研究了Ti 811(Ti8Al1Mo1V)钛合金表面离子束增强沉积(IBED)0Cr18Ni9膜层的膜基界面成分分布、膜基结合强度、膜层硬度和摩擦学行为. 利用喷丸形变强化对IBED膜层进行后处理,拟达到联合提高钛合金高温微动疲劳抗力的目的. 结果表明:离子束增强沉积技术可以获得致密度高,晶粒细化,孔隙率低,膜基结合强度高的0Cr18Ni9膜层,从而显著提高了钛合金表面硬度和耐磨性能;离子束增强沉积0Cr18Ni9膜层的耐磨性能与喷丸形变强化引入的表层残余压应力协同作用,使Ti811合金在350℃高温下的微动疲劳抗力显著提高,并且高于喷丸强化或IBED膜层的单独作用.
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