Numerical modelling of heat treatment and subsequent machining of a superalloy turbine disc:an integrated manufacturing modelling approach

[摘要] The competitive and ever growing business of aerospace technology is constantly pushing for improvements in the engine efficiency to deliver high performance with lower costs and reduced environmental impact. Over the past 50 years, the Turbine Entry Temperature (TET) has been increased by more than 400˚C to deliver improved engine performance. This has mainly been made possible with the advancement of materials and manufacturing technologies alongside improvements in computational capabilities. With the temperature capabilities of new materials ever expanding to meet efficiency targets, use of modelling tools not only to predict material behaviour, but also to improve processing techniques are becoming common. An integrated approach to design and manufacturing is being heavily pursued especially by aerospace companies to help design and manufacture of components right first time. The main objectives of this research are twofold. Firstly, this research aims to model the development and distribution of residual stresses for two representative aerospace turbine discs made from a nickel- based superalloy U720Li after heat treatment, and predict the subsequent distortions during machining operations. Secondly, this research provides the much needed integrated manufacturing modelling approach that enables process optimisation and design of experiments based problem solving to be adapted to highly non-linear heat treatment and machining manufacturing models

[发布机构] University:University of Birmingham;Department:School of Metallurgy and Materials

[关键词] T Technology;TA Engineering (General). Civil engineering (General)