Correlations between the initial diffusible hydrogen
content of welds measured with the ISO-mercury test and
the Osaka University mercury test are discussed. A few
factors in the test procedure were found to have a great
influence on the determination of the hydrogen content.
The result was dependent on the material of the specimen,
the degassing temperature prior to the test and the
surface condition of the test specimen.
The data from the quenched specimens are not truly
representative of the hydrogen content responsible for
cold cracking. An analytical method for determining the
remaining diffusible hydrogen content at 100 °C was also
studied. The results show that this analytical method
suggested recently by Terasaki et al. is very applicable.
|Place of Publication
|VTT Technical Research Centre of Finland
|Number of pages
|Published - 1983
|MoE publication type
|D4 Published development or research report or study
|Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
- welded joints
- weld defects
- cold cracking