Hello,
I have two images taken of a metal sample that were snapped by a charpy impact test. The image with the black dots (microvoids) was the sample at room temperature, and the flat one was the sample that had been dipped in liquid nitrogen just before impact.
My question is, what role do the microvoids in the room temperature sample correspond to a higher strength of the material, since it was able to absorb more energy to snap compared to the other sample.
I know it must be something to do with the brittleness of the material, but I'm not too keen on what the microvoids are doing on the microscale that causes absorption of more energy.
Thank you
I have two images taken of a metal sample that were snapped by a charpy impact test. The image with the black dots (microvoids) was the sample at room temperature, and the flat one was the sample that had been dipped in liquid nitrogen just before impact.
My question is, what role do the microvoids in the room temperature sample correspond to a higher strength of the material, since it was able to absorb more energy to snap compared to the other sample.
I know it must be something to do with the brittleness of the material, but I'm not too keen on what the microvoids are doing on the microscale that causes absorption of more energy.
Thank you
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