Martensite midrib in an Fe-1C-17Cr stainless steel
Journal
Solid State Phenomena
Journal Volume
172-174
Pages
67-72
Date Issued
2011
Author(s)
Abstract
An Fe-1.0C-17Cr (wt.%) stainless steel was subjected to subzero treatment to investigated the structure of martensite midrib. The midrib region appeared in the thin plate and lenticular martensites have been observed detailed by TEM. The TEM result reveals that the transformations of thin plate martensite and lenticular martensite are initiated at the same midrib region. The former keeps the lattice-invariant deformation mode of twinning during subsequent growth, whereas the latter combines both twinning and slip modes. Midrib region is a preferential position for carbide precipitations after tempering. M 3 C and M 23 C 6 carbide were found in this alloy, and related to the ferrite by Bagaryatsky OR and K-S OR, respectively.
Type
conference paper