This is the part of the blow-out piece that was bent almost 90 degrees. Unfortunately, I didn't take a good pic of the crack; on the right at the apex of the bend
This is a 20X photomicrograph after etching with 3% nitric acid/alcohol of the crack area
As part of the failure analysis, Adam is going to label the best images. You can clearly see the crolle pattern;
iron is silver-white, steel grey-black. The black dots are graphite (carbon) that are from the cast iron. This crack does appear to be between the iron and steel thin strips that define the 'leaves' within the scroll (the twisted rod). Adam explained the lines at the lower right, but I forgot
This is the first published photomicrograph of a pattern welded barrel!!And yes, there better be some articles from all this to off-set the almost $1300 for the failure analysis, $125 for MPI, $125 per radiography, and $50-$70 per tensile strength test. AND more photomicrographs if, as I suspect, radiography of a Syracuse Arms barrel at TEAM right now shows a crack.
