Fig. 1. Backscattered electron micrograph showing the texture of quenched metal for sample SiW1.

Left to right: The images zoom in from full sample to the bulk metallic phase and to metallic quench structures of Fe-Si darker than the Fe-Ni alloy surrounding it. The holes are LA-ICPMS pits made during the analysis of composition. The absence of hydrogen bubbles in the metallic phase is observed in all our samples. It evidences no exsolution of the hydrogen from the metal. This contrast of texture compared to the study of Okuchi (8) is due to the low hydrogen content in our bulk sample, preventing the metal saturation in hydrogen and therefore the loss of hydrogen during decompression.