[논문] : 연속주조된 Cu-Ni-Si계 합금의 특성평가
분야
공학 > 금속공학
저자
이정일 ( Jung Il Lee ) , 조훈 ( Hoon Cho )
발행기관
한국열처리공학회
간행물정보
열처리공학회지 2012년, 제25권 제6호, 292~298페이지(총7페이지)
파일형식
16701444.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    In this study Cu-2.5at%Ni-1at%Si alloys were fabricated by horizontal continuous casting system to improve the electrical conductivity and mechanical properties of Cu-Ni-Si alloy. Withdrawing speed was changed with 50 100 150 and 200 mm/min for the optimum manufacturing condition. Microstructure was observed using OM FE-SEM and TEM. Electrical conductivity was measured by 4-point probe method and mechanical proper-ties were tested. A horizontal continuous cast thin slab had sound macro and micro structures with partly crystal-lized structures. Electrical resistivity decreased with increasing annealing temperature from 250 to 850℃ with increasing annealing temperature the maximum hardness and tensile strength were Hv 130 610 MPa at 550℃ respectively. With changing withdrawing speed from 50 to 150mm/min hardness tensile strength yield strength and elongation were Hv 60-55 210-230 MPa 65-75 MPa and 40-50% respectively. (Received August 9, 2012; Revised September 24, 2012; Accepted October 7, 2012)
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