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TWI Expert to Present at Thermal Spray Conference and Expo

Mon, 22 May, 2023

Our senior project leader for surface corrosion and interface engineering, Dr Satish Bhattiprolu is presenting at this year’s International Thermal Spray Conference and Exposition in Quebec, Canada.

Taking place from 22-25 May, the ITSC2023, ‘Next-Generation Thermal Spraying for Future Surfaces,’ conference is organised by the ASM International, TSS Thermal Society and DNV, and is partnered by Quebec City.

Dr Bhattiprolu will present on the topic of, ‘Exploring High-Velocity Air-Fuel and Cold Spray Deposition of Ti6Al4V for Repair Applications,’ on 24 May at 2:40 PM. His presentation will take place in 302A of the Quebec City Convention Centre, where he will highlight the collaborative research undertaken by the University West, Sweden, and TWI.

The research, which is funded by Eureka programme, is co-authored by Dr Bhattiprolu alongside TWI’s Alexandre Sabard and Professor Shrikant Joshi from the University West, Sweden, with a focus on high-velocity air-fuel and cold spray deposition of Ti6Ai4v for repair applications.

The aerospace industry is actively exploring innovative approaches to reduce aircraft weight and enhance engine efficiency through the use of lighter materials such as titanium alloys, bimetallics, and composites. However, the replacement of damaged parts made from these materials can be costly.

In addition, traditional high-temperature repair methods like electron beam patch welding, high-velocity oxy fuel spraying, and plasma spraying can have negative effects on both the substrate and the built-up materials, making repairs challenging.

As a result, there is a growing interest in investigating alternative low heat input repair technologies like high-velocity air fuel spray (HVAF) and cold spray (CS), particularly for repairing components made from temperature-sensitive materials like Ti6Al4V.

This co-authored paper that will be presented focuses on examining the impact of HVAF and CS process variables on various characteristics of Ti6Al4V coatings, including porosity, microstructure, oxygen pickup, microhardness, and wear.

The coatings also underwent heat treatment and hot isostatic pressing post-deposition within the temperature range of 800-1050°C to evaluate the effects of the treatments on the coating properties.

The findings of this study aim to provide valuable insights into identifying the most suitable repair process for Ti6Al4V parts.

By exploring these alternative repair technologies and their impact on coating characteristics, this research contributes to advancing the understanding of effective repair methods for Ti6Al4V components in the aerospace industry.

You can find out more about ITSC2023, here.


The project application no. is 75270 under completion: Eureka collaborative R&D: UK Sweden aerospace 2020.

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