Alicona 3D optical surface profilometer was used to scan cutting inserts flank and rake face areas for wear. Readings such as maximum and minimum deviations were extracted and used to analyse the outcomes. Results showed various types of wear were generated on the tool rake and flank faces. The common formed wear was the crater wear. The formation of the build-up edge was observed on the rake face of the cutting tool.
Highlights
Super austenitic stainless steel (SASS) alloy-AL6XN on referred as AL6XN is a type of austenite stainless steel distinguishable by its high alloying contents
As AL6XN has been a classified material so far with limited research conducted on it, this paper aims to continue machining investigation on AL6XN in order to study and analyse the generated wear and surface topography of the cutting edge and Build-Up Edge (BUE) formation using Alicona Infinite Focus 3D optical profilometer
At a 150 m/min cutting speed, the BUE was formed on the rake face of the cutting insert used in trial 5
Summary
Super austenitic stainless steel (SASS) alloy-AL6XN on referred as AL6XN is a type of austenite stainless steel distinguishable by its high alloying contents. The presence of alloying elements such as chromium, nickel, molybdenum and nitrogen enhance the resistance of the alloy to the stress corrosion cracking (SCC), crevice and pitting corrosion. The alloying elements render the alloy to be classified as a difficult to machine material. Machinability of a material is a criterion used to define the ease with which the material can be machined. The machinability process is sensitive to the properties of the machined material, such as high level of strength, ductility, work hardening and decreased thermal conductivity [5]-[9]. Machinability studies have been conducted by researchers on different Austenitic Stainless Steel (ASS) grades
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