Results 71 to 80 of about 325,469 (173)

In situ observation and reduction of hot-cracks in laser additive manufacturing

Communications Materials
Cracking during Laser Additive Manufacturing is a problem for many higher-strength aluminium alloys, including AA6061. Here, we used a pulsed laser with ramp-down power modulation to improve the cracking resistance by about 50% compared to the use of a ...
Yunhui Chen, Duyao Zhang, Patrick O’Toole, Dong Qiu, Marc Seibold, Klaus. Schricker, Jean-Pierre Bergmann, Alexander Rack, Mark Easton   +8 more
doaj   +1 more source

The Effect of Post-Heat Treatments on Microstructure and Mechanical Properties of a L-PBF CoCrNi–AlTi Medium-Entropy Alloy

Metals
A CoCrNi-AlTi medium-entropy alloy was fabricated via laser powder bed fusion (L-PBF), and its microstructural evolution and mechanical response during aging at 500–900 °C for 1 h were systematically investigated.
Xiaojing Xiong, Xiaodong Nong, Libin Yu, Xianzhao Meng, Chunjia Mo, Yunjie Bi, Hui Ding   +6 more
doaj   +1 more source

Electron Beam Additive Manufacturing of SS316L with a Stochastic Scan Strategy: Microstructure, Texture Evolution, and Mechanical Properties

Metals
This study examines the microstructure, crystallographic texture evolution, and mechanical properties of stainless steel 316L fabricated through electron beam melting using a stochastic scan strategy at a preheat temperature of 1123 K.
K. N. Chaithanya Kumar, Shashank Sharma, Madhavan Radhakrishnan, Rohit Randhavan, Krishna Kamlesh Verma, Shelden Dowden, Zane Weldon Hughes, Rajarshi Banerjee, Narendra B. Dahotre   +8 more
doaj   +1 more source

Powder Bed Fusion Additive Manufacturing of JBK-75 [PDF]

JBK-75 is an iron-nickel derivative alloy of A-286 that has been of interest to NASAs propulsion community for use in fuel injectors and other components that are used in hot, corrosive environments.
Gradl, P. R., Jones, Z. C.
core   +1 more source

Influence of AlSi10Mg Thermophysical Properties on the Melt Pool Morphology During High-Fidelity Simulation of Laser Powder Bed Fusion

Modelling
Laser powder bed fusion (LPBF) is an advanced additive manufacturing method, but its productivity is relatively low, which limits its application.
Ivan A. Pelevin, Maria V. Bogdanova, Andrey V. Zakirov, Dmitriy D. Zherebtsov, Stanislav V. Chernyshikhin   +4 more
doaj   +1 more source

Mathematical approaches for track analysis and process optimization in additive manufacturing

Communications Materials
Additive manufacturing demands precise control of track formation and process parameters. Here we show a unified mathematical framework that links key variables to track geometry: we derive analytical expressions for solid and liquid contact angles ...
Mahdi Alishavandi, Rahmi Ünal, Metin Uymaz Salamci   +2 more
doaj   +1 more source

The Chinese Knot inspired anisotropic TC4 lattice Structures: Ultra-high specific strength in engineering materials

Materials & Design
Lattice structures possess high specific strength, multi-functionality through innovative structural designs. Here, we proposed an efficient method for the construction of lattice structures by elongating two-dimensional planar patterns along the load ...
Shenghang Xu, Chao Ding, Meng Han, Minghao Huang, Chunnan Song, Chen Chang, Shiqiu Liu, Xin Yang, Huiping Tang   +8 more
doaj   +1 more source

Off the Grid: A new strategy for material-jet 3D printing with enhanced sub-droplet resolution

Additive Manufacturing Letters
Drop-on-Demand additive manufacturing could offer a facile solution for scalable on-site manufacturing. With an increasing number of functional materials available for this technology, there are growing opportunities for applications, such as electronics.
Oliver Nelson-Dummett, Geoffrey Rivers, Negar Gilani, Marco Simonelli, Christopher J. Tuck, Ricky D. Wildman, Richard J.M. Hague, Lyudmila Turyanska   +7 more
doaj   +1 more source

Prototyping of Human Spare Parts with 3D Printing [PDF]

, 2014
3D printing technology is a leading technology for producing 3D virtual shape product. It is getting more popular by its accuracy and three dimensional objects.
Sabuj, MD. Shakil Islam
core  

A novel methodology of design for Additive Manufacturing applied to Additive Laser Manufacturing process [PDF]

, 2014
International audienceNowadays, due to rapid prototyping processes improvements, a functional metal part can be built directly by Additive Manufacturing. It is now accepted that these new processes can increase productivity while enabling a mass and cost
Hascoët, Jean-Yves, Kerbrat, Olivier, Mognol, Pascal, Ponche, Rémi   +3 more
core   +1 more source