발간논문

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Vol.16, No.5, 420 ~ 428, 1978
Title
The Cryogenic Mechanical Properties and the intergranular Brittleness in Fe - 12 % Mn - ( 0.2% Ti ) Ferritic Alloy System
황선근 S . K . Hwang
Abstract
An investigation toward a nickel-free ferritic cryogenic Fe-12%Mn-(0.2%Ti) alloy steel was made, and the metallurgical processing techniques which improve the cryogenic mechanical properties are summarized. Retained austenite produced by a heat treatment within the two phase (α+γ) region was found to be effective in suppressing cryogenic brittleness. The inherent intergranular weakness of this alloy was also studied by employing Auger electron spectroscopy and other techniques. The cause of the intergranular brittleness is discussed and a method for its prevention is suggested.
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