Development of new innovative materials and CNC processing routes

镍基高温合金的可加工性是一个不断发展的话题，这是由航空航天工业用改进合金的发展推动的。通过改变加工方法和合金化条件，从而产生具有更高强度和更高工作温度的新合金，从而产生微观结构。与此同时，正在部署新的近净形状和添加剂制造加工方法。本项目旨在了解这些变化对山特维克刀具性能和磨损机理的影响，作为开发下一代刀具的基础。这些材料的切削条件、变形行为和切削过程中的化学反应是新的，因此需要结合机械加工的发展来开发。虽然镍基高温合金的可加工性在学术界得到了广泛的研究，但它通常集中在通过传统加工路线生产的Inconel718。随着新合金进入主流使用，随着加工方法向近净生产和添加剂生产转变，制造商需要了解这些变化的影响。新的加工路线或材料可加工性和使用性能的根本性变化可能需要制造商改变他们开发和使用刀具的方式。山特维克科罗门特是航空航天制造业刀具领域的世界领先者。为了保持自己的地位，他们投资于研发计划，以建立自己的知识库，并确保他们在了解客户的最新工艺和材料需求方面保持领先地位。该项目由谢菲尔德大学材料科学与工程系的马丁·杰克逊教授和谢菲尔德先进制造研究中心(AMRC)的皮特·克劳福斯博士负责监督。该学生还将与山特维克科罗门特密切合作，加工镍基高温合金，并获得谢菲尔德和瑞典山特维克科罗门特研发资源的额外支持。学生还将受益于Coromants关于刀具和车削的性能和应用的知识，并能够接触到原型工具，以促进科学原理的测试。因此，预计学生将在谢菲尔德大学和AMRC花费时间，并根据需要与谢菲尔德和瑞典的山特维克一起完成该项目。

Machinability of Ni-based super alloys is a constantly evolving topic, driven by the development of improved alloys for the aerospace industry. New alloys with improved strength and that are designed for higher working temperatures are created through changes in processing methods and alloying conditions, and thereby microstructure. In parallel, new near net shape and additive manufacturing processing methods are being deployed. This project aims to understand the impact of these changes on the performance and wear mechanisms of Sandvik cutting tools, as a basis for development of the next generation of tools. The cutting conditions, deformation behaviour and chemical reactions during cutting of these materials are new, and therefore need to be developed in combination with machining developments.Whilst machinability of Ni-base superalloys is a topic that has been widely examined in academic circles, it has generally been focussed on Inconel 718 that has been produced through conventional processing routes. As new alloys have come into mainstream use, and as processing methods have changed towards near net and additive manufacture, manufacturers need to understand the implications of these changes. New processing routes or fundamental changes in materials machinability and in-service performance may necessitate manufacturers to change the way they develop and use cutting tools.Sandvik Coromant is the world leader in cutting tools to the aerospace manufacturing industry. To maintain their position they invest in Research and Development programmes to build their own knowledge base and ensure they remain ahead in understanding their customer's latest processes and materials requirements. This project is supervised by Professor Martin Jackson in the Department of Materials Science and Enginnering at the University of Sheffield, and by Dr Pete Crawforth at the Advanced Manufacturing Research Centre (AMRC) in Sheffield. The student will also work closely with Sandvik Coromant in machining Ni-based superalloys, with additional support from Sandvik Coromant R&D resources in Sheffield and Sweden. The student will also benefit from Coromants knowledge of the performance and application of cutting tools and turning, and have access to prototype tools to facilitate testing of scientific principles. It is expected that the student will therefore spend time at the Univerity of Sheffield and the AMRC, and also with Sandvik in Sheffield and Sweden as required, in delivering the project.