Materials and Processes

Mechanical Properties

• Ductility• Toughness• Strength• Stiffness

Material Properties

• Hardness– Brinell– Rocwell– Vickers

Rotating Bending Test

Mechanical Properties• Endurance limit - Fatigue strength

Endurance Limit – Fatigue Strength

Machinability

• An index that refers to the ease with which a metal can be machined to an acceptable surface finish.

• Good machinability require little power to cut, can be cut quickly, easily obtain a good finish, and do not wear the tooling much; such materials are said to be free machining.

Machinability Index

Polycrystalline Metals and Grains

Work Hardening

Recrystallization

Process Heat Treatment

Heat Treatment for Strength

Induction Hardening

Carburizing