Effects of Aluminum on Hydrogen Solubility and Diffusion in Deformed Fe-Mn Alloys

Table 1

The solution enthalpies of hydrogen at the four investigated octahedral sites and in the Fe-Mn reference system. The second row describes the nearest neighbour (n.n.) chemical environment of the hydrogen atom in the octahedral position, where, for example, 4-2-0 denotes that it is surrounded by 4 Fe, 2 Mn, and no Al atoms.

	Fe-Mn	oc1	oc2	oc3	oc4
n.n. (Fe-Mn-Al)	4-2-0	3-2-1	4-2-0	5-0-1	6-0-0
() (eV)	0.054	0.140	−0.010	0.130	0.073