مدل‌سازي و بررسي رفتار سايشي سوپرآلياژ ساخته‌شده به روش‌هاي ساخت افزودني و مرسوم در دماهاي بالا و محيط

In recent years, additive manufacturing technology has been considered as one of the most important new manufacturing technologies. In this manufacturing method, the part is produced by a layer by layer structure, which leads to increased speed an‎d accuracy, manufacturing complex parts, reduced production time an‎d reduced waste in the production process. Parts manufactured in this method have special differences in terms of microstructure compared to previous methods. Wear is one of the most important factors in the destruction of parts an‎d equipment an‎d causes a decrease in efficiency an‎d a decrease in the life of parts, for this reason, predicting the life of parts an‎d the effect of the components affecting it is of particular importance. In this study, the effect of manufacturing method, temperature, speed an‎d force on the wear rate of stainless steel 316L, Inconel 625 an‎d Inconel 718 was investigated using the pin on disk wear test. Also, the wear prediction of 316L stainless steel was performed using the continuum damage mechanics (CDM) method an‎d its results were compared with experimental data. The results show that the wear rate an‎d friction coefficient are strongly affected by the vertical force an‎d sliding velocity, an‎d the change of these components leads to a significant change in the wear response of the samples. The effect of sliding velocity is less severe compared to the vertical force, but in combination with high force, it plays an important role in intensifying the wear. At high temperature, the wear rate decreases compared to the ambient temperature. Also, no significant difference was observed between the wear rate of conventional samples an‎d samples manufactured by additive manufacturing under similar conditions. Finally, the modeling results an‎d experimental data show that the numerical model has a good ability to predict the overall trend of the wear behavior of 316L stainless steel.

صالح اكبرزاده , محسن اصفهانيان

محسن بدرسماي

عليرضا شهيدي ريزي , محمد سيلاني