1977 年 26 巻 280 号 p. 31-37
The strain state of a single crystal of austenitic stainless steel induced by hydrogen charge was measured by the divergent X-ray method. The stress-strain analysis of a face centered cubic crystal has been established already and it is important to measure the six lattice strains in their precise calculation.
In this paper, the change of the lattice parameter was measured from a perfect diffraction ellipsoid, reflected from six planes. From the measured six strains, the stress and strain states of single crystals of austenitic stainless steel were analysed and their principal strain caused by solute hydrogen were found to be in    directions. Thus, it is considered that hydrogen atoms occupy the octahedral sites in a face centered cubic lattice.