The Eutectic metal spray system I purchased recently for rebuilding crankshaft journals has a "hard facing" compound that was included with the kit. Once I get it set up and working, I might experiment with rebuilding those axle shafts. The procedure involves machining a shaft somewhat undersize, putting a series of V grooves in it, building up the shaft slightly oversize, and grinding it to finish diameter. It creates less stress than welding.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!