High Strain Fatigue in a Ni(Cr)-TaC Fibrous Eutectic

MF Henry; NS Stoloff

doi:10.1520/STP33173S

SYMPOSIA PAPER Published: 01 January 1975

STP33173S

High Strain Fatigue in a Ni(Cr)-TaC Fibrous Eutectic

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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.

Author Information

Henry, MF

General Electric Corporate Research and Development Center, Schenectady, N. Y.

Stoloff, NS

Rensselaer Polytechnic Institute, Troy, N. Y.

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Details

Developed by Committee: E08

Pages: 189–209

DOI: 10.1520/STP33173S

ISBN-EB: 978-0-8031-4652-5

ISBN-13: 978-0-8031-0346-7

High Strain Fatigue in a Ni(Cr)-TaC Fibrous Eutectic

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