Abstract
The effect of service environment on mechanical properties of recrystallizedFeCoNiCrAl0.1 alloy when tested in vacuum, air and gaseous hydrogen was studied in this paper. The results show that the elongations of FeCoNiCrAl0.1 alloy tested in air and gaseous hydrogen are higher than that tested in vacuum. But the tensile strengths of the alloy tested in air and gaseous hydrogen decrease appreciably comparing with that tested in vacuum. With the increase of the hydrogen pressure in the environment, the elongation of the alloy first increases quickly, but the increasing ratio of the elongation decreases obviously when the hydrogen pressure is more than 10 kPa, and the elongation gradually tends to a constant. The fracture modes of FeCoNiCrAl0.1 alloy are all ductile fractures when tested in vacuum, air and gaseous hydrogen, and there are some micro-voids on the fracture surfaces.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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1. Appendix 1;High-Entropy Alloys;2019
2. References;High-Entropy Alloys;2019