TY  - JOUR
AU  - Fischer, Torsten
AU  - Kuhn, Bernd
AU  - Rieck, Detlef
AU  - Schulz, Axel
AU  - Trieglaff, Ralf
AU  - Wilms, Markus Benjamin
TI  - Fatigue Cracking of Additively Manufactured Materials—Process and Material Perspectives
JO  - Applied Sciences
VL  - 10
IS  - 16
SN  - 2076-3417
CY  - Basel
PB  - MDPI
M1  - FZJ-2020-02770
SP  - 5556 -
PY  - 2020
AB  - Strong efforts are made internationally to optimize the process control of laser additive manufacturing processes. For this purpose, advanced detectors and monitoring software are being developed to control the quality of production. However, commercial suppliers of metal powders and part manufacturers are essentially focused on well-established materials. This article demonstrates the potential of optimized process control. Furthermore, we outline the development of a new high temperature structural steel, tailored to best utilize the advantages of additive manufacturing techniques. In this context, the impact of production-induced porosity on fatigue strength of austenitic 316L is presented. Additionally, we discuss the first conceptual results of a novel ferritic steel, named HiperFer (High Performance Ferrite), which was designed for increased fatigue strength. This ferritic, Laves phase-strengthened, stainless steel could be used for a wide range of structural components in power and (petro)chemical engineering at maximum temperatures ranging from about 580 to 650 °C. This material benefits from in situ heat treatment and counteracts process-related defects by “reactive” crack obstruction mechanisms, hampering both crack initiation and crack propagation. In this way, increased fatigue resistance and safety can be achieved.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000564696900001
DO  - DOI:10.3390/app10165556
UR  - https://juser.fz-juelich.de/record/878310
ER  -