발간논문

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Vol.21, No.8, 707 ~ 713, 1983
Title
Structure - property Relationship in V - Steel
박화수 Hua Soo Park
Abstract
1.65V, 0.26C steel with addition of 1Ni was selected to investigate property variations according to the microstructural changes. Isothermal heat treatment was performed at 750℃ for 20 minutes and hardness was measured as Rc27. The structures were ferritic with two kinds of vanadium carbides i.e. fibrous carbide and particle-like one. The dual phase microstructures having the same Rockwell hardness were obtained by heating the vanadium steel at 900℃ for 10 minutes. The conventional quenching and tempering heat treatment was followed at 650℃ for 17 hours and the microstructures revealed Widmanstatten carbides and carbides precipitation at lath boundaries. The mechanical properties were determined from tensile tests and compared with the observed microstructures.
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