Results 41 to 50 of about 55,060 (259)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

A Three points bending ultrasonic fatigue resistance and vickers hardness of Tlalpujahua clay thermally treated

Fracture and Structural Integrity
Ultrasonic fatigue at an operating frequency of 20 kHz was conducted on thermally treated clay bricks at 500, 750, and 1000 °C with a holding time of 5 h, using a three-point bending setup to assess their fatigue endurance.
Hipólito Magdiel Venegas Montaño, Pablo Genaro Martínez Torres , Victor López Garza , Luis Miguel Torres Duarte, Gonzalo Mariano Domínguez Almaraz   +4 more
doaj   +3 more sources

Structural and Mechanical Properties of Nanocrystalline Fe60Al30Cu10 (at.%) Powders Prepared by Mechanical Alloying

Gazi Üniversitesi Fen Bilimleri Dergisi, 2019
In the present study, the nanostructured Fe(Al,Cu) solid solution was synthesized by mechanical alloying (MA) process of the elemental powders. The powder mixtures were milled in a planetary ball mill for various periods of time, up to 50 h.
Barış AVAR, Tuncay ŞİMŞEK, Musa GÖĞEBAKAN   +2 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

The influence of geometrical tolerances of Vickers indenter on the accuracy of measured hardness [PDF]

International Journal of Metrology and Quality Engineering, 2012
This paper reports work carried out to determine the influence of the Pyramidal indenter geometrical errors and tolerances on the accuracy of Vickers hardness measurements.
El-Sherbiny M., Hegazy R., Ibrahim M., Abuelezz A.   +3 more
doaj   +1 more source

Structural, elastic, and electronic properties of newly discovered Li2PtSi3 superconductor: Effect of transition metals

, 2016
First-principles calculations within the density functional theory (DFT) with GGA-PBE exchange-correlation scheme have been employed to predict the structural, the elastic and the electronic properties of newly discovered lithium silicide superconductor,
Alam, M. A., Hadi, M. A., Islam, A. K. M. A., Naqib, S. H., Nasir, M. T., Parvin, F., Roknuzzaman, M., Zilani, M. A. K.   +7 more
core   +2 more sources

Thermal-Mechanical Properties of Polyurethane-Clay Shape Memory Polymer Nanocomposites [PDF]

, 2010
Shape memory nanocomposites of polyurethane (PU)-clay were fabricated by melt mixing of PU and nano-clay. Based on nano-indentation and microhardness tests, the strength of the nanocomposites increased dramatically as a function of clay content, which is
Chen, Zhen Guo,, Fu, Yong Qing,, Hosson, Jeff T.M. De,, Huang, Wei Min,, Kraft, Arno,, Pei, Yu Tao,, Reuben, R.L.,, Xu, Bin,   +7 more
core   +5 more sources

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Experimental analysis and modeling of micro-texture and vickers hardness impact on polished stone value in high-friction aggregates

Frontiers in Materials
This article intends to study the influence of micro-texture and Vickers hardness on the Polished Stone Value (PSV) of four types of high friction aggregates (90# Bauxite, 75# Bauxite, Basalt, and Granite) during the long-term polishing process. For this
Zhenqing He, Jun Li, Juanni Nian, Bowen Guan   +3 more
doaj   +1 more source

Highly processable bulk metallic glass-forming alloys in the Pt–Co–Ni–Cu–P system [PDF]

, 2004
Highly processable bulk metallic glass alloys in the Pt–Co–Ni–Cu–P system were discovered. The alloys show low liquidus temperature below 900 K, excellent processability with low critical cooling rate reflecting in maximum casting thicknesses in quartz ...
Johnson, William L., Schroers, Jan
core   +1 more source