Abstract
High-precision Ti6Al4V surfaces with superior properties are in urgent demand in the manufacturing industry. The existing production model that separates surface strengthening from processing has limitations. Therefore, an integrated Ti6Al4V surface machining and strengthening method, laser carburising grinding, is proposed. Remelt layers containing diffusely distributed granular TiC phases are prepared on Ti6Al4V surfaces by coupling laser carburising alloying with grinding processes, improving the material surface's mechanical properties and grindability. Compared with the separated method, the surface shape accuracy is increased by 16 %, the surface hardness reaches 652 HV, and the surface wear resistance is greatly improved. The results improve the surface machining-strengthening integration theory of titanium alloy. The related technology is of great practical significance in guiding production.
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