Publications

Quasi-industrial accelerated testing of a HIPIMS deposited nano-layered CrAlYN/CrN coating for improving hot forging die life of nitrided H13 steel

Fleming Christopher, Kerr William, Krishnamurthy Bhaskaran, Hall Liza, Sugumaran Arunprabhu, Ehiasarian Arutiun, Hovsepian Papken

Journal of Manufacturing Processes Vol 143, pp. 132-150 (2025)

https://doi.org/10.1016/j.jmapro.2025.03.106

Evaluating the potential of a nano-layered CrAlYN/CrN HIPIMS coating to improve the hot forging die life of plasma nitrided H13 steel

Fleming Christopher

International Conference on HIPIMS (2023)

AFRC-DIRF-05989-Rimstock Wheel Manufacturing Improvement Program : Process Improvement Technical Report

Krishnamurthy Bhaskaran, Paslioglu Kadir, Fleming Christopher, Roszak Jacob

(2023)

An investigation into the behaviour of selected boundary regime lubricants when cold forging steel under rolling-sliding conditions

Fleming Christopher

Tribology International Vol 157 (2021)

https://doi.org/10.1016/j.triboint.2020.106771

Oxidation‐led decomposition of hexagonal boron nitride coatings on alloy substrates at 900°C : Ti‐6Al‐4V

Fleming Christopher

Materials and Corrosion-Werkstoffe und Korrosion Vol 70, pp. 1617-1632 (2019)

https://doi.org/10.1002/maco.201810706

Oxidation‐led decomposition of hexagonal boron nitride coatings on alloy substrates at 900 °C : chromia‐formers

Fleming Christopher

Materials and Corrosion-Werkstoffe und Korrosion Vol 70, pp. 853-867 (2019)

https://doi.org/10.1002/maco.201810532

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Research Interests

The chemistry and structure of solid surfaces and coatings have been common themes throughout my research; with my interests ranging from fundamental studies of ideal substrate-adsorbate systems in ultra-high vacuum, to industrially relevant chemical and mechanical behaviour at alloy-coating-atmosphere interfaces.

Recent work has involved the high temperature oxidation of alloys and the behaviour of lubricants and release agents within manufacturing processes.

Projects

AFRC-DIRF-05989 Rimstock wheel manufacturing improvement program

Krishnamurthy, Bhaskaran (Researcher) Paslioglu, Kadir (Principal Investigator) Souza, Paul (Researcher) Sivaswamy, Giribaskar (Researcher) Waugh, Stephen (Technician) Fleming, Christopher (Researcher)

Rimstock Ltd required AFRC to support a program of work focussed on improving their current manufacturing process for alloy wheels. Ultimately this will optimise the production route to enable Rimstock to support larger wheel development and production programs in future. The primary manufacturing route considered for this project includes rotary forging of a preform which is then flow formed and machined to the final geometry. AFRC engineers visited Rimstock’s facility to walk-the-line and understand key challenges and potential areas for improvement at each production stage. Key priority areas were identified and were addressed in different constituent work packages of the project. This project was proposed as a first phase of a larger program of development which will include process optimisation, automation, and digitisation.

03-Jan-2022 - 13-Jan-2023

Alternative metallic die materials for superplastic forming

Fleming, Christopher (Co-investigator) Cochrane, Alexander (Co-investigator) Frame, Jamie Campbell (Co-investigator)

Following the selection of a number of alloys as potential die materials, their chemical, thermal and mechanical behaviour under superplastic forming conditions was tested and assessed. The report was disseminated to the AFRC core member organisations.

01-Jan-2014 - 30-Jan-2015

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