Effect of solutionizing and quenching treatment on Ti6Al4V alloy: a study on wear, cavitation erosion and corrosion resistance
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Titanium alloys are preferred in many engineering applications due to their high specific strength and superior corrosion resistance. However, its abrasion resistance is not very high and it limits the use of titanium alloys. The aim of this study is to examine the effect of solutionizing temperature on microstructure, hardness, wear, cavitation resistance and corrosion behavior of the Ti6Al4V alloy. For this purpose, quenching in water (WQ) was carried out by solutionizing the Ti6Al4V alloy at the temperatures 1050 and 960 degrees C containing the beta-transus and beta + alpha regions, respectively. The hardness of Ti6Al4V alloy increased with increasing heat treatment (HT) temperature. Depending on the increased hardness value, the highest wear resistance was observed in the specimen, which was heat treated at 1050 degrees C for 1 h and quenched. However, maximum cavitation resistance was observed in the specimen, which was heat treated at 960 degrees C for 1 h and quenched. The non-heat treated specimen exhibited the minimum cavitation resistance. Corrosion rate values were determined as 1.85, 0.66 and 0.46 9 10(-3) mm/year for non-heat treated, 960 and 1050 degrees C heat treated + quenched specimens, respectively. It has been determined that heat treatment reduces the corrosion rate 3-4 times.