TY  - JOUR
A1  - Dobbelstein, Henrik
A1  - George, Easo P
A1  - Gurevich, Evgeny L
A1  - Kostka, Aleksander
A1  - Ostendorf, Andreas
A1  - Laplanche, Guillaume
T1  - Laser metal deposition of refractory high-entropy alloys for high-throughput synthesis and structure-property characterization
JF  - International Journal of Extreme Manufacturing
N2  - Progress in materials development is often paced by the time required to produce and evaluate a large number of alloys with different chemical compositions. This applies especially to refractory high-entropy alloys (RHEAs), which are difficult to synthesize and process by conventional methods. To evaluate a possible way to accelerate the process, high-throughput laser metal deposition was used in this work to prepare a quinary RHEA, TiZrNbHfTa, as well as its quaternary and ternary subsystems by in-situ alloying of elemental powders. Compositionally graded variants of the quinary RHEA were also analyzed. Our results show that the influence of various parameters such as powder shape and purity, alloy composition, and especially the solidification range, on the processability, microstructure, porosity, and mechanical properties can be investigated rapidly. The strength of these alloys was mainly affected by the oxygen and nitrogen contents of the starting powders, while substitutional solid solution strengthening played a minor role.
Y1  - 2021
UR  - https://iopscience.iop.org/article/10.1088/2631-7990/abcca8/meta
VL  - 3
IS  - 1
SP  - 015201
EP  - 015201
PB  - IOP Publishing
ER  - 
TY  - JOUR
A1  - Dobbelstein, Henrik
A1  - Thiele, Magnus
A1  - Gurevich, Evgeny L.
A1  - George, Easo P.
A1  - Ostendorf, Andreas
T1  - Direct Metal Deposition of Refractory High Entropy Alloy MoNbTaW
JF  - Physics Procedia
Y1  - 2016
VL  - 83
SP  - 624
EP  - 633
ER  - 
TY  - JOUR
A1  - Dobbelstein, Henrik
A1  - Gurevich, Evgeny L.
A1  - George, Easo P.
A1  - Ostendorf, Andreas
A1  - Laplanche, Guillaume
T1  - Laser metal deposition of a refractory TiZrNbHfTa high-entropy alloy
JF  - Additive Manufacturing
KW  - Additive manufacturing
KW  - High-entropy alloy
KW  - Laser metal deposition
KW  - Powder blend
KW  - Refractory
Y1  - 2018
U6  - http://dx.doi.org/10.1016/j.addma.2018.10.008
SN  - 2214-8604
VL  - 24
SP  - 386
EP  - 390
PB  - Fachhochschule Münster - University of Applied Sciences
ER  - 
TY  - JOUR
A1  - Dobbelstein, Henrik
A1  - Gurevich, Evgeny L.
A1  - George, Easo P.
A1  - Ostendorf, Andreas
A1  - Laplanche, Guillaume
T1  - Laser metal deposition of compositionally graded TiZrNbTa refractory high-entropy alloys using elemental powder blends
JF  - Additive Manufacturing
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.addma.2018.10.042
SN  - 2214-8604
VL  - 25
SP  - 252
EP  - 262
ER  -