Martensite

The hard, needle-like phase formed when austenite is cooled fast enough to trap carbon in a distorted lattice. As-quenched martensite is very hard but brittle; tempering restores toughness.

More terms

Annealing · Austenite · Bainite · Carbon equivalent (CEV) · Carburizing · Case hardening · Charpy impact test · Cold drawn · Decarburization · Elongation (A) · ESR (electroslag remelting) · Ferrite