SYMPOSIA PAPER Published: 01 January 1987
STP25658S

The Effects of Temperature and Strain Rate on the Properties of (Fe,Ni) V LRO Alloys

Source

Tension tests with two distinctly different strain rates, 2.8 × 10−5 and 2.8 × 100 s−1, have been performed on the (Fe,Ni)3V long-range ordered (LRO) alloys in aged and unaged condition between 20 and 750°C. Tensile results as a function of test temperature indicate that the LRO alloys have good high-temperature strength. The yield strength of the ordered alloys increases with increasing test temperature, rather than decreasing as in conventional alloys. Long-term aging at 600°C has little or no effect on the elevated temperature tensile properties, and tends to reduce the sensitivity of aged materials to strain rate. The deformation mechanisms are changing as a function of test temperature, while there is a minor change in fracture characteristics over test temperature range. Oxidation features show the iron-base LRO alloys have limited oxidation resistance above 600°C.

Author Information

Lin, HT
Auburn University, Auburn, AL
Wilcox, RC
Auburn University, Auburn, AL
Chin, BA
Auburn University, Auburn, AL
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Details
Developed by Committee: E10
Pages: 310–318
DOI: 10.1520/STP25658S
ISBN-EB: 978-0-8031-5017-1
ISBN-13: 978-0-8031-0963-6