Abstract
The role of C and Mn during the growth of pearlite under non-steady state conditions is analyzed by comparing phase compositions of austenite, ferrite and cementite (γ+α+θ) through the use of transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), and atom probe tomography (APT) measurements across the austenite/pearlite interface. A local Mn enrichment and C depletion at the austenite/pearlite interface has been measured, which causes a change in the transformation driving force with time during divergent pearlite growth.
| Original language | English |
|---|---|
| Pages (from-to) | 67-70 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 104 |
| DOIs | |
| State | Published - Jul 15 2015 |
Funding
The authors acknowledge Acerinox for manufacturing the steel. This research was supported by ORNL’s Center for Nanophase Materials Sciences (CNMS) , which is a U.S. Department of Energy, Office of Science User Facility . Authors acknowledge financial support to MINECO and FEDER in the form of ENE2009-13766-C04-01 and MAT2013-47460-C5-2-P projects.
Keywords
- Divergent pearlite
- Growth rate
- Interface diffusion
- Pearlitic steel
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