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(english) In hypoeutectoid steel, the temperature at which transformation of ferrite into austenite is completed upon heating.
(english) The temperature at which austenite begins to form on heating.
(english) Heating hot rolled ferrous sheet in an open furnace to a temperature within the transformation range and then cooling in air, in order to soften the metal. The formation of a bluish oxide on the surface is incidental.
(english) (1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. (2) In grinding getting the work hot enough to cause discoloration or to change the microstructure by tempering or hardening.
(Concrete Engineering) To alter composition or physical state by heating to a specific temperature for a specific length of time.