Ferrous workpiece and method of manufacture

A method for manufacturing a ferrous rotational member having a friction surface, the method comprising:

• turning a first portion of the friction surface at a sufficient feed rate and a sufficient cutting depth to provide a first deformed layer on the first portion of the friction surface, wherein the first deformed layer comprises a first portion nanocrystallized microstructure;
• burnishing the first portion of the friction surface, after the turning, with a blunt tool to thicken the first portion nanocrystallized microstructure and to achieve a predetermined roughness;
• and
• nitrocarburizing the rotational member at a time and temperature sufficient for a diffusion of nitrogen atoms and carbon atoms through the thicken first portion nanocrystallized microstructure layer to form a hardened casing (c1) having thickness (t1);
• wherein the step of turning the first portion of the friction surface includes:
• rotating the friction surface about a rotational axis at a rate of 400 to 1000 revolution per minute (RPM), and
• removing a layer of material, with a cutting tool, from the first portion of the friction surface at a feed rate of 0.25 to 1.00 mm per revolution and a cutting depth of 0.2 to 0.8 mm.