과제정보
연구 과제 주관 기관 : 포항종합제철(주)
열처리공학회지 (Journal of the Korean Society for Heat Treatment)
- 제12권2호
- /
- Pages.99-107
- /
- 1999
- /
- 1225-1070(pISSN)
- /
- 2508-4046(eISSN)
B첨가 고탄소강의 흑연화에 미치는 냉간압연의 영향
The Effects of Cold Rolling on the Graphitization in Boron Addition High Carbon Steel
-
우기도
(전북대하교 신소재공학부.신소재개발연구소)
;
- 박영구 (전북대하교 신소재공학부.신소재개발연구소) ;
- 류재화 (포항종합제철 기술연구소) ;
-
이창희
(한국 원자력 연구소)
;
- 나종필 (MK 전자(주))
-
Woo, K.D.
(Faculty of Advanced Materials Engineering & Research Institute of Advanced Materials Development, Chonbuk National University)
;
- Park, Y.K. (Faculty of Advanced Materials Engineering & Research Institute of Advanced Materials Development, Chonbuk National University) ;
- Ryu, J.H. (POSCO Technical Lab.) ;
-
Lee, C.H.
(Korea Atomic Energy Research Institute)
;
- Ra, J.P. (MK Electron Co., LTD.)
- 발행 : 1999.06.30
초록
The graphitization is affected by the addition of small amount of the elements(such as Si, Al, Ni, B, Cr and Mn etc.) and the pre-treatment(such as cold rolling). Boron is well known element to accelerate the graphitization of cementite in high carbon steels. Also, cold rolling is known to accelerate the graphitization. But the graphitization nucleation mechanism by cold rolling is few reported. Therefore the effect of cold rolling in Fe-0.5%C-1.0%Si-0.47%Mn-0.005%B steel on the graphitization is investigated quantitatively using hardness test, optical microscope and scanning electron microscope, neutron induced microscopic radiography. The nucleation of graphite in cold-rolled Fe-0.5%C-1.0%Si-0.47%Mn-0.005%B steel is formed at void which is formed at pearlite/pearlite boundary by cold rolling. But the effect of cold rolling on graphitization in boron addition steel is more effective than that of no boron addition steel due to segregation of BN at void in boron addition steel.