Definition of austenite in English:



  • A solid solution of carbon in a nonmagnetic form of iron, stable at high temperatures. It is a constituent of some forms of steel.

    ‘Titanium can reduce carbon in austenite by forming very stable carbides.’
    • ‘This level of carbon also decreases the solubility of the microalloying constituents in austenite.’
    • ‘When the steel is heated well above the upper critical temperature large austenite crystals form.’
    • ‘This high temperature treatment produces uniform austenite of rather large grain size.’
    • ‘This implies that after hardening these steels practically always contain some residual austenite.’
    • ‘This soft retained austenite can accommodate impact stresses better than the harder constituents.’
    • ‘At higher temperatures, the structure switches to austenite.’
    • ‘With some steels, the enriched austenite does not precipitate carbide, but remains as a film of retained austenite.’
    • ‘Aluminum is widely used as a deoxidizer and was the first element used to control austenite grain growth during reheating.’
    • ‘Premature austenite decomposition has been found to be detrimental to mechanical properties.’



/ˈôstəˌnīt/ /ˈɔstəˌnaɪt/


Early 20th century from the name of Sir William Roberts-Austen (1843–1902), English metallurgist, + -ite.