scholarly journals Processing of X65MoCrWV3‐2 Cold Work Tool Steel by Laser Powder Bed Fusion

2019 ◽  
Vol 91 (5) ◽  
pp. 1900445 ◽  
Author(s):  
Johannes Boes ◽  
Arne Röttger ◽  
Werner Theisen
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Cold Work Tool Steel

scholarly journals Bonding Integrity of Hybrid 18Ni300-17-4 PH Steel Using The Laser Powder Bed Fusion Process For The Fabrication of Plastic Injection Mould Inserts

2021 ◽  
Author(s):  
Yuk Lun Simon Chan ◽  
Olaf Diegel ◽  
Xun Xu
Keyword(s):  
Tool Steel ◽  
High Performance ◽  
High Volume ◽  
Successful Outcome ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Injection Mould ◽  
Powder Bed ◽  
Plastic Injection Mould ◽  
Plastic Injection

Abstract Laser powder bed fusion (LPBF) is a metal additive manufacturing (AM) process for fabricating high-performance functional parts and tools in various metallic alloys, such as titanium, aluminium and tool steels. The process can produce geometrically complex features such as conformal cooling channels (CCC) in plastic injection mould inserts to improve cooling efficiency. A recent attempt using a hybrid-build LPBF AM technique to fabricate aluminium mould inserts with CCC attained a substantial reduction in processing time, making it an attractive alternative method to the mould-making industry. Also, the successful bonding of aluminium powder with wrought aluminium alloys proved the practicability of this concept. This study further investigates whether a similarly successful outcome could apply to tool steel since tool steel is the preferred material for constructing high-grade high-volume plastic injection moulds. In this investigation, hybrid 18Ni300 powder-wrought 17-4 PH steel parts were additively fabricated using the hybrid-build LPBF technique, followed by various post-build heat treatments. The mechanical and metallurgical properties of the samples’ bonded interface were examined. Microstructure analysis revealed homogenous powder-substrate fusion across the interface region. Results from tensile tests confirmed strong powder-substrate bonding as none of the tensile fractures occurred at the interface. A direct post-build one-hour age-hardening treatment achieved the best combination of hardness, tensile strength, and ductility. The overall result demonstrates that hybrid-built 18Ni300-17-4 PH steel can be a material choice for manufacturing durable and high-performance injection mould inserts for high-volume production.

scholarly journals Evaluation of post-treatments of novel hot-work tool steel manufactured by laser powder bed fusion for aluminum die casting applications

2021 ◽  
Vol 800 ◽  
pp. 140305
Author(s):  
A.M. Vilardell ◽  
S.B. Hosseini ◽  
M. Åsberg ◽  
A. Dahl-Jendelin ◽  
P. Krakhmalev ◽  
...  
Keyword(s):  
Tool Steel ◽  
Die Casting ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hot Work Tool Steel

scholarly journals Dual-Laser PBF-LB Processing of a High-Performance Maraging Tool Steel FeNiCoMoVTiAl

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4251
Author(s):  
Gregor Graf ◽  
Niki Nouri ◽  
Stefan Dietrich ◽  
Frederik Zanger ◽  
Volker Schulze
Keyword(s):  
Tool Steel ◽  
High Performance ◽  
Laser Scanning ◽  
Calibration Procedure ◽  
Functionally Graded ◽  
Material Structure ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Dual Laser

As part of an international research project (HiPTSLAM), the development and holistic processing of high-performance tool steels for AM is a promising topic regarding the acceptance of the laser powder bed fusion (PBF-LB) technology for functionally optimized die, forming and cutting tools. In a previous work, the newly developed maraging tool steel FeNiCoMoVTiAl was qualified to be processed by laser powder bed fusion (PBF-LB) with a material density of more than 99.9% using a suitable parameter set. To exploit further optimization potential, the influence of dual-laser processing strategies on the material structure and the resulting mechanical properties was investigated. After an initial calibration procedure, the build data were modified so that both lasers could be aligned to the same scanning track with a defined offset. A variation of the laser-based post-heating parameters enabled specific in-situ modifications of the thermal gradients compared to standard single-laser scanning strategies, leading to corresponding property changes in the produced material structure. An increase in microhardness of up to 15% was thus obtained from 411 HV up to 471 HV. The results of the investigation can be used to derive cross-material optimization potential to produce functionally graded high-performance components on PBF-LB systems with synchronized multi-laser technology.

scholarly journals Cracking mechanism in a laser powder bed fused cold-work tool steel: The role of residual stresses, microstructure and local elemental concentrations

2021 ◽  
pp. 117570
Author(s):  
Jan Platl ◽  
Sabine Bodner ◽  
Christina Hofer ◽  
Andreas Landefeld ◽  
Harald Leitner ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Tool Steel ◽  
Cold Work ◽  
Powder Bed ◽  
Elemental Concentrations ◽  
Cracking Mechanism ◽  
Cold Work Tool Steel

Influence of powder nitriding on the mechanical behavior of laser-powder bed fusion processed tool steel X30CrMo7-2

2020 ◽  
Vol 62 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Felix Stern ◽  
Felix Grabienski ◽  
Frank Walther ◽  
Johannes Boes ◽  
Arne Röttger ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Tool Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals Hot Work Tool Steel Processed by Laser Powder Bed Fusion: A Review on Most Relevant Influencing Factors

2021 ◽  
Author(s):  
Liang Wu ◽  
Das Suvajeet ◽  
Witalij Gridin ◽  
Stefan Leuders ◽  
Moritz Kahlert ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Tool Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hot Work Tool Steel

scholarly journals Part deflection and residual stresses in laser powder bed fusion of H13 tool steel

2021 ◽  
pp. 109659
Author(s):  
Morteza Narvan ◽  
Ali Ghasemi ◽  
Eskandar Fereiduni ◽  
Stephen Kendrish ◽  
Mohamed Elbestawi
Keyword(s):  
Residual Stresses ◽  
Tool Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
H13 Tool Steel
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