V Raginel A Gerardin T3 Cylinder 1 Base material Average grain size 100 um Nonmolten Molten Columnar grains T3 Cylinder 9 First 5 mm T391 Nonmolten Grains 100 ID: 919927
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Slide1
Results of microscopic analysis II
V. Raginel, A. Gerardin
Slide2Slide3T3 – Cylinder 1
Slide4Slide5Base
material: Average grain size ~100 um
Slide6Non-molten
Molten
Columnar
grains
Slide7T3 – Cylinder 9
Slide8Slide9First ~5 mm - T3-9/1
Slide10Non-molten
Grains
~
100
um
Molten
Small Grains ~ 30
um
T3-9/1
Slide11Non-molten
Partially molten
Non-molten
T3-9/2 - After last visible micro-cavity
Slide12Crack following join of grains
T3-9/2 - After last visible micro-cavity
Slide13T2 – Cylinder 8
Slide14Slide15Zoom of the splash coming from cylinder 7
T2-8/1
Slide16Non-molten
Between the two lines formed by the micro-cavities - T2-8/1
Molten
Small Grains ~ 30
um
Slide17Single line crack in T2-8/2
Slide18T1 – Cylinder 6
Slide19Slide20Example of a crack in T1-6
Slide21Conclusions
Damage Depth confirmed. (T1/58 cm, T2/79.5cm, T3/85cm)
Copper
that has been molten shows smaller grains structure than the original material, or columnar grains (e.g. T3 cylinder 1)It is confirmed that in the last damage cylinders of each target, the copper between the two lines of micro-cavities has be molten.