Quantification of Microstructural Heterogeneities in Additively Manufactured and Heat-Treated Haynes 282

Avantika Gupta; Sriram Vijayan; Joerg Jinschek; Carolin Fink

Abstract

Haynes-282 is a gamma prime (γ’) strengthened Ni-based superalloy with excellent high temperature mechanical properties for applications, e.g., in industrial gas turbine engines. Excellent thermal stability ( ̴760 ⁰C) and weldability make this alloy a promising candidate for the manufacturing of near-net shaped parts via electron beam melting (EBM) powder bed fusion (PBF) processes. To enable industrial application of EBM-deposited Haynes-282 components, a systematic understanding of its process-structure-property space is required.

In this study, we used a multi-scale characterization approach to evaluate the impact of variations in EBM process parameters such as scan velocity, build height and, column thickness on size and morphology evolution of γ’, matrix gamma (γ) grains, and carbides in EBM Haynes-282. Microhardness testing was used to understand the effect of microstructural variations on mechanical properties. Further, the effect of post-process heat treatment (testing both a two-step and a one-step ageing process) on microstructure and mechanical hardness was evaluated.

Original language	English
Publication date	2023
Number of pages	1
Publication status	Published - 2023
Event	TMS 2023 Annual Meeting & Exhibition - San Diego, United States Duration: 19 Mar 2023 → 23 Mar 2023

Conference

Conference	TMS 2023 Annual Meeting & Exhibition
Country/Territory	United States
City	San Diego
Period	19/03/2023 → 23/03/2023

Access to Document

FulltextAccepted author manuscript, 406 KB

OpenUrl availability

Full text

Cite this

@conference{8c881b7018664d70b555bf3e232178c0,

title = "Quantification of Microstructural Heterogeneities in Additively Manufactured and Heat-Treated Haynes 282",

abstract = "Haynes-282 is a gamma prime (γ{\textquoteright}) strengthened Ni-based superalloy with excellent high temperature mechanical properties for applications, e.g., in industrial gas turbine engines. Excellent thermal stability ( ̴760 ⁰C) and weldability make this alloy a promising candidate for the manufacturing of near-net shaped parts via electron beam melting (EBM) powder bed fusion (PBF) processes. To enable industrial application of EBM-deposited Haynes-282 components, a systematic understanding of its process-structure-property space is required.In this study, we used a multi-scale characterization approach to evaluate the impact of variations in EBM process parameters such as scan velocity, build height and, column thickness on size and morphology evolution of γ{\textquoteright}, matrix gamma (γ) grains, and carbides in EBM Haynes-282. Microhardness testing was used to understand the effect of microstructural variations on mechanical properties. Further, the effect of post-process heat treatment (testing both a two-step and a one-step ageing process) on microstructure and mechanical hardness was evaluated.",

author = "Avantika Gupta and Sriram Vijayan and Joerg Jinschek and Carolin Fink",

year = "2023",

language = "English",

note = "TMS 2023 Annual Meeting & Exhibition, TMS2023 ; Conference date: 19-03-2023 Through 23-03-2023",

}

Quantification of Microstructural Heterogeneities in Additively Manufactured and Heat-Treated Haynes 282. / Gupta, Avantika; Vijayan, Sriram; Jinschek, Joerg et al.
2023. Abstract from TMS 2023 Annual Meeting & Exhibition, San Diego, California, United States.

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

TY - ABST

T1 - Quantification of Microstructural Heterogeneities in Additively Manufactured and Heat-Treated Haynes 282

AU - Gupta, Avantika

AU - Vijayan, Sriram

AU - Jinschek, Joerg

AU - Fink, Carolin

PY - 2023

Y1 - 2023

N2 - Haynes-282 is a gamma prime (γ’) strengthened Ni-based superalloy with excellent high temperature mechanical properties for applications, e.g., in industrial gas turbine engines. Excellent thermal stability ( ̴760 ⁰C) and weldability make this alloy a promising candidate for the manufacturing of near-net shaped parts via electron beam melting (EBM) powder bed fusion (PBF) processes. To enable industrial application of EBM-deposited Haynes-282 components, a systematic understanding of its process-structure-property space is required.In this study, we used a multi-scale characterization approach to evaluate the impact of variations in EBM process parameters such as scan velocity, build height and, column thickness on size and morphology evolution of γ’, matrix gamma (γ) grains, and carbides in EBM Haynes-282. Microhardness testing was used to understand the effect of microstructural variations on mechanical properties. Further, the effect of post-process heat treatment (testing both a two-step and a one-step ageing process) on microstructure and mechanical hardness was evaluated.

AB - Haynes-282 is a gamma prime (γ’) strengthened Ni-based superalloy with excellent high temperature mechanical properties for applications, e.g., in industrial gas turbine engines. Excellent thermal stability ( ̴760 ⁰C) and weldability make this alloy a promising candidate for the manufacturing of near-net shaped parts via electron beam melting (EBM) powder bed fusion (PBF) processes. To enable industrial application of EBM-deposited Haynes-282 components, a systematic understanding of its process-structure-property space is required.In this study, we used a multi-scale characterization approach to evaluate the impact of variations in EBM process parameters such as scan velocity, build height and, column thickness on size and morphology evolution of γ’, matrix gamma (γ) grains, and carbides in EBM Haynes-282. Microhardness testing was used to understand the effect of microstructural variations on mechanical properties. Further, the effect of post-process heat treatment (testing both a two-step and a one-step ageing process) on microstructure and mechanical hardness was evaluated.

M3 - Conference abstract for conference

T2 - TMS 2023 Annual Meeting & Exhibition

Y2 - 19 March 2023 through 23 March 2023

ER -