TY  - JOUR
A1  - Raffeis, Iris
A1  - Adjei-Kyeremeh, Frank
A1  - Vroomen, Uwe
A1  - Westhoff, Elmar
A1  - Bremen, Sebastian
A1  - Hohoi, Alexandru
A1  - Bührig-Polaczek, Andreas
T1  - Qualification of a Ni-Cu alloy for the laser powder bed fusion process (LPBF): Its microstructure and mechanical properties
JF  - Applied Sciences
N2  - As researchers continue to seek the expansion of the material base for additive manufacturing, there is a need to focus attention on the Ni–Cu group of alloys which conventionally has wide industrial applications. In this work, the G-NiCu30Nb casting alloy, a variant of the Monel family of alloys with Nb and high Si content is, for the first time, processed via the laser powder bed fusion process (LPBF). Being novel to the LPBF processes, optimum LPBF parameters were determined, and hardness and tensile tests were performed in as-built conditions and after heat treatment at 1000 °C. Microstructures of the as-cast and the as-built condition were compared. Highly dense samples (99.8% density) were achieved after varying hatch distance (80 µm and 140 µm) with scanning speed (550 mm/s–1500 mm/s). There was no significant difference in microhardness between varied hatch distance print sets. Microhardness of the as-built condition (247 HV0.2) exceeded the as-cast microhardness (179 HV0.2.). Tensile specimens built in vertical (V) and horizontal (H) orientations revealed degrees of anisotropy and were superior to conventionally reported figures. Post heat treatment increased ductility from 20% to 31% (V), as well as from 16% to 25% (H), while ultimate tensile strength (UTS) and yield strength (YS) were considerably reduced.
Y1  - 2020
U6  - https://doi.org/10.3390/app10103401
SN  - 2076-3417
N1  - Special Issue Materials Development by Additive Manufacturing Techniques
VL  - 10
IS  - Art. 3401
SP  - 1
EP  - 15
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Raatschen, Hans-Jürgen
A1  - Holzner, M.
A1  - Borrmann, M.
A1  - Pfrang, W.
T1  - Numerische Simulation von Umformprozessen mit dem expliziten FE-Programm UFO-3D
Y1  - 1991
N1  - Konferenz-Einzelbericht : FEM '91, International FEM-Congress, IKO Software Service, Baden Baden,  D, 18.-19.11.1991
SP  - 91
EP  - 105
ER  - 
TY  - JOUR
A1  - Raatschen, Hans-Jürgen
T1  - Ingenieurstudium Hundert Jahre : von der Königlichen Höheren Maschinenbauschule Aachen zu den Ingenieurfachbereichen der Fachhochschule
JF  - Fachblatt
Y1  - 2003
VL  - 2003
IS  - 1
SP  - 28
EP  - 29
ER  - 
TY  - JOUR
A1  - Raatschen, Hans-Jürgen
T1  - Fokussierung von Spannungswellen in einer krummlinig berandeten Scheibe
JF  - ZAMM : Zeitschrift für Angewandte Mathematik und Mechanik
Y1  - 1987
SN  - 1521-4001
N1  - Artikel umfasst die Seiten 11 und 12 des 30-Seiten-langen PDFs der Online-Ausgabe.
VL  - 67
IS  - 4
SP  - T230
EP  - T231
ER  - 
TY  - JOUR
A1  - Pleßmann, K. W.
A1  - Wollert, Jörg
A1  - Fiedler, Jörg
T1  - Die ganzheitliche und objektorientierte Prozesssteuerung - eine Vision?
JF  - CIM-Management : Produkte, Strategien, Entscheidungshilfen
Y1  - 1995
SN  - 0179-2679
VL  - 11
IS  - 2
SP  - 56
EP  - 60
ER  - 
TY  - JOUR
A1  - Pfeiffer, Johann
A1  - Gauchel, Joachim
A1  - Lücke, Mathias
T1  - Genauigkeitsbetrachtungen in der CIM-Prozesskette
JF  - 4th International Scientific Colloquium CAx Techniques : proceedings of the 4th international scientific colloquium, Fachhochschule Bielefeld, Germany, September 13 - 15, 1999 / [organized in co-operation between Fachhochschule Bielefeld and Rzeszów University of Technology ]. Ed. by Heinrich Ostholt
Y1  - 1999
SN  - 3-00-004379-9
N1  - CAx Techniques <4, 1999, Bielefeld>
SP  - 323
EP  - 332
PB  - [Fachhochsch.]
CY  - [Bielefeld]
ER  - 
TY  - JOUR
A1  - Pfeiffer, Johann
A1  - Gauchel, Joachim
T1  - Entwicklung und Simulation von Mechanismen zu Automatisierungszwecken / Joachim Gauchel ; Johann Pfeiffer
JF  - CAE Techniques : [proceedings of the 3st International Scientific Colloquium, Rzeszów University of Technology, Poland, September 24-27, 1997] / ed. by Kazimierz E. Oczoś
Y1  - 1997
SN  - 83-7199-004-9
N1  - CAE Techniques <3, 1997, Rzeszów> ; Politechnika Rzeszowska Imienia Ignacego Łukasiewicza
SP  - 425 ff
PB  - Politechnika Rzeszowska
CY  - Rzeszów
ER  - 
TY  - JOUR
A1  - Pfeiffer, Johann
T1  - Gute Chancen im Maschinenbau
JF  - Aachener Nachrichten / Aachener Zeitung : Sonderbeil. (2002)
Y1  - 2002
PB  - -
ER  - 
TY  - JOUR
A1  - Pfeiffer, Johann
T1  - Gute Chancen im Maschinenbau
JF  - Rheinische Post : Sonderbeil. (2002)
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Pfeiffer, Johann
T1  - Lernfeld 'Prozeßkette der Freiformflächenherstellung' : [Online-Ressource] / ... in Zus.-Arb. mit Johann Pfeiffer
JF  - NUMAS - Ein Lehr- und Lernsystem zur Numerischen Mathematik und Statistik : [Online-Ressource] / Projektleitung: Gisela Engeln Müllges
Y1  - 2003
N1  - Die Online-Lerneinheit ist erst nach Registrierung im Lernsystem (http://www.numas.de) einsehbar.
Stand der Aktualisierung von NUMAS®: 21.05.2004.
PB  - NUMAS.de
CY  - Aachen
ER  -