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Microstructure and Mechanical Properties of CMSX-4 Single Crystals Prepared by Additive Manufacturing

Körner, Carolin and Ramsperger, Markus and Meid, Carla and Bürger, Daniel and Wollgramm, Philipp and Bartsch, Marion and Eggeler, Gunther (2018) Microstructure and Mechanical Properties of CMSX-4 Single Crystals Prepared by Additive Manufacturing. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science, 9 (49), pp. 3781-3792. Springer. DOI: doi.org/10.1007/s11661-018-4762-5 ISBN ISSN: 1073-5623 ISSN 1073-5623

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Official URL: https://link.springer.com/article/10.1007%2Fs11661-018-4762-5

Abstract

Currently, additive manufacturing (AM) experiences significant attention in nearly all industrial sectors. AM is already well established in fields such as medicine or spare part production. Nevertheless, processing of high-performance nickel-based superalloys and especially single crystalline alloys such as CMSX-4 is challenging due to the difficulty of intense crack formation. Selective electron beam melting (SEBM) takes place at high process temperatures (~ 1000 C) and under vacuum conditions. Current work has demonstrated processing of CMSX-4 without crack formation. In addition, by using appropriate AM scan strategies, even single crystals (SX SEBM CMSX-4) develop directly from the powder bed. In this contribution, we investigate the mechanical properties of SX SEBM CMSX-4 prepared by SEBM in the as-built condition and after heat treatment. The focus is on hardness, strength, low cycle fatigue, and creep properties. These properties are compared with conventional cast and heat-treated material.

Item URL in elib:https://elib.dlr.de/122957/
Document Type:Article
Title:Microstructure and Mechanical Properties of CMSX-4 Single Crystals Prepared by Additive Manufacturing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Körner, CarolinLehrstuhl für Werkstoffwissenschaften, Friedrich-Alexander-Universität Erlangen-NürnbergUNSPECIFIED
Ramsperger, MarkusLehrstuhl für Werkstoffwissenschaften, Friedrich-Alexander-Universität Erlangen-NürnbergUNSPECIFIED
Meid, CarlaCarla.Meid (at) dlr.deUNSPECIFIED
Bürger, DanielInstitute for Materials, Ruhr-Universität BochumUNSPECIFIED
Wollgramm, PhilippInstitute for Materials, Ruhr-Universität BochumUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.dehttps://orcid.org/0000-0002-3952-2928
Eggeler, GuntherRuhr-Universität BochumUNSPECIFIED
Date:10 July 2018
Journal or Publication Title:Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
Refereed publication:Yes
Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:9
DOI :doi.org/10.1007/s11661-018-4762-5
Page Range:pp. 3781-3792
Publisher:Springer
Series Name:TOPICAL COLLECTION: SUPERALLOYS AND THEIR APPLICATIONS
ISSN:1073-5623
ISBN:ISSN: 1073-5623
Status:Published
Keywords:Additive manufacturing, single crystal, super alloy, mechanical properties, high temperature fatigue
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:20 Nov 2018 09:00
Last Modified:30 May 2019 22:06

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