Application of laser surface alloying for improvement of wear resistance of bearing steels working at severe conditions and of light titanium alloys
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چکیده
The task of wear resistance improvement for bearing steels working at high loads in water medium was solved by laser alloying with Sn. The modified zone contains up t o 22 wt.% Sn, which is used as a solid lubricant during exploitation. As a result the bearing race's durability is increased 2.5 times. The combination of laser alloying from a nitrogen jet with surface plastic deformation (SPD) was used t o produce Titanium nitride layers with minimum roughness, no cracks, and no residual stresses. The wear resistance tests showed the real possibility of using the developed method t o manufacture friction joints from light Titanium alloys.
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