难加工金属材料切削表面完整性预测与调控OA

Machined surface integrity,a composite reflection of the geometric,physical,chemical,and mechanical properties of the machined surface layers,is dictated by the thermo-mechanics loads and material removal modes inherent to the cutting processes.This integrity directly governed the in-service performance and lifespan of engineered components.A thorough investigation into how conditioning strate-gies influenced surface integrity was therefore fundamental to realize high-integrity surfaces,and was criti-cally important for optimizing the machining of difficult-to-cut metallic materials.This review began by cat-egorizing the metrics of machined surface integrity for these materials based on three aspects:geometric fea-tures,microstructural evolution,and surface-layer mechanical properties,while also summarizing the ap-proaches for developing predictive models.Subsequently,it elucidated research advancements in machined surface integrity conditioning strategies of difficult-to-cut metallic materials,critically comparing the dis-tinct influence mechanisms of tool and process optimization,multi-energy field assisted machining,and workpiece pre-treatment on machined surface integrity.Finally,this paper explored the prediction accuracy of current models and the general applicability of conditioning strategies,offering an outlook on future re-search priorities.