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용탄단조법에 의한 AC4A/SiCw 복합재료 제조에 관한 연구 (3) -기계적 특성-
문경철,이준희,윤의박 ( Kyung Cheol Moon,Jun Hee Lee,Eui Pak Yoon ) 한국열처리공학회 1994 熱處理工學會誌 Vol.7 No.3
This was studied about mechanical characteristic of AC4A/SiCw 10-30% reinforced composites. Tensile strength of pressed base metal(base metal) with SiCw preform was higher than without pressed base metal(AC4A) If SiCw whisker volume fraction was increased, tensile strength at room temperature was increased. And tensile strength of SiCw 30% was about 35㎏/㎟. Tensile strength of SiCw 30% 400℃ at same time aging was the most excellence, about 40㎏/㎟ The fracture energy value of composite material at three point bending test was higher than AC4A. Dislocation at matrix of composite material was evenly distributed. But dislocation around whisker of composite material was more existed than matrix. The reasom was thought of pile-up around whisker.