Adiabatic shear bands as predictors of strain rate in high speed machining of ramax-2
Creators
- 1. NWFP Univ. of Engineering and Technology, Peshawar (Pakistan). Dept. of Mechanical Engineering
- 2. McMaster Univ., Hamilton (Canada). Dept. of Mechanical Engineering
Description
Shear band formation was studied in the chips obtained by turning of stainless steel- Ramax-2 (AISI 420F). The machining was performed on a CNC lathe using a PVD (Physical Vapor Deposition) cutting tool insert. The cutting speeds ranged from 50 m/ min to 250 m/min. Dry cutting conditions were employed. At cutting speeds higher than 30 m/mill, the chip did not remain intact with the workpiece using quick stop device. It was difficult to get the chip root SEM (Scanning Electron Microscope) micrographs at further higher speeds. Therefore, the width of the shear bands was used as the predictor of the strain rates involved at various cutting speeds. The results showed that the strain rates are quite in agreement with the amount of strain rate found during machining of such types of stainless steels. It was also observed that shear band density increased with increasing cutting speed. (author)
Additional details
Publishing Information
- Journal Title
- Mehran University Research Journal of Engineering and Technology
- Journal Volume
- 27
- Journal Issue
- 1
- Journal Page Range
- p. 63-72
- ISSN
- 0254-7821
INIS
- Country of Publication
- Pakistan
- Country of Input or Organization
- Pakistan
- INIS RN
- 39021200
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BANDING TECHNIQUES; CUTTING MACHINES; DEFORMATION; SCANNING ELECTRON MICROSCOPY; STAINLESS STEELS; STRAIN RATE; YIELD STRENGTH
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CYTOLOGICAL TECHNIQUES; ELECTRON MICROSCOPY; EQUIPMENT; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MICROSCOPY; MINING EQUIPMENT; STEELS; TRANSITION ELEMENT ALLOYS