Effect of Service Environment on Mechanical Properties of FeCoNiCrAl_0.1 Alloy

Abstract:

The effect of service environment on mechanical properties of recrystallizedFeCoNiCrAl_0.1 alloy when tested in vacuum, air and gaseous hydrogen was studied in this paper. The results show that the elongations of FeCoNiCrAl_0.1 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 FeCoNiCrAl_0.1 alloy are all ductile fractures when tested in vacuum, air and gaseous hydrogen, and there are some micro-voids on the fracture surfaces.

• Periodical: Materials Science Forum (Volume 913)
• Pages: 674-681
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.913.674
• Online since: February 2018
• Authors: Ye Xin Chen*, Xiao Ni Qiang
• Keywords: FeCoNiCrAl_0.1 Alloy, High Entropy Alloy, Hydrogen, Service Environment

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