中文摘要：

利用金相分析、维氏硬度、X射线衍射、室温和高温（600℃）静载拉伸等方法，对整体叶盘候选材料Ti60合金进行激光成形修复组织与性能的研究。研究发现：激光成形修复后，修复区与锻件基体形成致密的冶金结合，热影响区的组织从锻件的双态组织逐步过渡到激光修复区的魏氏组织。激光成形沉积态修复区的硬度高于锻件基体，热影响区的硬度处于两者之间，经过退火（650℃，2h／空冷），激光修复区硬度减小；激光修复结合面测试试样室温和600℃高温拉伸测试都断裂在锻件基体；不同修复体积（10％、20％、50％和80％）的试样室温和高温（600℃）强度高于锻造态，室温塑性比锻造态低，而高温塑性与锻造态相当。

英文摘要：

In the present paper, the microstructure and mechanical properties of laser solid repaired Ti60 alloy as one of the candidate materials for blisks were investigated with Optical Microscopy（OM）, Micro-hardness, X-Ray Diffraetion（XRD） and the static tensile text. It was found that there is dense metallurgical bonding between laser repaired zone and substrate aft＇er laser solid repaired. The mierostructure of heat affected zone changed from duplex microstructure of substrate to Widmanstatten structure of laser repaired zone gradually. The result of hardness test shows that the hardness in laser repaired zone is apparent higher than substrate, through annealing treatment, the hardness of laser repaired zone was decreased. The fracture of jointsurface test sample occurred at the substrate both in the room and the 600℃ static tensile test condition. The tensile strength of the different laser repairing-volume samples including 10%, 20%, 50% and 80% at room temperature and 600℃ are both higher than wrought, the plasticity of room temperature is lower than wrought, while the plasticity of 600℃ approach those of wrought.