Accession Number : AD0775311

Title :   The Effect of Hydrogen on the Deformation of Iron.

Descriptive Note : Technical rept.,

Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA METALS RESEARCH LAB

Personal Author(s) : Bernstein,I. M.

Report Date : FEB 1974

Pagination or Media Count : 15

Abstract : 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)

Descriptors :   *Iron, *Deformation, *Hydrogen, Grain size, Crystal lattices, Stresses, Grain boundaries

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE