TY - GEN
T1 - Scanning laser epitaxy - A novel metal additive manufacturing process developed for gas turbine hot-section alloys
AU - Basak, Amrita
AU - Acharya, Ranadip
AU - Bansal, Rohan
AU - Das, Suman
N1 - Publisher Copyright:
© Copyright 2015 MS&T15.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84961139339
T3 - Materials Science and Technology Conference and Exhibition 2015, MS and T 2015
SP - 1697
EP - 1704
BT - Materials Science and Technology Conference and Exhibition 2015, MS and T 2015
PB - Association for Iron and Steel Technology, AISTECH
T2 - Materials Science and Technology Conference and Exhibition 2015, MS and T 2015
Y2 - 4 October 2015 through 8 October 2015
ER -