Mechanical Properties with Aging Time in High Nitrogen Steel for Transmission Line

가공송전선용 고질소강의 시효시간에 따른 기계적 특성의 변화

  • Published : 1999.07.19

Abstract

In order to study the mechanical properties of high nitoren steel with ageing time, hardness, tensile stress several basic properties of Fe-Mn-Cr-Ni-N steel have been studied. With increasing partial pressure of nitrogen and ageing time to 10h, hardness and tensile stress are increased, but decreased beyond 10h because of over ageing. It is considered that the main factor related with mechnical properties is carbide precipitate, $M_7C_3$ which is precipitated with ageing time in matrix and optimum ageing time is 10h in $60^{\circ}C$.

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