Abstract
AbstractHydrogen‐damaged defects of heavily deformed iron, AISI 304‐, and 316‐stainless steels were investigated by measuring Doppler broadening energy spectra (DBES) of positron annihilation radiation. It is interestingly found that S‐parameter as a function of energy on three kinds of deformed samples falls into the similar variation, independent of chemical elements and impurities. A larger S value near the surface in deformed and hydrogen‐damaged samples than in samples without hydrogen‐damaged samples is because of the additional larger‐sized defects (e.g. voids) induced due to hydrogen damage. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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