Okay, it's all coming back to me now. I remember in one physics class we talked about magnetic grains. So this is the same thing. When someone says "single-cry

Okay, it's all coming back to me now. I remember in one physics class we talked about magnetic grains. So this is the same thing. When someone says "single-crystal", I think of a structure with zero boundary regions, a structure made up of one big grain. This is what was in the title of the article. Does that describe this turbine blade?