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

2021 ◽  
Vol 23 (7) ◽  
pp. 2170027
Author(s):  
Liang Wu ◽  
Suvajeet Das ◽  
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 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 Effect of Heat Treatment on Microstructure Evolution of X38CrMoV5-1 Hot-Work Tool Steel Produced by L-PBF

2021 ◽  
Author(s):  
Gregorio Carasi ◽  
Bosco Yu ◽  
Esther Hutten ◽  
Hatem Zurob ◽  
Riccardo Casati ◽  
...  
Keyword(s):  
Tool Steel ◽  
Manganese Oxides ◽  
Inner Core ◽  
Solidification Structure ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hot Work Tool Steel ◽  
Transmission Electron ◽  
Diffraction Patterns

AbstractThe X38CrMoV5-1 hot-work tool steel produced by laser powder bed fusion was investigated to assess the effect of quenching and tempering and direct tempering on the as-built microstructure. After the printing process, the material microstructure appeared to be characterized by a fine cellular network consisting of γ-Fe cell boundaries and α′-Fe cores. Scheil–Gulliver curves, X-ray diffraction patterns, and transmission electron microscopy images suggested a transformation of the inner core zone from δ-Fe to α′-Fe through γ-Fe. Air quenching promoted the transition of the solidification structure into a fully martensitic microstructure. Both as-built and quenched samples revealed the presence of manganese oxides and vanadium carbonitrides forming core-shell structures. After tempering, starting from as-built and from quenched condition, a dispersion of nano-sized V and Cr-rich second phases was formed in the microstructure, achieving hardness values comparable to those obtained by the same alloy produced by conventional methods. The specimen tempered directly after the laser powder bed fusion process showed a hardness peak shifted towards higher temperatures compared to the conventionally tempered sample.

Fracture Toughness of a Hot Work Tool Steel Fabricated by Laser‐Powder Bed Fusion Additive Manufacturing

2019 ◽  
Vol 91 (5) ◽  
pp. 1900449 ◽  
Author(s):  
Massimo Pellizzari ◽  
Sebastiano Furlani ◽  
Faraz Deirmina ◽  
Raveendra Siriki ◽  
Bandar AlMangour ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Additive Manufacturing ◽  
Tool Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hot Work Tool Steel

Strengthening mechanisms in a heatvar hot work tool steel fabricated by laser powder bed fusion

2021 ◽  
Vol 805 ◽  
pp. 140801
Author(s):  
Yuan Tian ◽  
Kanwal Chadha ◽  
Sang Hoon Kim ◽  
Clodualdo Aranas
Keyword(s):  
Tool Steel ◽  
Powder Bed Fusion ◽  
Strengthening Mechanisms ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hot 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.

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