국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Tensile Material Properties and High Temperature Tensile Strength of SiC Fiber Reinforced Pure Aluminum Composites
저자	Yasushi Sofue, Fenghua Zhou, Akinori Ogawa
Keyword	Composite material; high-temperature strength; high-temperature experimental technique; material testing, tensile properties
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001419.pdf?id=NALTR0001419
보고서번호	NAL TR-1419
발행년도	2001.01
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	find broad applications not only in the aerospace industry, but also in other engineering fields. In this paper, the tensile properties of SiC fiber reinforced pure aluminum, which has potential applications in power transmission systems, were experimentally evaluated in the temperature range from RT to 515좧. Hi-NicalonTM low-oxygen silicon carbide fibers recently developed by Nippon Carbon were used to unidirectionally reinforce 99.9% pure aluminum (A1090). These specimens had a rectangular or dumbbell shape. The rectangular specimens were used for room temperature testing, in which SiC fibers were aligned in 0?Or 90?Directions to the tensile loading. The dumbbell-shaped specimens, reinforced in the 0?Direction, were used for high-temperature testing. Prior to the high-temperature experiments, a 3D FEM analysis was performed to ensure that no unwanted stress concentration existed in the dumbbell specimens. The mechanical properties of the material, I.e. Young? modulus, Poisson? ratio, strength and elongation, were measured and summarized in figures or tables. These data were compared with published data for Nicalon fiber reinforced aluminum, and it was found that the present Hi-Nicalon SiC/Al material is better reinforced in the fiber direction. On the other hand, the transverse strength of this material is lower due to matrix (99.9% pure Al) yielding. In the experimental temperature range, strength of the material decreases linearly with the increase in temperature.