1. a solid solution of carbon in alpha-iron that is formed when steel is cooled so rapidly that the change from austenite to pearlite is suppressed; responsible for the hardness of quenched steel
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How To Use martensite In A Sentence

  • When cooled slowly below 670 degrees, martensite yields a heterogeneous mixture of pearlite and ferrite (or cementite, if the original mixture contained between 0.8 per cent. and two per cent. of carbon). Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86
  • Martensite is a supersaturated solid solution of carbon in iron which has a body-centred tetragonal structure, a distorted form of bcc iron.
  • At faster cooling rates, however, the microstructure almost fully transforms into martensite; increasing from approximately 15\% martensite, 85\% bainite / pearlite to 87\% martensite, 13\% bainite / pearlite at the highest cooling rate, based on a point-count method. Machine Design -
  • The decomposition and transformation of the retained austenite in bainite differ from that in martensite.
  • Martensite is usually considered to be a solid solution of cementite in beta iron. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel
  • Dual-phase steels, which feature hard martensite particles in a soft ductile ferrite matrix are also highly formable.
  • During this heat treatment all of the austenite transforms to martensite.
  • In the ordinary practice of hardening steels, the quenching is not so drastic, and the transformation of austenite back to ferrite and cementite is more or less completely effected, giving rise to certain transitory forms which are known as "martensite," "troostite," "sorbite," and finally, pearlite. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel
  • The ability of steel to form martensite on quenching is referred to as the hardenability.
  • Any retained austenite in the steel microstructure can transform under mechanical loading to martensite with a resulting increase in volume.
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