Results 31 to 40 of about 59,871 (268)

Effect of Post Heat Treatment on the Microstructure and Microhardness of Friction Stir Processed NiAl Bronze (NAB) Alloy

Metals, 2015
NiAl bronze (NAB) alloy is prepared by using friction stir processing (FSP) technique at a tool rotation rate of 1200 rpm and a traverse speed of 150 mm/min. A post heat treatment is performed at the temperature of 675 °C. The effect of heat treatment on
Yuting Lv, Liqiang Wang, Xiaoyan Xu, Weijie Lu   +3 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Constitutive modelling and mechanical characterization of aluminium-based metal matrix composites produced by spark plasma sintering [PDF]

, 2010
Spark plasma sintering has been applied to the production of aluminium-based functionally graded material systems to be used in abrasive and high temperature conditions.
Estournès, Claude, C. Estournes, Bolzon, Gabriella, Egizabal, Pedro, E. J. Chiarullo, Chiarullo, Enzo J., P. Egizabal   +6 more
core   +1 more source

The benefit of the glassy state of reinforcing particles for the densification of aluminum matrix composites [PDF]

, 2022
In metallic glass-reinforced metal matrix composites, the glassy phase can serve a dual purpose: (i) it can behave as soft binder and porosity remover during consolidation; and (ii) it can act as the hard reinforcing phase after densification.
Arina V. Ukhina, Dudina, Dina V., Georgarakis, Konstantinos, Vyacheslav I. Kvashnin, Konstantinos Georgarakis, Ukhina, Arina V., Kvashnin, Vyacheslav I., Koga, Guilherme Yuuki, Dina V. Dudina, Guilherme Yuuki Koga   +9 more
core   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Confining iodide migration with quantified barrier for durable perovskite solar cells

Nature Communications
The migration of iodide ions out of the perovskite film degrades charge transport and electrode layers, reducing the long-term stability of perovskite solar cells.
Hongcai Tang, Yangzi Shen, Ge Yan, Liyuan Han, Qifeng Han   +4 more
doaj   +1 more source

Abnormal grain growth in randomly-oriented fine grains in an Al–Mg–Sc–Zr alloy processed by laser-powder-bed-fusion

Materials Research Letters
In this work, we report a counter-intuitive activation of abnormal grain growth (AGG) in randomly-oriented fine grains (FGs) in an L-PBF Al–Mg–Sc–Zr alloy, which is unlikely from perspectives of curvature-driven grain growth, crystallographic texture or ...
Yanchi Chen, Xiang Chen, Han Chen, Yakai Xiao, Jing Dai, Yidan Chen, Yuchi Cui, Chengyi Dan, Zhe Chen, Xianfeng Li, Haowei Wang   +10 more
doaj   +1 more source

Shear lag models for discontinuous composites: fibre end stresses and weak interface layers

, 1999
A new shear lag (SL) type model for stress transfer in a composite with cylindrical fibres is derived. It accounts for fibre end stresses in an approximate yet realistic manner, and leads to a new formula for predicting the Young’s modulus of the ...
M.J Starink, S Syngellakis, Starink, M.J., Syngellakis, S.   +3 more
core   +1 more source

Design and Analysis of an Automobile Disc Brake Rotor by Using Hybrid Aluminium Metal Matrix Composite for High Reliability

, 2023
Due to their superior capabilities for manufacturing lightweight automotive components, aluminium metal matrix composites have gained a lot of attention in the last few years.
Appusamy Muniappan, Sthitapragyan Maharana, V. Vijayan, Mandeep Singh, M. K. Loganathan, Tien V. T. Nguyen, Harish Kumar Garg   +6 more
core   +1 more source