The application of mixed powders with different mass fraction on laser additive repairing (LAR) can be an effective way to guarantee the performance and functionality of repaired part in time. A convenient and feasible approach is presented to repair TA15 forgings by employing Ti6Al4V-xTA15 mixed powders in this paper. The performance compatibility of Ti6Al4V-xTA15 powders from the aspects of microhardness, tensile property, heat capacity, thermal expansion coefficient and corrosion resistance with the TA15 forgings was fully investigated. The primary α laths were refined and the volume fraction of the secondary α phase was increased by increasing the mass fraction of TA15 in the mixed Ti6Al4V-xTA15 powders, leading to varied performances. In conclusion, the mixed Ti6Al4V-70%TA15 (x=70%) powders is the most suitable candidate and is recommended as the raw material for LAR of TA15 forgings based on overall consideration of the compatibility calculations of the laser repaired zone with the wrought substrate zone.

将不同质量分数的混合粉末应用于激光添加剂修复（LAR）可以是一种有效的方法，以确保及时修复被修复部件的性能和功能。本文提出了一种利用Ti6Al4V- x TA15混合粉末修复TA15锻件的简便可行的方法。从显微硬度，拉伸性能，热容量，热膨胀系数和耐腐蚀性方面全面研究了Ti6Al4V- x TA15粉末与TA15锻件的性能相容性。通过增加混合Ti6Al4V- x中TA15的质量分数，精炼一次α板条，并增加二次α相的体积分数TA15粉末，导致各种性能。总之，混合的Ti6Al4V-70％TA15（x = 70％）粉末是最合适的候选材料，并且基于对激光修复区与锻造区的相容性计算的整体考虑，建议将其用作TA15锻件LAR的原材料。底物区。