Turbine blades are pure aluminum, which melts at 1220 degrees. They operate inside the compression chamber of the turbine to move gases that are around 1500 degrees. There’s a whole art to making them single crystals and optimizing flow rates so they don’t melt, or explode, or melt and explode. And a lot of work goes into making sure when they do melt and explode, they don’t turn into supersonic bullets. Just barely though, because armor is heavy.
The crystallization is mainly about strength so they don’t snap or deform at a billion rpm, because typical aluminum would shatter under the load. They don’t melt because of magic. https://www.youtube.com/watch?v=QtxVdC7pBQM
Turbine blades are pure aluminum, which melts at 1220 degrees. They operate inside the compression chamber of the turbine to move gases that are around 1500 degrees. There’s a whole art to making them single crystals and optimizing flow rates so they don’t melt, or explode, or melt and explode. And a lot of work goes into making sure when they do melt and explode, they don’t turn into supersonic bullets. Just barely though, because armor is heavy.
thanks for the explanation. So because of the single crystal(??) they don’t melt since it changes the melting point?
The crystallization is mainly about strength so they don’t snap or deform at a billion rpm, because typical aluminum would shatter under the load. They don’t melt because of magic. https://www.youtube.com/watch?v=QtxVdC7pBQM