Microstructure of the Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting

Ramsperger M, Singer R, Körner C (2016)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science ASM International

Publisher: ASM International

Book Volume: 47

Pages Range: 1469-1480

Journal Issue: 3

DOI: 10.1007/s11661-015-3300-y

Abstract

Powder bed-based additive manufacturing (AM) processes are characterized by very high-temperature gradients and solidification rates. These conditions lead to microstructures orders of magnitude smaller than in conventional casting processes. Especially in the field of high performance alloys, like nickel-base superalloys, this opens new opportunities for homogenization and alloy development. Nevertheless, the high susceptibility to cracking of precipitation-hardenable superalloys is a challenge for AM. In this study, electron beam-based AM is used to fabricate samples from gas-atomized pre-alloyed CMSX-4 powder. The influence of the processing strategy on crack formation is investigated. The samples are characterized by optical and SEM microscopy and analyzed by microprobe analysis. Differential scanning calorimetry is used to demonstrate the effect of the fine microstructure on characteristic temperatures. In addition, in situ heat treatment effects are investigated.

Authors with CRIS profile

Markus Ramsperger Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Robert Singer Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM)

Related research project(s)

Activity SEBM of special alloys Jan. 1, 2000 - Jan. 1, 2003 Activity Development of process strategies Jan. 1, 2000 - Jan. 1, 2003

How to cite

APA:

Ramsperger, M., Singer, R., & Körner, C. (2016). Microstructure of the Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 47(3), 1469-1480. https://doi.org/10.1007/s11661-015-3300-y

MLA:

Ramsperger, Markus, Robert Singer, and Carolin Körner. "Microstructure of the Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting." Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 47.3 (2016): 1469-1480.

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