Results 41 to 50 of about 13,347 (249)

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Abrasive machining simulation technology for hard-brittle materials

Jin'gangshi yu moliao moju gongcheng, 2019
Hard-brittle materials such as monocrystalline silicon have high hardness, low fracture toughness and other characteristics, which belong to difficult-to-machine materials.
LI Long, GE Peiqi, WANG Peizhi, LI Zongqiang   +3 more
doaj  

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

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

On Strength of Brittle Nanomaterials: Confinement Effect on Weibull Distributions

Frontiers in Materials, 2019
Recent progress in nanotechnology enables us to utilize elastic strain engineering, the emerging technology capable of controlling the physio-chemical properties of materials via externally-imposed elastic strains, for hard materials.
Dahye Shin, Dongchan Jang
doaj   +1 more source

Active Corrosion Protection of Sintered AA7075 Aluminum Alloy via Mn Powder Addition

Advanced Engineering Materials, EarlyView.
AA7075 containing Mn‐rich particles is fabricated via spark plasma sintering using AA7075 and Mn powders. Corrosion resistance is evaluated through dip‐and‐dry tests using 0.1 M NaCl (pH 6.0), and mass loss decreases with increasing Mn addition. Mn‐rich particles function as a source of Mn ions, and formation of Mn‐accumulation films on Cu‐containing ...
Ko Ebina, Masashi Nishimoto, Izumi Muto
wiley   +1 more source

Comparison of erosion resistance of hard and brittle materials processed by low-temperature micro-abrasive gas jet

Jin'gangshi yu moliao moju gongcheng
Objectives: During low-temperature micro-abrasive air jet machining, the mechanical properties of materials undergo changes, making the material more prone to brittleness and erosion removal.
Pengchong XU, Yuli SUN, Guiguan ZHANG, Shijie KANG, Wenzhuang LU, Yebin SUN, Dunwen ZUO   +6 more
doaj   +3 more sources

Multi-Wire Sawing of Translucent Alumina Ceramics

Journal of Manufacturing and Materials Processing, 2020
Multi-wire sawing has emerged as the leading technology in wafer production for a variety of semiconductor materials. This study investigates the process stability and efficiency of conventional semiconductor multi-wire slurry saws in routinely machining
Lea Schmidtner, Hannes Heinrich, Marcel Fuchs, Anke Pötzsch, Stefan Janz, Mathias Herrmann, Christos Aneziris, Thomas Kaden   +7 more
doaj   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

Advanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani, Zongwen Fu, Robert Göstl, Hamed Shokri, Carmine Putignano, Gianluca Percoco, Bilal Gökce   +6 more
wiley   +1 more source

The State of the Art in Electrochemical Micro Machining Technologies [PDF]

한국정밀공학회지, 2018
Electrochemical micromachining (ECM) processes use anodic dissolution of metals to remove workpiece materials. ECM processes including electrochemical milling and drilling, wire electrochemical machining and electrochemical etching offer a better ...
Pyeong An Lee, Eunseok Nam, Bo Hyun Kim
doaj   +1 more source