I just want to know the changes occurs on mechanical properties and sliding wear behavior if we add tungsten as a filler in Co-Cr alloy.
The tungsten added is a carbide former (WC) and a strength of the solid solution. Most of the elements added to cobald alloys are carbide formers.
The formation WC, which acts as second phase particles in Co-Cr matrix , and then hinders the motions dislocations as well as the grain boundary migration. The result is the increase in the strength of the alloys according to the connection: SigmaY= Sigmao + 4G b/ Lm where Lmis the mean distance between dispersed particles.
what happened the compressive strength of the Co-Cr alloy if we add tungsten in the alloy. Is it increase or decrease.........??
Compressive strength of Co-Cr alloys increases upon addition of tungsten. Co-Cr-W alloys are ternaries first investigated by Haynes. He discovered the high strength and strainless nature of binary Co_Cr alloys. Later by adding Tungsten as powerful strengthening agent within the Co_Cr system, which is also called Stellite alloys in practice..
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