I realized that I don't express my gratefulness often enough. I am really good at complaining, but I've known that for a while now. So, here it is, some gratitude! And it even concerns the things I am filling my poor, tired brain with...
These images are taken on a fancy microscope (SEM) and I LOVE them. I didn't take them, but I think they are beautiful. They are both fracture surfaces of a 1018 steel tensile test. This is a cup and cone fracture characterized by all the microvoid coalescence (dimples). Each one of those is a little tiny particle nucleating, creating localized strain that leads to necking and fracture. Basically the material tears away in little sections from these voids. crazy huh?
