High Temperature High Strength Austenitic Steel Fabricated by Laser Powder-Bed Fusion

2021 ◽  
Author(s):  
Sebastien Dryepondt ◽  
Peeyush Nandwana ◽  
Kinga Unocic ◽  
Rangasayee Kannan ◽  
Patxi Fernandez Zelaia ◽  
...  
Keyword(s):  
High Temperature ◽  
Austenitic Steel ◽  
High Strength ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals Development of a Novel High-Temperature Al Alloy for Laser Powder Bed Fusion

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 35
Author(s):  
Filippo Belelli ◽  
Riccardo Casati ◽  
Martina Riccio ◽  
Alessandro Rizzi ◽  
Mevlüt Y. Kayacan ◽  
...  
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Elevated Temperatures ◽  
High Strength ◽  
Al Alloy ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Solidification Cracks ◽  
Manufacturing Technologies

The number of available materials for Laser Powder Bed Fusion is still limited due to the poor processability of many standard alloys. In particular, the lack of high-strength aluminium alloys, widely used in aerospace and automotive industries, remains a big issue for the spread of beam-based additive manufacturing technologies. In this study, a novel high-strength aluminium alloy for high temperature applications having good processability was developed. The design of the alloy was done based on the chemical composition of the widely used EN AW 2618. This Al-Cu-Mg-Ni-Fe alloy was modified with Ti and B in order to promote the formation of TiB2 nuclei in the liquid phase able to stimulate heterogeneous nucleation of grains and to decrease the hot cracking susceptibility of the material. The new Al alloy was manufactured by gas atomisation and processed by Laser Powder Bed Fusion. Samples produced with optimised parameters featured relative density of 99.91%, with no solidification cracks within their microstructure. After aging, the material revealed upper yield strength and ultimate tensile strength of 495 MPa and 460 MPa, respectively. In addition, the alloy showed tensile strength higher than wrought EN AW 2618 at elevated temperatures.

High strength WE43 microlattice structures additively manufactured by laser powder bed fusion

Materialia ◽  
2021 ◽  
Vol 16 ◽  
pp. 101067
Author(s):  
Holden Hyer ◽  
Le Zhou ◽  
Qingyang Liu ◽  
Dazhong Wu ◽  
Shutao Song ◽  
...  
Keyword(s):  
High Strength ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

Dislocation-induced ultra-high strength in a novel steel fabricated using laser powder-bed-fusion

2021 ◽  
pp. 142502
Author(s):  
Wei Li ◽  
Jikang Li ◽  
Xianyin Duan ◽  
Chuanyue He ◽  
Qingsong Wei ◽  
...  
Keyword(s):  
High Strength ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals Laser Powder Bed Fusion of a High Strength Al-Si-Zn-Mg-Cu Alloy

Metals ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 300 ◽  
Author(s):  
Alberta Aversa ◽  
Giulio Marchese ◽  
Diego Manfredi ◽  
Massimo Lorusso ◽  
Flaviana Calignano ◽  
...  
Keyword(s):  
High Strength ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Cu Alloy

Effect of defocusing distance on laser powder bed fusion of high strength Al–Cu–Mg–Mn alloy

2020 ◽  
Vol 15 (3) ◽  
pp. 325-339 ◽  
Author(s):  
Xiaojia Nie ◽  
Ze Chen ◽  
Yang Qi ◽  
Hu Zhang ◽  
Changchun Zhang ◽  
...  
Keyword(s):  
High Strength ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed
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