Development of electro-spark deposition technology for repair of Ni-based superalloy components

镍基高温合金部件修复电火花沉积技术的发展

• 批准号: 505378-2016
• 负责人: Zhou, Norman
• 金额: $ 8.41万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618413
• 关键词: Development; electro; spark; deposition; technology

The research and development of repair technology for superalloy components is of paramount importance for the large number of industries that depends on them, such as the aerospace and power generation industries. Due to the nature of superalloys, normal repair operations such as arc welding can actually cause detrimental effects to the repaired component's mechanical performances through changes of the microstructure within the heat affected zone. The use of LASER based cladding processes and additive manufacturing have become popular for the building up and repair of super alloy components. Although the use of LASER based techniques reduces the volume of the heat affected zone compared to traditional welding process, the heat affected zone remains to exist nonetheless. The proposed project aims at exploring the use of Electro-Spark Deposition (ESD) for the buildup and repair of Ni-based superalloy components. The use of ESD is expected to lead to an even smaller heat affected zone than that of the LASER based processes and thus should be less detrimental to the mechanical performances of the repaired parts. This project builds upon Huys Industries' patented and patent pending ESD technology and aims to broaden the applicability of their technology, such as for use in the aerospace and power generation industries. At the same time, this project will investigate the fundamental phenomena that takes places during the ESD process and aims to use that knowledge to optimize it for the building up of a thick, greater than several hundred microns, deposited layer. The success of this project will provide further support, in terms of trained personnel as well as transferable knowledge, to the manufacturing, aerospace, and power generation industries of Ontario and throughout Canada as well. In the course of this project, a number of highly qualified personnel HQPs will be trained, including one PhD and three MASc, and nine undergraduate co-op students. These HQPs will be trained within the world-class Centre for Advanced Materials Joining, and will have a chance to closely work with Huys' engineers.

对于依赖于它们的大量行业（例如航空航天和发电行业），超金合金组件的维修技术的研究和开发至关重要。由于超级合金的性质，正常的维修操作（例如电弧焊接）实际上会通过在热影响区内的微观结构的变化来对修复的组件的机械性能造成不利影响。基于激光的覆层工艺和添加剂制造的使用已在建立和修复超级合金组件方面流行。尽管与传统焊接过程相比，基于激光的技术的使用减少了热影响区的体积，但热影响区仍然存在。拟议的项目旨在探索用电 - 带状沉积（ESD）来堆积和维修基于NI的超合金组件的使用。预计ESD的使用将导致比基于激光的过程更小的热影响区域，因此应对修复部件的机械性能不利。该项目建立在Huys Industries获得专利和专利的ESD技术的基础上，并旨在扩大其技术的适用性，例如在航空航天和发电行业中使用。同时，该项目将研究在ESD过程中发生的基本现象，并旨在利用该知识将其优化为构建厚，大于数百微米的厚度，沉积层。该项目的成功将在训练有素的人员以及可转让知识方面提供进一步的支持，并向安大略省以及整个加拿大的制造业，航空航天和发电行业提供了进一步的支持。在该项目的过程中，将培训许多高素质的人事HQP，包括一名博士学位和三个MASC，以及九个本科合作学生。这些HQP将在世界一流的高级材料加入中心进行培训，并将有机会与Huys的工程师密切合作。