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ASTM Selected Technical Papers
Fatigue of Composite Materials
By
JR Hancock
JR Hancock
1
symposium chairman
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ISBN-10:
0-8031-0346-8
ISBN:
978-0-8031-0346-7
No. of Pages:
342
Publisher:
ASTM International
Publication date:
1975

The eutectic Ni(Cr)-TaC has been directionally solidified to yield a fibrous composite. The material was studied in strain-limited low-cycle fatigue at room temperature and 1000°C. The eutectic with brittle fibers and a ductile matrix was found to obey the Coffin-Manson law at both temperatures. The hysteresis behavior is explained and related to tensile deformation. Surface studies of highly polished cyclic-bend specimens revealed the fatigue crack nucleation and early growth characteristics. The data are compared to conventional materials, and the fatigue resistance is found to be essentially equivalent.

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