Effect of VC on Mechanical Properties of Sintered High Speed Steel Made from Water Atomized Powder
1991 Volume 38 Issue 1 Pages 31-34
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1991 Volume 38 Issue 1 Pages 31-34
The effect of VC on mechanical properties of sintered high speed steel(PX16; equivalent for SKH51) made from water atomized powder has been studied. The mechanical properties such as transverse rupture strength and microvickers hardness have been measured and optical and electron microscopic observation have been carried out. The results obtained were summarized as follow;
1) Microvickers hardness of the composite increases with the increase of the mass fraction of VC.
2) Transverse rupture strength decreases with the increase of the mass fraction of VC.
3) In consequence of added VC, M6C type carbides were extinguished.
4) Carbide grain size in this alloy is growing with the increase of the mass fraction of VC.
