한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 2008년도 추계학술대회 논문집
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- Pages.138-141
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- 2008
고강도강선의 신선 가공할 및 열처리 조건이 기계적 성질에 미치는 영향
The Effects of Drawing Strain and Annealing Condition on Mechanical Properties of High Strength Steel Wires
- Lee, J.W. (School of Advanced Materials Engineering, Kookmin University) ;
- Lee, Y.S. (School of Advanced Mechanical and Automotive Engineering, Kookmin University) ;
- Park, K.T. (Division of Advanced Materials Science and Engineering, Hanbat University) ;
- Nam, W.J. (School of Advanced Materials Engineering, Kookmin University)
- 발행 : 2008.10.09
초록
The effects of annealing temperature and time on mechanical properties and microstructures were investigated in cold drawn pearlitic steel wires. During annealing, the increment of the tensile strength at low temperatures found to be due to age hardening, while the decrease in the tensile strength at high temperatures was attributed to age softening, involving the spheroidization of lamellar cementite and recovery of lamellar ferrite. Since tensile strength and the occurrence of the delamination would be closely related to the dissolution of cementite, the lower annealing temperature and the increase of drawing strain caused the higher tensile strength and the easier occurrence of the delamination in cold drawn pearlitic steel wires.