Crack Repair in Heat Resisting Superallloys applying Stress Field Assisted Diffusion Phenomenon

本工作将应力场辅助扩散现象与微火花涂层相结合，探索了一种新的工程修复镍基高温合金疲劳裂纹的方法和工艺。一系列的实验工作表明，所提出的方法是非常成功的修复疲劳裂纹，在实验室条件下人工复制。这些结果被总结成一个新的损伤图，显示在服务条件（S）是（是）更有效的建议的修复方法应用。

This work has explored a new engineering method and process to repair the fatigue cracks in heat resisting Ni-based superalloys, combining the stress field assisted diffusion phenomenon and a micro-spark coatings. A series of the experimental works showed that the proposed method was very successful for the repair of the fatigue cracks which were artificially reproduced under the laboratory conditions. These results were summarized into a new damage map showing what in-service condition(s) is(are) more effective to which the proposed repair method is applied.