The Effect of Hydrogen on the Deformation of Iron.
CARNEGIE-MELLON UNIV PITTSBURGH PA METALS RESEARCH LAB
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The role of hydrogen on the room temperature deformation behavior of low interstitial and interstitial-free iron has been investigated. Experiments were carried out under dynamic cathodic polarization conditions to maintain a fixed level of dissolved hydrogen. Hydrogen reduces the flow stress relative to hydrogen free iron for all grain sizes in the interstitial-free iron in the low interstitial iron, hydrogen reduces the flow stress for coarse-grained, while increasing it for fine grained samples. The results are rationalized by the different behavior of hydrogen at grain boundaries and in the lattice, and on the interaction between hydrogen and other solutes. Author
- Metallurgy and Metallography