Results 51 to 60 of about 597,732 (264)

Die design of powder metallurgy hand tight nuts used for power tools

open access: yesFenmo yejin jishu
The structure of powder metallurgy hand tight nuts used for power tools is complex. The reasonable die structure and size were found out in this paper by the careful analysis of product structure and forming process, combining with 3D design software and
SUN Lichen   +3 more
doaj   +1 more source

Causes analysis on cracks in nickel-based single crystal superalloy fabricated by laser powder deposition additive manufacturing

open access: yesMaterials & Design, 2018
Additive manufacturing is an advanced forming method to fabricate complex components, while cracks appear in the deposited nickel-based single crystal superalloy samples undesirably.
Zhipeng Zhou   +5 more
doaj   +1 more source

Effects of Mg and Sb Substitution on the Magnetic Properties of Magnetic Field Annealed MnBi Alloys

open access: yesNanomaterials, 2020
Rare-earth-free permanent magnets have attracted considerable attention due to their favorable properties and applicability for cost-effective, high-efficiency, and sustainable energy devices. However, the magnetic field annealing process, which enhances
Hui-Dong Qian   +5 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

open access: yesAdvanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov   +4 more
wiley   +1 more source

Sepiolite: A new component suitable for 380 ​km/h high-speed rail brake pads

open access: yesAdvanced Powder Materials
To enhance the high-temperature adaptability of copper-based composite materials and C–C/SiC discs, this article innovatively introduces a method of replacing graphite with sepiolite, resulting in the successful fabrication of samples with exceptional ...
Jiaqi Wu   +6 more
doaj   +1 more source

Powder metallurgy processed metal-matrix friction materials for space applications

open access: yesFriction, 2017
Owing to the increasing demand for tribological brakes for space applications, the development of novel materials and advanced technologies is necessary.
Yelong Xiao   +5 more
doaj   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Fabrication and mechanical properties of gradient-structured W–Ni–Fe–Mo/Co tungsten heavy alloys

open access: yesFenmo yejin jishu
Gradient-structured tungsten heavy alloys with spatially graded mechanical properties can effectively resolve the strength-ductility trade-off in conventional homogeneous tungsten alloys. The high-strength 93W–Ni–Fe–Mo alloys and high-ductility 90W–Ni–Fe–
MENG Ziqi   +6 more
doaj   +1 more source

Effect of reaction sintering modes on the structure and properties of carbide ceramics

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
Experimental studies of the structure, phase composition, physical and mechanical properties of the reaction-sintered ceramics based on silicon carbide and boron obtained by reaction sintering have been performed. It has been shown that the properties of
E. V. Zvonarev   +4 more
doaj   +1 more source

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