That, by the way, was the answer if you'd written "swap", which is what I read where you wrote "snap".
In answer to your actual question, axles do snap, usually from fatigue across the threads just inboard of the drive side cone. Oddly, solid axles are worse than QR ones, as the compression from the QR skewer actually reduces the peak tensile load on the axle in spite of there being less material due to the hole through the middle
That, by the way, was the answer if you'd written "swap", which is what I read where you wrote "snap".
In answer to your actual question, axles do snap, usually from fatigue across the threads just inboard of the drive side cone. Oddly, solid axles are worse than QR ones, as the compression from the QR skewer actually reduces the peak tensile load on the axle in spite of there being less material due to the hole through the middle