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가압연속주조법에 의한 SiCp / Al 합금기 복합재료의 조직 및 특성
이학주,홍준표 ( Hak Joo Lee,Chun Pyo Hong ) 한국주조공학회 1991 한국주조공학회지 Vol.11 No.1
N/A Microstructure and characteristics of the SiCp/Al-4.5wt%Cu-1wt%Mg composites fabricated by the combination of the compocasting and the pressurized continuous casting process, which is one of the processes to decrease the limitations of the size, and shops of the products, are investigated. The main results are as follows: 1) the SiCp /Al alloy matrix composites can be made continuously 2) as the amount of SiCp addition increases; (1) the degree of directional solidification of matrix structure decreases, and that of SiCp dispersion improves, (2) wear resistance improves, and especially these composites show the excellent wear resistance under the high sliding speed and high final load condition, (3) wear mechanism of these composites is changed from adhesive wear into abrasive wear, and the tendency of that becomes outstanding with increasing sliding speed.
Rheo-compocasing 법에 의한 SiCp / Al 합금기 복합재료의 제조 및 마모특성
이학주,곽현만,홍준표 ( Hak Joo Lee,Hyun Man Kwak,Chun Pyo Hong ) 한국주조공학회 1991 한국주조공학회지 Vol.11 No.2
N/A Microstructure and wear characteristics of SiCp /Al - 6.5wt%Si - 1.7wt%Mg composite materials fabricated by rheo-compocast and hot press were investigated in this study. The results obtained are as follows : 1) It was possible to fabricate favorable composite materials containing SiCp which is up to 26 vol% by rheo-compocast and hot press. 2) Si and Al₂Si₄O_(10) were formed on the surface of SiC particles, and fairly good bonding condition was obtained on the interface between SiCp and matrix alloy. 3) Wear mechanism was transformed into adhesion, oxidation and fusion on the matrix alloy as wear rate increases, but in the composite material, the abrasive mechanism was shown not depending on the wear rate. 4) Wear resistance was improved as the amount of SiCp increases, however, no remarkable change in wear resistance was found above 8vol% of SiCp.
연속복합주조법에 의한 Aluminum/Stainless Steel Fiber 강화복합재료의 제조에 관한 연구
이상목,홍준표,이학주 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.3
A new fabrication technique, $quot;Continuous Compo-Casting Process(CCC Process)$quot; has been developed to produce the FRM(Fiber Reinforced Metals) composites. In the present study, the stainless steel fiber and aluminum matrix were selected because of their mutual passible wettability and good handling conditions. The aims of this studiy are to establish a new process and to optimize the main fabrication parameters. Microstructural observations and mechanical tests were conducted on the composites produced by the CCC process. Continuous composite materials can be produced with a simple experimental apparatus and at low cost. The geometry of the composites can be modified easily by changing the mold geometry. It may be concluded that the CCC process will have a wide application in producing metal matrix composites for structural purposes.