Qualitative evaluation of failure mechanisms of aluminium 6061-T6 cold spray repairs

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-07 DOI:10.1016/j.engfailanal.2025.109581

Sudip Kundu, Konstantinos Stamoulis

引用次数: 0

Abstract

Cold spray is an emerging technology that shows great promise for the repair of civil aircraft components. However, certification of such repairs requires a comprehensive evaluation of repair performance, including a detailed assessment of repair strength and the associated failure mechanisms. The present research compared the failure mechanisms of cold-spray repaired specimens manufactured from aluminium alloy 6061-T6, produced using either a high-pressure or a low-pressure cold spray system, in tensile tests. Depending on the manufacturing process used, different failure mechanisms were observed, including cohesive failure of the deposit and failure of the deposit-substrate interface. The study suggests that failure in cold spray repair is driven by competing mechanisms, with the dominant mode influenced by both the applied load and the processing parameters, as well as the characteristics of the deposited material.

查看原文本刊更多论文

6061-T6铝冷喷涂修复失效机理定性评价

冷喷技术是一项新兴技术，在修复民用飞机部件方面大有可为。然而，此类修复的认证需要对修复性能进行全面评估，包括对修复强度和相关失效机制的详细评估。本研究比较了使用高压或低压冷喷系统制造的铝合金 6061-T6 冷喷修复试样在拉伸试验中的失效机理。根据所用制造工艺的不同，观察到了不同的失效机制，包括沉积物的内聚失效和沉积物-基材界面的失效。研究表明，冷喷修复中的失效是由相互竞争的机制驱动的，主要模式受施加载荷和加工参数以及沉积材料特性的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.