발간논문

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Vol.20, No.1, 4 ~ 11, 1982
Title
The Mechanical Properties of Ausformed Martensite of Fe - 31% Ni Alloy
김학신Hak Shin Kim, 최종술Chong Sool Choi, 양훈영Hoon Yung Young
Abstract
Austenitid Fe-31%Ni alloy was prepared by induction melting, and then effects of prior deformation degree on the susformed martensite were investigated. The results obtained in this study are as follows. 1. Although iron-nickel alloy contains little carbon content, the ausformed martensite of this alloy showed remarkable increase ih tensile strength. 2. The strengthening of ausformed martensite in this alloy was considered to be attributed to a direct transfer of lattice defects such as tangled and sessile dislocation formed in deformed austenite to martensite phase during martensitic transformation, and about 40 pct of work-hardening in prior austenite was introduced to the strength of martensite phase in susformed martensitic structure. 3. The elongation of austenite was decreased with increasing deformation degree. However the elongation of susformed martensite showed a nearly constant value, independent of austenite deformation degree.
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