CHARACTERISTIC TRANSITION TEMPERATURE OF BRITTLENESS OF LOW CARBON STEEL

Abstract

Abstract: On the basis of analysis of low carbon steel fracture macro-features and micro-processes at low temperature,the definition was given of the characteristic transition temperature of brittleness,T_(pm),and its physical meaning was expounded.Discussion was carried out of phys- ical characteristic of variation at T_(pm) in respect of the fracture toughness and property of crack arrest.In addition,research was made on the application of T_(pm),which can give infor- mation about the transition of the fracture toughness,the property of crack arrest and critical crack size,to estimation the brittleness of low carbon steel at low temperatures.

Key words: low carbon steel, low temperature brittleness, transition temperature, cleavage fracture fracture toughness, craek arrest

HUANG Zheng Institute of Physics,Academia Sinica,Beijing,ChinaYAO Mei Harbin Institute of Technology,Harbin,China Institute of Physics,Academia Sinica,Beijing 100080,China. CHARACTERISTIC TRANSITION TEMPERATURE OF BRITTLENESS OF LOW CARBON STEEL[J]. Acta Metallurgica Sinica (English Letters), 1990, 3(5): 332-337.

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CHARACTERISTIC TRANSITION TEMPERATURE OF BRITTLENESS OF LOW CARBON STEEL

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