抄録
In order to reveal the effect of indentation load on Vickers hardness of austenitic stainless steel after hydrogen charging, the Vickers hardness measurements have been conducted with three different indentation load of 0.49, 1.96 and 9.80 N. The obtained results show the Vickers hardness increases along with hydrogen charging time and the increase in the Vickers hardness depends on magnitude of indentation load. In the load of 0.49 N and 9.80 N, the Vickers hardness has a maximum value of 3.04 and 2.04 GPa which is 1.58 and 1.15 times larger than value of 1.73 and 1.70 GPa before hydrogen charging, respectively. It might be due to effect of hydrogen concentration gradient in respect to depth on deformation during indentation.
