TY - JOUR
T1 - The role of grain boundary diffusion in initial selective oxidation kinetics of a manganese-aluminum TRIP steel
AU - Thorning, Casper
AU - Sridhar, Seetharaman
N1 - Funding Information:
The research presented in this paper was supported by National Science Foundation Grant DMR-0307188.
PY - 2005/10
Y1 - 2005/10
N2 - Confocal scanning laser microscopy (CSLM) was used in real-time observation of alloy element oxidation of a manganese/aluminum transformation induced plasticity (TRIP) steel. CSLM images reveal a marked role of grain boundaries in the overall initial oxidation kinetics of the alloy and consequently in the morphology of the initial surface oxide. Changing the grain size and the oxidation temperature results in a change in the overall kinetics of selective oxidation and in the importance of oxidation at grain boundaries, respectively. Electron backscattered diffraction mapping was used to characterize the grain boundaries intersecting the surface over an area of the alloy. Subsequent CSLM observation of selective oxidation over the same area allowed quantification of oxidation kinetics as a function of individual grain boundary misorientation.
AB - Confocal scanning laser microscopy (CSLM) was used in real-time observation of alloy element oxidation of a manganese/aluminum transformation induced plasticity (TRIP) steel. CSLM images reveal a marked role of grain boundaries in the overall initial oxidation kinetics of the alloy and consequently in the morphology of the initial surface oxide. Changing the grain size and the oxidation temperature results in a change in the overall kinetics of selective oxidation and in the importance of oxidation at grain boundaries, respectively. Electron backscattered diffraction mapping was used to characterize the grain boundaries intersecting the surface over an area of the alloy. Subsequent CSLM observation of selective oxidation over the same area allowed quantification of oxidation kinetics as a function of individual grain boundary misorientation.
UR - http://www.scopus.com/inward/record.url?scp=27744451792&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27744451792&partnerID=8YFLogxK
U2 - 10.1361/154770305X66691
DO - 10.1361/154770305X66691
M3 - Article
AN - SCOPUS:27744451792
SN - 1547-7037
VL - 26
SP - 539
EP - 546
JO - Journal of Phase Equilibria and Diffusion
JF - Journal of Phase Equilibria and Diffusion
IS - 5
ER -