Scanning laser epitaxy - A novel metal additive manufacturing process developed for gas turbine hot-section alloys

Amrita Basak, Ranadip Acharya, Rohan Bansal, Suman Das

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper focuses on the development of a novel metal powder-bed based additive manufacturing process known as Scanning Laser Epitaxy (SLE), aimed exclusively to process powders of nickel-base superalloys that are used in conventional investment casting of gas turbine hot-section components. The technical approach for the development of SLE combines multiphysics-based modeling of melting, solidification and microstructure evolution coupled with multiple modes of momentum, mass and energy transport; experimental process development involving real-time diagnosis and feedback control; and characterization of the microstructure through quantitative digital metallography. These procedures are applied for optimizing the SLE process parameters against established quality criteria. Successful application of the methodology to popular hot-section alloys such as CMSX-4, René N5, MARM-247, René 80 and IN 100 is achieved and selected results are presented in this paper.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2015, MS and T 2015
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1697-1704
Number of pages8
ISBN (Electronic)9781510813939
StatePublished - Jan 1 2015
EventMaterials Science and Technology Conference and Exhibition 2015, MS and T 2015 - Columbus, United States
Duration: Oct 4 2015Oct 8 2015

Publication series

NameMaterials Science and Technology Conference and Exhibition 2015, MS and T 2015
Volume2

Other

OtherMaterials Science and Technology Conference and Exhibition 2015, MS and T 2015
CountryUnited States
CityColumbus
Period10/4/1510/8/15

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)
  • Mechanics of Materials

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  • Cite this

    Basak, A., Acharya, R., Bansal, R., & Das, S. (2015). Scanning laser epitaxy - A novel metal additive manufacturing process developed for gas turbine hot-section alloys. In Materials Science and Technology Conference and Exhibition 2015, MS and T 2015 (pp. 1697-1704). (Materials Science and Technology Conference and Exhibition 2015, MS and T 2015; Vol. 2). Association for Iron and Steel Technology, AISTECH.