Alloys-by-design: Towards optimization of compositions of nickel-based superalloys

Research output: Chapter in Book/Report/Conference proceedingChapter

Authors

Colleges, School and Institutes

External organisations

  • OXFORD UNIVERSITY

Abstract

The composition of a range of different nickel-based superalloys are isolated using theory-based computational modeling, termed 'Alloys-by-Design' methods. Each alloy has been designed with different applications in mind. A polycrystalline alloy is designed for turbine disc applications, here emphasis is placed on the composition dependence of strength. Examples of the design tradeoffs faced when increasing alloy strength are presented. Three new single crystal alloy compositions are designed. They are (i) a second generation type alloy with a reduced level of rhenium, (ii) a creep resistant alloy designed for high performance jet applications and (iii) a low cost corrosion resistant alloy designed specifically for industrial gas turbine applications. In each case the newly designed alloys have been manufactured. Design critical properties are measured and compared with modeling predictions to test the accuracy of this alloy design approach.

Details

Original languageEnglish
Title of host publicationSuperalloys 2016
Subtitle of host publicationProceedings of the 13th International Symposium on Superalloys
EditorsMark C. Hardy, Eric S. Huron, Uwe Glatzel, Brian Griffin, Beth Lewis, Cathie Rae, Venkat Seetharaman, Sammy Tin
Publication statusE-pub ahead of print - 28 Oct 2016
Event13th International Symposium on Superalloys, SUPERALLOYS 2016 - Seven Springs, United States
Duration: 11 Sep 201615 Sep 2016

Conference

Conference13th International Symposium on Superalloys, SUPERALLOYS 2016
CountryUnited States
CitySeven Springs
Period11/09/1615/09/16

Keywords

  • Alloy development, Materials genome, Nickel-superalloy