The Effect of Stoichiometry on Hydrogen Embrittlement of Ordered Ni₃Fe Intermetallics

Table 1

The mechanical properties of the ordered Ni₃Fe alloy with different stoichiometry when tested in vacuum and H₂.

Alloy	In vacuum		In H2		, %
	, MPa	δ, %	, MPa	δ, %
Ni-18Fe	627.7	32.5	509.3	15.6	51.9
Ni-22Fe	762.3	28.2	616.8	11.9	57.7
Ni-25Fe	725.9	23.4	505.7	6.9	70.7
Ni-28Fe	958.3	30.8	681.1	10.4	66.2