Sorry I can't get into specifics right now, but I have come across this situation before. A stainless steel electrode was used (with all the inherent problems) in this particular situation - and is probably the best bet for you also. As far as NDT, depending on the code/standard you have to...
Perhaps this needs some clarification...
Centrifugal casting produces a variable microstructure through the wall thickness. A very fine structure of irregular graphite nodules in a ferrite matrix is produced at the outer surface, an interdendritic fine flake structure through the mid section, to...
Due to some recent failures of a spun grey cast iron water mains (due to graphitic corrosion from both internal and external surfaces) I would now like to determine the mechanical properties of the pipe material. This information would then be used to assess the critical flaw size and potential...
Considering the age and the likelihood of them being grey cast iron, there is also a possibility for graphitic corrosion. This is very hard to detect via NDT, but may show up on the valves if they are of the same material.
I have a sample of aluminium (6061-T6) that has a hard, highly adherent matt grey coating on both surfaces. I need some method of identifying the coating type. Any ideas?
What I know so far is
-The coating remains intact/adherent during a tensile test
-coating is harder than the aluminium...
This is sort of a two part question.
At what temperature does copper begin to experience rapid oxidation in atmospheric conditions? Is this temperature related to the type of oxide being formed? (eg CuO vs Cu203).
On a separate issue, has anyone come across branching transgranular type cracking...
This is sort of a two part question.
At what temperature does copper begin to experience rapid oxidation in atmospheric conditions? Is this temperature related to the type of oxide being formed? (eg CuO vs Cu203).
On a separate issue, has anyone come across branching transgranular type cracking...
