Manufacturing And Production Technology
When the temperature of a solid metal increases,

Both strength and ductility of the metal decreases
Strength of the metal decreases but ductility increases
Both strength and ductility of the metal increases
Strength of the metal increases but ductility decreases

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Manufacturing And Production Technology
In ultrasonic machining, the metal is removed by

Erosion caused by rapidly recurring spark discharges between the tool and work
Using abrasive slurry between the tool and work
Direct contact of tool with the work
Maintaining an electrolyte between the work and tool in a very small gap between the two

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