Comment on your observations regarding the hardness variatio

Comment on your observations regarding the hardness variations during machining and chip formation shown in Figure 1.

(a) The maximum temperature, both on flank and rake faces, are at a location approximately halfway along the tool-workpiece contact surfaces. (b) Temperatures and their gradients can be very high. (c) Cutting speed has a major effect on temperature. (d) Chip temperatures are much higher than workpiece temperatures.