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关于无钨高速钢已有许多研究。由于其工艺性能较差,它未能得到扩大应用。含3%Mo的无钨高速钢POX6M3φ3和POM3φ2与P6M5相比,在500～550℃的热硬性较低,原因是它含碳化物Me_6C较少、渗碳体型碳化物Me_3C较高并且在马氏体晶格中原子间的结合力弱。曾研究了POM3φ2钢(含0.85%C)从1200℃淬火后α(γ′)固溶体和碳化物相的成分用显微X射线光谱仪测定15个点的固溶体成分,说明从合金化性质和数量上不如P6M5钢。P6M5钢从1220℃淬火后,固溶体含ΣW+Mo+V=4.1%
There have been many studies on tungsten-free high-speed steel. Due to its poor process performance, it has not been expanded. Compared with P6M5, POX6M3φ3 and POM3φ2 of 3% Mo-free tungsten-free high-speed steel have a lower thermosoftening hardness at 500-550 ° C due to its lower content of Me_6C and higher value of Me_3C of cementite type carbide, The binding energy between atoms in the bulk lattice is weak. The composition of α (γ ’) solid solution and carbide phase of POM3φ2 steel (containing 0.85% C) after quenching from 1200 ° C has been studied by using a micro X-ray spectrometer to measure the solid solution composition at 15 points, As P6M5 steel. P6M5 steel quenched from 1220 ℃, the solid solution containing ΣW + Mo + V = 4.1%