Statistical modeling of single-pass claddig of ۲۲۰۹ steelon Mo۴۰ steel Substrate by linear regression method

۲۲۰۹ dual-phase (ferritic-austenitic) stainless steel combines the best advantages offerritic and austenitic stainless steels. The resistance to pitting and pitting corrosion iscaused by the high amounts ofwormwood and molybdenum in its chemical composition.In this research, the optimization of the main coating parameters including laser power(P), scanning speed (S), powder feeding rate (F), experimental design and prototypingand optimization of single pass filler of ۲۲۰۹ duplex steel on Mo۴۰ steel substrate wasdone. The results showed that the width, height, wetting angle and single-pass mixinghave a linear relationship with the combined parameter P۵.۰۰V-۰.۷۶, P۰.۴۴V۰.۷۸F-۱.۹۶,P۳.۰۷V۲.۶۲F-۳.۳۸ and P۳.۳۰V۱.۲۹F-۲.۵۸, respectively. Evaluation of optimal claddinghardness was done using ۸۰۰W power, ۱۳ mm/s speed and ۷ mm/s feeding rate and ۵۰%overlap. Although the hardness of the cladding sample is lower than the substrate; thehardness profile of the cross section is within the permissible range for the repaircladding. The hardness of the ۲۲۰۹ coating is up to ۳۷ Vickers less than the Mo۴۰substrate.

کلیدواژه ها:

Laser Claddig ، Mo۴۰ Steel ، ۲۲۰۹ Duplex Steel ، Linear Regression ، Optimization ، Hardness.