Analysis of High Temperature Ni Brazing via 3D ÂµXCT & Differential Scanning Calorimetry

通过 3D –XCT 分析高温镍钎焊

基本信息

批准号：
538433-2018
负责人：
Phillion, AndréBernardAB
金额：
$ 1.42万
依托单位：
McMaster University
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2022
资助国家：
加拿大
起止时间：
2022-01-01 至 2023-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=758227
关键词：
Analysis Temperature Ni Brazing via

项目摘要

Component repair is critical for the lifecycle of aero-engine and industrial gas turbines, increasing lifespan thus reducing costs and environmental waste. The Ni based superalloys that comprise the hot section components of a gas turbine are typically repaired using a powder-based brazing process or a wire-based welding process. Brazing is advantageous because of its ability to fill structural cracks and rebuild complex components segments while not interacting excessively with the base metal. Unlike welding, brazing does not involve melting of the workpiece.Although much is known of the final physical metallurgy and mechanical properties of a Ni superalloy component repaired via powder metallurgy, there is limited knowledge regarding the underlying mechanisms occurring during brazing. In this collaborative study with Liburdi Turbine Services, an experimentally-based research project will be undertaken to characterize the physical structure and evolving interactions between the various brazing materials during the Liburdi Powder Metallurgy(TM) repair process. Advanced in situ and operando 3D X-ray computed tomographic microscopy and differential scanning calorimetry techniques will be utilized to create a library of 3D images showing the structural evolution of the material, and to supplement these images with quantitative insight of the corresponding phase transformations. The research results will enable Liburdi to improve their processes for creating high-strength repairs of Ni superalloy components used in gas turbine applications.

部件维修对于航空发动机和工业燃气轮机的生命周期至关重要，可以延长使用寿命，从而减少成本和环境浪费。构成燃气轮机热部部件的镍基高温合金通常使用粉末钎焊工艺或焊丝焊接工艺进行修复。钎焊是有利的，因为它能够填充结构裂缝并重建复杂的部件片段，同时不会与母材过度相互作用。与焊接不同，钎焊不涉及工件的熔化。尽管人们对通过粉末冶金修复的镍高温合金部件的最终物理冶金学和机械性能了解很多，但对于钎焊过程中发生的潜在机制了解有限。在这项与 Liburdi Turbine Services 的合作研究中，将开展一个基于实验的研究项目，以表征 Liburdi Powder Metallurgy(TM) 修复过程中各种钎焊材料之间的物理结构和不断变化的相互作用。先进的原位和操作 3D X 射线计算机断层显微术和差示扫描量热技术将用于创建显示材料结构演变的 3D 图像库，并通过相应相变的定量洞察来补充这些图像。研究结果将使 Liburdi 能够改进燃气轮机应用中使用的镍高温合金部件的高强度修复工艺。