激光增材制造铝青铜合金研究进展OA

Aluminum bronze alloys are widely used in marine industrial fields such as ship propellers,high-pressure pump bodies,and valves due to their excellent mechanical properties,cavitation resistance,and corrosion resistance.However,traditional casting processes have drawbacks in the preparation of aluminum bronze alloys,including long production cycles,high costs,and low part precision,and the as-cast alloys are prone to internal porosity,shrinkage cavities,and surface slag inclusions.As a novel advanced manufacturing technology,laser additive manufacturing enables rapid forming of metal components,and its rapid cooling process facilitates the formation of fine grains,thereby improving alloy performance,demonstrating great potential and broad prospects in the preparation of aluminum bronze alloys.This paper focuses on two processes,selective laser melting and laser melting deposition,introduces the laser additive manufacturing processes for aluminum bronze alloys and the associated challenges,reviews recent research achievements both domestically and internationally on process characteristics,microstructure,and properties,analyzes the main existing problems and research gaps,and finally points out that expanding the variety of aluminum bronze alloy materials for laser additive manufacturing,optimizing laser process parameters,and controlling defects during the forming process are key directions for future research.