چکیده مقاله
Laser cladding uses a laser heat source to deposit a thin layer on the base metal The verylow input heat transferred in this method causes very low mixing of the deposit with thesubstrate Also, it results in a very narrow heat affected zone with minimal distortion andcomplexity The main elements ofthe alloy cladding in most ofthe desired alloys includeCr, Co, Ni and Fe along with small amounts of W and Mo, and also metal carbides withconstituent components Inconel 713LC superalloy is a low carbon nickel based castsuperalloy, making this alloy one of the most widely used high temperature alloys thatare generally used in the manufacture of aircraft engine components, due to the highamount of gamma prime phase caused by Ti and Al alloy more than one critical value,this alloy is considered among non weldable alloys One of the basic methods ofrepairing this series of superalloys is laser coating methods In this research, the prerepair sample of Inconel 713 was reconstructed by Inconel 625 The results showed thatthe R growth rate of the dendrite tip increases at high speeds of laser coating, as aresult, the G/R ratio under combined freezing decreases and the structure tends towardsthe coaxial dendritic direction For this reason, with the increase of laser scanning speedfrom 4 to 6 mm/s, the coaxial dendritic structure increases Also, the porositymeasurement results of the sample with a reciprocating pattern indicate a porosity of lessthan 0 1%
کلیدواژهها
نویسندگان
M.R Borhani
PhD Student, Malek e Ashtar University of Technology and Iran
S.R Shoja-razavi
Professor, Malek e Ashtar University of Technology and Iran
Farid Kermani
PhD Student, Malek e Ashtar University of Technology and Iran
S.M Barekat
Assistant professor, Malek e Ashtar University of Technology and Iran
M Erfanmanesh
Assistant professor, Malek e Ashtar University of Technology and Iran
شیوه ارجاع
Borhani, M.R and Shoja-razavi, S.R and Kermani, Farid and Barekat, S.M and Erfanmanesh, M,1401,Investigating the solidification microstructure of Inconel 713 LCManufactured by Inconel 625 with direct laser deposition method,5th International Conference on Welding and Non Destructive Testing & 23rd National Conference on Welding & Inspection & 12th National Conference on NDT,Isfahan
ارائهشده در
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