scholarly journals Fabrication of Copper Alloys as Conductive Materials via Laser Beam Powder Bed Fusion

2021 ◽  
Vol 10 (4) ◽  
pp. 265-269
Author(s):  
Ryosuke OZASA ◽  
Mridul GUPTA ◽  
Takuya ISHIMOTO ◽  
Aira MATSUGAKI ◽  
Tetsuji KUSE ◽  
...  
Keyword(s):  
Laser Beam ◽  
Copper Alloys ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Conductive Materials

scholarly journals Carbon Particle In-Situ Alloying of the Case-Hardening Steel 16MnCr5 in Laser Powder Bed Fusion

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 896
Author(s):  
Matthias Schmitt ◽  
Albin Gottwalt ◽  
Jakob Winkler ◽  
Thomas Tobie ◽  
Georg Schlick ◽  
...  
Keyword(s):  
Laser Beam ◽  
Mechanical Strength ◽  
Carbon Content ◽  
Metal Powder ◽  
Case Hardening ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Carbon Particles ◽  
Case Hardening Steel

The carbon content of steel affects many of its essential properties, e.g., hardness and mechanical strength. In the powder bed fusion process of metals using a laser beam (PBF-LB/M), usually, pre-alloyed metal powder is solidified layer-by-layer using a laser beam to create parts. A reduction of the carbon content in steels is observed during this process. This study examines adding carbon particles to the metal powder and in situ alloying in the PBF-LB/M process as a countermeasure. Suitable carbon particles are selected and their effect on the particle size distribution and homogeneity of the mixtures is analysed. The workability in PBF-LB is then shown. This is followed by an evaluation of the resulting mechanical properties (hardness and mechanical strength) and microstructure in the as-built state and the state after heat treatment. Furthermore, potential use cases like multi-material or functionally graded parts are discussed.

Establishing Specimen Property to Part Performance Relationships for Laser Beam Powder Bed Fusion Additive Manufacturing

2021 ◽  
pp. 106384
Author(s):  
Arash Soltani-Tehrani ◽  
Rakish Shrestha ◽  
Nam Phan ◽  
Mohsen Seifi ◽  
Nima Shamsaei
Keyword(s):  
Additive Manufacturing ◽  
Laser Beam ◽  
Powder Bed Fusion ◽  
Powder Bed

Improvement of Build Speed and Quality of H13 Tool Steel Processed by Laser-Beam Powder Bed Fusion with a High-Power Laser

2021 ◽  
Vol 68 (10) ◽  
pp. 415-421
Author(s):  
Takashi MIZOGUCHI ◽  
Takaya NAGAHAMA ◽  
Makoto TANO ◽  
Shigeru MATSUNAGA ◽  
Takayuki YOSHIMI ◽  
...  
Keyword(s):  
Laser Beam ◽  
Tool Steel ◽  
High Power ◽  
Powder Bed Fusion ◽  
High Power Laser ◽  
Power Laser ◽  
Powder Bed ◽  
H13 Tool Steel

scholarly journals Roadmap for Additive Manufacturing of Haynes® 282® Superalloy by Laser Beam Powder Bed Fusion (PBF-LB) Technology

2020 ◽  
Author(s):  
Robert Otto ◽  
Vegard Brøtan ◽  
Patricia Almeida Carvalho ◽  
Magnus Reiersen ◽  
Joachim Seland Graff ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Laser Beam ◽  
Powder Bed Fusion ◽  
Powder Bed

scholarly journals PBF-LB Process-Induced Regular Cavities for Lightweight AlSi10Mg Structures

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6665
Author(s):  
Victor Lubkowitz ◽  
Jonas Alber ◽  
Frederik Zanger
Keyword(s):  
Laser Beam ◽  
Pore Formation ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Lack Of Fusion ◽  
Keyhole Effect ◽  
Pore Types ◽  
Induced Defects

In powder bed fusion with laser beam (PBF-LB), two process-induced defects by pore formation are known: local spherical pores by the keyhole effect and geometrically undefined pores caused by lack of fusion. Both pore types are heterogeneously distributed and can be used for lightweight or damping design applications. The achievable porosity is limited to around 13%. This article presents a novel process-controlled method enabling the targeted and reproducible manufacturing of solid parts with regularly distributed cavities, currently up to 60% porosity in AlSi10Mg, using the balling effect. This eliminates the need for time-consuming digital pre-processing work.

scholarly journals Influence of process gas during powder bed fusion with laser beam of Zr-based bulk metallic glasses

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 205-210
Author(s):  
Jan Wegner ◽  
Maximilian Frey ◽  
Stefan Kleszczynski ◽  
Ralf Busch ◽  
Gerd Witt
Keyword(s):  
Laser Beam ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Process Gas

scholarly journals Microstructural control in metal laser powder bed fusion additive manufacturing using laser beam shaping strategy

2020 ◽  
Vol 184 ◽  
pp. 284-305 ◽  
Author(s):  
Rongpei Shi ◽  
Saad A. Khairallah ◽  
Tien T. Roehling ◽  
Tae Wook Heo ◽  
Joseph T. McKeown ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Laser Beam ◽  
Beam Shaping ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Laser Beam Shaping ◽  
Powder Bed ◽  
Microstructural Control
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