WEAR-RESISTANCE OF BINARY CHROMIUM-ALLOYS WITH TI, ZR, HF, NB, AND TA

The sliding wear resistance was determined for chromium alloys with ti tanium, zirconium, hafnium, niobium, or tantalum. Those additives incr eased the wear resistance when present up to their maximum contents, w hich were 19% por Ti and 30-35% far the others (eutectic compositions) . Comparative analysis of the data and the phase diagrams showed that the allaying had a larger effect in the one-phase regions of chromium- based solid solutions than for two-phase alloys containing Laves phase s. In regard to improving the wear resistance of two-phase alloys the metal rank in the order Ti, Nb, Ta, Hf, and Zr.