Thermodynamics and kinetics of precipitation and austenite reversion during aging of Ti-free grade 300 maraging steel manufactured by laser powder bed fusion (LPBF)

2021 ◽  
Vol 56 (33) ◽  
pp. 18722-18739
Author(s):  
Rangasayee Kannan ◽  
Peeyush Nandwana
Keyword(s):  
Maraging Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of Precipitation ◽  
Kinetics Of

scholarly journals A Review of Factors Affecting the Mechanical Properties of Maraging Steel 300 Fabricated via Laser Powder Bed Fusion

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1273 ◽  
Author(s):  
Barry Mooney ◽  
Kyriakos Kourousis
Keyword(s):  
Mechanical Properties ◽  
Maraging Steel ◽  
Processing Parameters ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Factors Affecting ◽  
Powder Bed ◽  
Porosity Defects ◽  
Research Findings ◽  
Microstructure Density

Maraging steel is an engineering alloy which has been widely employed in metal additive manufacturing. This paper examines manufacturing and post-processing factors affecting the properties of maraging steel fabricated via laser powder bed fusion (L-PBF). It covers the review of published research findings on how powder quality feedstock, processing parameters, laser scan strategy, build orientation and heat treatment can influence the microstructure, density and porosity, defects and residual stresses developed on L-PBF maraging steel, with a focus on the maraging steel 300 alloy. This review offers an evaluation of the resulting mechanical properties of the as-built and heat-treated maraging steel 300, with a focus on anisotropic characteristics. Possible directions for further research are also identified.

scholarly journals Influence of metal powder cross-contaminations on part quality in Laser Powder Bed Fusion: copper alloy particles in maraging steel feedstock

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 167-172
Author(s):  
Max Horn ◽  
Lukas Langer ◽  
Mario Schafnitzel ◽  
Simone Dietrich ◽  
Georg Schlick ◽  
...  
Keyword(s):  
Metal Powder ◽  
Maraging Steel ◽  
Copper Alloy ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Part Quality ◽  
Alloy Particles

scholarly journals HEAT TREATMENT EFFECT ON MARAGING STEEL MANUFACTURED BY LASER POWDER BED FUSION TECHNOLOGY: MICROSTRUCTURE AND MECHANICAL PROPERTIES

2021 ◽  
Vol 27 (3) ◽  
pp. 122-126
Author(s):  
Giulia Stornelli ◽  
Damiano Gaggia ◽  
Marco Rallini ◽  
Andrea Di Schino
Keyword(s):  
Heat Treatment ◽  
Maraging Steel ◽  
Treatment Effect ◽  
Annealing Treatment ◽  
Ageing Temperature ◽  
Powder Bed Fusion ◽  
Solution Annealing ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Hardening Treatment

Laser Powder Bed Fusion (L-PBF) is a widespread additive manufacturing technology in industrial applications, for metal components manufacturing. Maraging steel is a special class of Fe-Ni alloys, typically used in the aerospace and tooling sectors due to their good combination of mechanical strength and toughness. This work analyses the heat treatment effect on the microstructure and hardness value of 300-grade maraging steel manufactured by the L-PBF process. The considered heat treatment consists of a solution annealing treatment followed by quenching and ageing hardening treatment. The effect of ageing temperature is reported, in a wide temperature range. Results show that solution annealing treatment fully dissolves the solidification structure caused by the L-PBF process. Moreover, the ageing hardening treatment has a significant impact on the hardness, hence on strength, of L-PBF maraging steel. The optimal ageing conditions for the L-PBF maraging steel are identified and reported: in particular, results show that the hardness of 583 HV is achieved following ageing treatment at 490 °C for 6 hours. A higher treatment temperature leads to over-ageing resulting in a decrease of hardness. Conversely, an excessive ageing time does not seem to affect the hardness value, for the ageing temperature of 490 °C.

Tailoring the nanostructure of laser powder bed fusion additively manufactured maraging steel

2020 ◽  
Vol 36 ◽  
pp. 101561
Author(s):  
T. Allam ◽  
K.G. Pradeep ◽  
P. Köhnen ◽  
A. Marshal ◽  
J.H. Schleifenbaum ◽  
...  
Keyword(s):  
Maraging Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

Additive manufacturing of maraging steel-H13 bimetals using laser powder bed fusion technique

2019 ◽  
Vol 29 ◽  
pp. 100797 ◽  
Author(s):  
Sajad Shakerin ◽  
Amir Hadadzadeh ◽  
Babak Shalchi Amirkhiz ◽  
Seyedamirreza Shamsdini ◽  
Jian Li ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Maraging Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Fusion Technique ◽  
Powder Bed

scholarly journals Contribution of cellulosic fibre filter on atmosphere moisture content in laser powder bed fusion additive manufacturing

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
A. Das ◽  
J. A. Muñiz-Lerma ◽  
E. R. L. Espiritu ◽  
A. Nommeots-Nomm ◽  
K. Waters ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Experimental Approach ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Cellulosic Materials ◽  
Particulate Filters ◽  
Moisture Desorption ◽  
Kinetics Of ◽  
Kinetics Of Sorption

Abstract Cellulosic materials are commonly used to manufacture the particulate filters used in laser powder bed fusion (LPBF) additive manufacturing (AM) equipment. An experimental approach has been used to calculate the moisture quantity and kinetics of sorption in a cellulosic filter at varying relative humidity (RH) levels. A prediction of the amount of moisture which can be theoretically held within a filter during storage before its use has been obtained. Subsequently, the quantity and the rate of moisture desorption which can be transferred into the build chamber during LPBF is presented. This work highlights the importance of filter storage and conditioning prior to use in additive manufacturing processing.

Sign in / Sign up

Export Citation Format

Share Document