University of Cambridge

Titanium-vanadium carbide in steel


A. R. Waugh

An imaging atom-probe study of a mixed carbide particle in a steel containing titanium and vanadium. Bob wanted to confirm that there is a disturbance in the trajectories of the carbon at the edges of the particle, since the carbon distribution goes beyond the boundaries of the carbide particle. The possibility of such an aberration had been suggested to him by P. Turner.



Photographs courtesy of Dr Sally Waugh.

Titanium/vanadium carbide in steel, imaged while the specimen is at 60 K.
titanium carbide, vanadium carbide, mixed carbide, steel, A. R. Waugh

Neon field-ion image.
.

titanium carbide, vanadium carbide, mixed carbide, steel, A. R. Waugh

An image with just the Fe2+ ions, showing the absence of iron in
the carbide particle.

titanium carbide, vanadium carbide, mixed carbide, steel, A. R. Waugh

An image using the carbon C2+ ions.

titanium carbide, vanadium carbide, mixed carbide, steel, A. R. Waugh

Combined image of the C2+ ions superimposed on the field-ion image.



titanium carbide, vanadium carbide, mixed carbide, steel, A. R. Waugh

Schematic of imaging atom probe apparatus.








4th edition
4th edition, 2017
3rd edition
3rd edition, 2015
1st edition
1st edition, 2017


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