Results 91 to 100 of about 25,819 (293)

Precipitation strengthening in extruded AZ61 magnesium alloys during heat treatment process [PDF]

, 2013
Magnesium alloys, in particular the commercial wrought alloy, AZ61 has been increasingly considered as an attractive material in the transportation industry. The objective of this paper is to determine the microstructure change and Mg Al precipitation in
Jusoff, Kamaruzaman, Din, Abdul Talib, Selamat, Mohd Zulkefli, Mohd Daud, Mohd Ahadlin, Jusoff, Kamaruzzaman   +4 more
core   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Precipitation behavior of V- N microalloyed steel at the normalizing process

工程科学学报, 2015
The precipitation behavior of V-N microalloyed steel at the normalizing process was studied by physicochemical phase analysis and high resolution transmission electron microscopy.
SU Hang, CHAI Xi-yang, PAN Tao, YANG Cai-fu, LIU Yi-zhi   +4 more
doaj   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Effect of Multi-Phase Composite Structure on the Mechanical Properties of Al_xFe_1.5CoNiC_0.12 High Entropy Alloys

Metals
Single-phase high entropy alloys (HEAs) exhibit limited mechanical properties while dual-phase and multi-phase HEAs offer better strength, toughness, and stability.
Yiteng Jiang, Aoxiang Li, Kaiwen Kang, Jinshan Zhang, Di Huang, Chunning Che, Saike Liu, Mingkun Xu, Yaqing Li, Borui Zhang, Gong Li   +10 more
doaj   +1 more source

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

Advances in Materials Science and Engineering, 2016
Mg-Li based alloys are widely applied in various engineering applications. The strength of these alloys is modified and enhanced by different strengthening mechanisms.
C. O. Muga, Z. W. Zhang
doaj   +1 more source

Atomic-Scale Insights into the Deformation Mechanism of the Microstructures in Precipitation-Strengthening Alloys. [PDF]

Materials (Basel), 2023
Wei C, Tang S, Kong Y, Shuai X, Mao H, Du Y.   +5 more
europepmc   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source