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Article
Production of Al-Ti Composite by a Combination of Accumulative Roll Bonding and Friction Stir Processing
In this research, an in situ Al-Ti composite was fabricated by a combination of accumulative roll bonding (ARB) and friction stir processing (FSP). Following 3 cycles of ARB, FSP was performed for 5 passes wit...
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Article
Aluminum phosphate-based coatings: a novel approach to next generation of protective and thermal barrier coatings
In the present study, a novel protective thermal barrier coating was developed. Amorphous aluminum phosphate powder was synthesized by sol–gel process and applied on Inconel 625 by air plasma spray (APS). Ther...
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Article
Mechanical, corrosion, and tribocorrosion behavior of biomedical ZrO2 ceramic coatings prepared by thermal oxidation
For the simultaneous improvement of mechanical, corrosion, and tribo-corrosion properties of Zr–2.5Nb alloy, an adherent black coating was deposited on the Zr–2.5Nb substrate by thermal oxidation in air at dif...
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Article
Thermodynamic Prediction of Phase Formation in Ni–P Alloy System During Mechanical Alloying: Comparison with Electroless Plating Technique
Mechanical alloying (MA) of Ni and P powders containing 20 and 12 wt% P was investigated. The structural changes of alloys during mechanical alloying were studied by X-ray diffractometry and transmission elect...
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Article
Multi-alloying of nanomet: conception and implementation of homogeneous nanocrystallization in high-flux density soft magnetic alloys
This study demonstrates how multi-alloying the Fe-Si–B–P–Cu (Nanomet®) can avoid the strict requirements on the annealing scheme in terms of high heating rate and narrow annealing temperature range in order to gr...
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Article
High-Temperature Oxidation and Wear Behavior of (Fe,Cr)Al Intermetallic Compound and (Fe,Cr)Al-Al2O3 Nanocomposites
In the current study, oxidation and wear resistance of FeAl and (Fe,Cr)Al intermetallic compounds as well as (Fe,Cr)Al-5%vol Al2O3 and (Fe,Cr)Al-10%vol Al2O3 nanocomposites were investigated. Ball-milled powders ...
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Article
Bulk Al–Al3Zr composite prepared by mechanical alloying and hot extrusion for high-temperature applications
Bulk Al/Al3Zr composite was prepared by a combination of mechanical alloying (MA) and hot extrusion processes. Elemental Al and Zr powders were milled for up to 10 h and heat treated at 600°C for 1 h to form stab...
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Article
The Influence of Volume Fraction of Martensite and Ferrite Grain Size on Ultimate Tensile Strength and Maximum Uniform True Strain of Dual Phase Steel
The aim of this study is to explain the contradiction of some results on interrelation of mechanical properties and microstructural analyses of dual phase (DP) steels. There have been some contradictions regar...
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Article
Microstructural Evolution and Recrystallization Kinetics of a Cold-Rolled, Ferrite-Martensite Structure During Intercritical Annealing
The recrystallization behavior of 80 pct, cold-rolled, low-carbon, dual-phase steel during intercritical annealing for different times was studied. The annealed microstructures showed that the recrystallizatio...
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Article
Ferrite-Martensite Band Formation During the Intercritical Annealing
Microstructural evolution during the intercritical annealing at 740 and 770 °C for 120-900 s in a low-carbon low-alloy steel from the initial martensitic matrix was studied by electron microscopy equipped with...
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Article
Novel Investigation on Nanostructured Multilayer and Functionally Graded Ni-P Electroless Coatings on Stainless Steel
In this study, step-wise multilayer and functionally graded Ni-P coatings were deposited with electroless in which the content of phosphorus and nickel would be changed gradually and step-wise through the thic...
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Article
Investigating the Properties of Friction Welded 2014 Aluminum Joints Prepared with Different Rotational Speeds
The aim of this study is to investigate the effect of rotational speed on the microstructure and mechanical properties of friction welded 2014 aluminum alloy. The experimental results illustrate that the joint...
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Article
Synthesis and Hydrogen Desorption Properties of Mg1.7Al0.15Ti0.15Ni-CNT Nanocomposite Powder
In this research, the effects of nanocrystallization and incorporation of aluminum, titanium, and carbon nanotubes (CNTs) on hydrogen desorption behavior of Mg2Ni alloy were investigated. Toward this purpose, nan...
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Article
Microstructural and Hardness Changes during Isothermal Annealing of Nanostructured Al-11.6Fe-1.3V-2.3Si Alloy
Microstructural evolution and hardness change during isothermal annealing (300-550 °C, 30 min) of nanostructured Al-11.6Fe-1.3V-2.3Si alloy, prepared by mechanical alloying (MA) of elemental powders, were inve...
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Article
Influence of Nickel-Coated Nanostructured WC-Co Powders on Microstructural and Tribological Properties of HVOF Coatings
In this research, a novel nickel-coated nanostructured WC-12Co powder (Ni/nc-WC) was developed and used as feedstock material for high velocity oxygen fuel process. The Ni/nc-WC powders with average WC grain s...
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Article
Photovoltaic Characterization and Electrochemical Impedance Spectroscopy Analysis of Dye-Sensitized Solar Cells Based on Composite TiO2–MWCNT Photoelectrodes
Dye-sensitized solar cells (DSSCs) use the effect of light on dye molecules to generate electricity through a photoelectrochemical mechanism. The aim of this study is to synthesize nanostructured DSSCs based o...
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Article
Thermal Stability Study of Ultrafine Grained 304L Stainless Steel Produced by Martensitic Process
An ultrafine grain 304L stainless steel with average grain size of about 650 nm was produced by martensitic process. 10 mm as-received sheets were 80% cold rolled in the temperature of −15 °C and then annealed...
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Article
Nanoscale Grain Growth Behaviour of CoAl Intermetallic Synthesized by Mechanical Alloying
Grain growth behaviour of the nanocrystalline CoAl intermetallic compound synthesized by mechanical alloying has been studied by isothermal annealing at different temperatures and durations. X-ray diffraction ...
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Article
Mechanical Properties and Thermal Stability of Nanostructured Al/Al12(Fe,V)3Si Alloys Produced by Powder Metallurgy
The present paper deals with the properties of bulk nanostructured Al-Fe-V-Si alloys containing 16, 27, and 37 vol.% of Al12(Fe,V)3Si precipitates. The elemental powders were subjected to high-energy ball milling...
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Article
Effects of Micro and Macroalloying on the Formation and Thermal Stability of Nanocrystalline L12-Al3V
Structural modification of nanocrystalline trialuminde Al3V by microalloying with Ti and macroalloying with Zr was studied. For micro and macroalloying, the Al75(V x Ti1−x ...
