Thermal environment effects on strength and impact properties of boron-aluminum compositesA systematic study was conducted regarding the degradation of fracture strength and impact energy in commercial B-Al composites in both static and cyclic thermal environments. The composites used in the study contained approximately 50 vol % boron fibers, unidirectionally aligned in either a 6061 Al or 1100 Al matrix. The tensile strengths of the composites after 3000 thermal cycles as a function of upper cycle temperature are presented in graphs. The temperature at which the strengths of 6061 Al matrix, B-Al composites were significantly degraded after 3000 cycles was noticeably higher than that for the 1100 Al matrix composites. Static heating at 420 C resulted in no significant strength degradation for the 6061 Al matrix composites. In the case of 1100 matrix composites, some degradation was observed at 420 C but markedly less than in the composites cycled to 420 C.
Document ID
19780049295
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Grimes, H. H. (NASA Lewis Research Center Cleveland, OH, United States)
Lad, R. A. (NASA Lewis Research Center Cleveland, Ohio, United States)
Maisel, J. E. (Cleveland State University Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1978
Subject Category
Composite Materials
Meeting Information
Meeting: International Conference on Composite Materials