Role of Phosphorous, Nitrogen and Coldwork on Machinability of Carbon And Alloy Steels
Phosphorous and Nitrogen affect ductility; Cold work further activates their effect.
-
-
Martensite- Five Facts
1) Martensite is the hardest and most brittle microstructure obtainable in a given steel.
2) Martensite hardness of the steel is a function of the carbon content in that steel.
3) Martensite results from cooling from austenitic temperatures rapidly by pulling the heat out using a liquid quenchant before pearlite can form.
4) As quenched Martensitic structures are too brittle for economic use-they must be tempered.
5) Reheating as quenched Martensite to a temperature just below the AC1 results in the best combinations of strength and toughness. -
5 Reasons To Anneal Steel
Five reasons to anneal steel include:To alter the grain structure;
To develop formability;
To improve machinability;
To modify mechanical properties;
To relieve residual stresses.