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Fatigue properties of structural nanometal coatings for gas turbine engines

燃气轮机结构纳米金属涂层的疲劳性能

基本信息

批准号：
520937-2017
负责人：
Steeves, Craig
金额：
$ 5.72万
依托单位：
University of Toronto
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=665882
关键词：
Fatigue properties structural nanometal coatings

项目摘要

Nanocrystalline metals possess exceptionally high strength, up to six times conventional versions of the same materials, and can be electrodeposited as coatings onto virtually any surface. This provides high strength, wear resistance, corrosion protection, impact resistance and reduced environmental impact. One application wherein such coatings would be useful is in the fan blades of gas turbine engine used to power aircraft. However, a lack of data and analysis on the fatigue behaviour of nanocrystalline metal coatings on metallic substrates restricts their use in aircraft engines. The University of Toronto Institute for Aerospace Studies and Pratt & Whitney Canada, a major international manufacturer of gas turbine engines, are creating a research team to overcome this limitation. This project will combine fatigue testing of coated materials with digital strain mapping techniques to develop a much better understanding of the initiation and growth of fatigue cracks in nanometal coatings. As well, the effect of impact damage on the fatigue life of nanometal coatings will be addressed. The goal is to illuminate the credits or deficits in fatigue life caused by the presence of coatings on metallic substrates. This will enable engineers at Pratt & Whitney Canada to design lighter, more**environmentally friendly components for gas turbine engines.

纳米晶体金属具有极高的强度，可达相同材料的常规版本的六倍，并且可以作为涂层电沉积到几乎任何表面上。这提供了高强度、耐磨性、腐蚀保护、抗冲击性和降低的环境影响。其中这种涂层将是有用的一种应用是用于为飞行器提供动力的燃气涡轮机发动机的风扇叶片。然而，缺乏数据和分析的疲劳行为的纳米晶金属涂层的金属基板上限制了它们在航空发动机中的使用。多伦多大学航空航天研究所和国际主要燃气涡轮机制造商普惠加拿大公司正在创建一个研究小组来克服这一限制。这个项目将结合联合收割机的涂层材料的疲劳测试与数字应变映射技术，开发一个更好地了解纳米金属涂层的疲劳裂纹的萌生和增长。此外，冲击损伤对纳米金属涂层疲劳寿命的影响将得到解决。目的是阐明金属基体上涂层的存在所引起的疲劳寿命的信用或赤字。这将使加拿大普惠公司的工程师能够为燃气涡轮机发动机设计更轻、更环保的部件。