Fabrication and Wear Property Evaluation for FeCrSi/AC8A Composite by Low-pressure Infiltration

J. Ocean Eng. Technol. 2008;22(5):106-111.

Song Tae-Hoon,Lee Hyun-Jun,Choi Yong-Bum,Kim Sung-Jin,Park Won-Jo

Graduate school of Mechanical and Precision Engineering Gyeongsang National University,Graduate school of Mechanical and Precision Engineering Gyeongsang National University,Department of Engineering System Hiroshima University,Jeju Campus of Korea Polyt

저압함침법에 의한 FeCrSi/AC8A 복합재료의 제조와 마모특성 평가

송태훈,이현준,최용범,김성진,박원조

경상대학교 대학원 정말기계공학과,경상대학교 대학원 정말기계공학과,히로시마대학 기계시스템공학과,한국폴라텍 I 대학,경상대학교 기계항공공학부

Keywords: Low-Pressure casting, Preform, Molten aluminum alloy

핵심용어: 저압주조, 프리폼, 용융알루미늄합금

Abstract

In this paper, study about property evaluation for the metal matrix composites fabricated by low pressure infiltration process. Aluminum alloy composite which is reinforced by Metal fiber preform was fabricated by low pressure casting process. Infiltration condition was changed the pressure infiltration time of 1 sec, 2 sec and 5 sec under a constant pressure of 0.4 MPa. The molten alloy completely infiltrated the FeCrSi metal perform regardless of the increase in the pressure acceleration time. The the porosity in the FeCrSi/AC8A composite was investigated. The porosity was reduced as the pressure acceleration time as shorter. The FeCrSi/AC8A composite was investigated the wear test for to know the relationship between Porosity and wear resistance. FeCrSi/AC8A composite at pressure acceleration time of 1sec is shown excellent wear resistance.