Hybrid ceramic particle reinforced 6061 and 5083 Al composite powders were prepared by the combination of twin rolling and stone mill crushing process, followed by consolidating processes of cold compaction, degassing and hot extrusion. The composite bar consists of lamellar structure of ceramic particle rich area and matrix area, in which the hybrid was decomposed into each TiC of about and particles of about in diameter. It also found that fine precipitates of about 30 nm were embedded in the matrix, which have grains of about 3 . Higher UTS was measured at the 5083 composite bar compared to the conventionally fabricated composite, due to again refinement effect by the rapid solidification. No particle was shown to form in the interface between the matrix and reinforcement, whereas carbon was diffused into the matrix.

일방향 응고한 AI-CuAI2공정 복합재료의 미세조직에 미치는 응고조건과 진동의 영향에 대해서 조사하였다. 진동하에서 성장속도(R) 변화에 따라 일방향응고 시켰을때 열구배(G)는 32˚C/cm와 35˚C/cm를 유지했다. 공정조직은 성장조건(G/R)에 따라 변화되었다. 조직미세화는 진동의 영향도 컸지만 G/R의 영향이 더 크다는 것을 알 수 있었다. 층상 간격은 λ2 =상수 라는 관계에 따라 성장속도와 더불어 변화 되었다.