Abstract: The hydrogen distribution
ahead of crack tip in nickel single crystal was obtained
quantitatively by Ion Microprobe Mass Analyzer (IMMA) with
loading specimens. Two peaks of hydrogen concentration appeared
in front of the crack tip, one peak localized in crack tip and
another peak localized in some distance from the crack tip. It
is concluded that the distribution of dissolved hydrogen with
two peaks correspondences the distribution of strain field and
stress field respectively, due to interaction of hydrogen with
dislocation and hydrostatic stress.
Key words:
Hydrogen inducing crack Hydrogen
distribution Stress & strain field
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