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Metal
| Question | Answer |
|---|---|
| Heat Treatment | a controlled process used to change the microstructure of metals and alloys by controlled heating and cooling at various rates which results in a “forced” transformation. |
| Factors that effect heat treatment effectiveness | 1 Metal & Alloy Additions 2 Microstructure 3 Prior Hot and Cold Work Treatments 4 Rate of Heating and Cooling |
| Stress relief/process annealing | heat treating process where you heat the steel to a temperature below the critical range to relieve the residual stresses resulting from hot rolling, welding, shearing, or gas cutting. It does not change the material's structure |
| Annealing | a heat treatment process used mostly to increase ductility and reduce the hardness of a material |
| Quenching | It is the rapid cooling of a heat treated metal |
| Normalizing | can be done immediately after quenching, used to remove the stresses due to welding, cold working or severe quenching. It provides a faster cooling rate than annealing |
| Tempering | re-heating to moderate temperatures with slow cooling, used to increase ductility machinability and impact strength |
| Time temperature transformation diagrams | show the microstructure of metal at specific temperatures for specific amounts of time, every metal has their own because the type of metal and alloy additions effect how the microstructure will change with heat |
| Magnetism | the ability of matter to attract other matter to itself |
Created by:
Akinsman
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