Research progress on effect of heat treatment on microstructure and mechanical properties of 718Plus superalloy
718Plus alloy is a recently developed nickel-based superalloy which is capable of maintaining excellent strength,hot working and welding performance.It is widely used in hot-end components such as casing,blades,fasteners and turbine disks on aero-engines.The heat treatment system has great influence on the microstructure and properties of 718Plus alloy,as well as the subsequent processing of machining and application.The research status and progress of the influence of heat treatment system on the microstructure and properties of 718Plus alloy at home and abroad were reviewed.The growth rhythm and strengthening mechanism of strengthening phase γ'in 718Plus alloy were discussed.The effects of composition and structure of δ/η phase,its quantity,morphology and precipitation position on the mechanical properties of the alloy were analyzed.The necessity of process matching between material characteristics and processing process is also expected to meet the manufacturing requirements of different parts of 718Plus material.
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维普
