Phase evolution studies during mechanical alloying of Fe(82−x)-Cr18-Six (x = 0, 1, 2, 3) alloy

Toor, Ihsan‐ul‐Haq; Ahmed, Jamil; Hussein, M.A.; Patel, Faheemuddin; Al-Aqeeli, N.

doi:10.1016/j.jallcom.2016.05.110

Cited by 7 publications

(11 citation statements)

References 38 publications

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“…However, the approaches mentioned above are energy intensive and time consuming which would greatly add to the production cost of the end products. Recently, mechanochemical synthesis via a high‐energy ball mill approach has been employed for the production of various TMBs . The mechanochemical synthesis approach is a unique process which could be used for manufacturing of several compounds difficult or impossible to obtain by conventional techniques at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, mechanochemical synthesis via a high-energy ball mill approach has been employed for the production of various TMBs. [17][18][19] The mechanochemical synthesis approach is a unique process which could be used for manufacturing of several compounds difficult or impossible to obtain by conventional techniques at room temperature. It is a more energetically efficient method as compared to the traditional techniques, which often require high temperature.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of osmium borides by mechanochemical method

et al. 2017

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Transition metal osmium borides were synthesized by mechanochemical method using high‐energy ball‐milling with Os (Osmium) and B (Boron) powders as raw materials. The formation process, reaction mechanism, and thermal stability of the mechochemically synthesized osmium borides were studied. Almost pure Os2B3 phase was obtained when the Os‐to‐B molar ratio was 1:2; while ReB2‐type hexagonal OsB2 with a small amount of RuB2‐type orthorhombic OsB2 was obtained when the Os‐to‐B molar ratio was 1:3. Stoichiometry OsB2 was obtained from boron rich starting mixture powders due to the B loss during the high‐energy ball‐milling process. It was also found that WC and osmium oxide were present as contaminants after ball milling for 40 hours. Heat treatment results revealed that the as‐synthesized Os2B3 powders are thermally stable in flowing Ar up to 800°C, but a transformation from hexagonal to orthorhombic structure partially occurred for the OsB2 powders as low as 600°C.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of osmium borides by mechanochemical method

et al. 2017

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“…Lattice parameter and micro‐strain calculations were done by carrying out the XRD of as received ball‐milled powders and then employing the Williamson–Hall equation . The result showed that the lattice parameter of ball‐milled powder was 0.8223 nm with 3.3% of lattice strain.…”

Section: Resultsmentioning

confidence: 99%

“…The overall objective of this comprehensive research project was to investigate the independent effect of Si on the corrosion performance of spark plasma sintered Fe‐18Cr‐xSi (x = 0 ∼ 3) alloys. Phase evolution during MA of Fe‐18Cr‐xSi (x = 0 ∼ 3) alloys and SPS process parameter optimization using Fe‐18Cr‐2Si (wt%) alloy has been reported elsewhere . However, the objective of this work was to investigate in detail the effect of sintering temperature on the corrosion performance of a newly developed nanostructured Fe‐18Cr‐2Si alloy using state of art (LPR and EIS) techniques.…”

Section: Introductionmentioning

confidence: 99%

Effect of sintering temperature on the corrosion properties of nanostructured Fe‐18Cr‐2Si alloy prepared by SPS

Ahmed

Toor

Al-Aqeeli

2016

Materials & Corrosion

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Nanostructured Fe-18Cr-2Si alloys were developed by a combination of mechanically alloying (MA) and spark plasma sintering (SPS) process. SPS was carried out in vacuum at three different temperatures (900, 1000, and 1100 8C) with a fixed holding time of 10 min and an applied pressure of 50 MPa. Potentiodynamic polarization (PDP), linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS) were used to study the effect of sintering temperature on the electrochemical properties of newly developed nanostructured ferritic Fe-18Cr-2Si alloy. XRD results showed that, after sintering, crystallite size increased with increasing sintering temperature and maximum crystallite size was 23.64 nm. The results showed that with increasing sintering temperature, corrosion resistance was increased in terms of pitting potential (E pit ), passive current density (i p ), and polarization resistance (Rp). The improved corrosion resistance was found to be closely related with the densification of the sintered alloys.

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“…are dissolved in the Nb lattice to form the supersaturated Nbss with even smaller lattice parameters. Moreover, the diffraction peaks of Nb are widening and their intensity decreases continuously with increase in ball milling time, which is due to the refinement of Nb grains and the increase of microstrain inside the grains [28,29]. The mechanism of grain refinement and microstrain increase during milling was previously studied by Fecht [30] and Xun et al [31].…”

Section: Methodsmentioning

confidence: 94%

Microstructural Evolution, Thermal Stability and Microhardness of the Nb–Ti–Si-Based Alloy during Mechanical Alloying

Zhang¹,

Guo²

2018

Metals

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Amorphization of the Nb-20Ti-15Si-5Cr-3Hf-3Al (at %) alloy is realized by mechanical alloying (MA). The amorphous phase formation and microstructural evolution are investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). During ball milling, the phase constituent of the alloy powder exhibits a transition from most supersaturated Nb-based solid solutions (Nbss) and a small amount of amorphous phases (after 20 h of ball milling) to a completely amorphous state (after milling for 40 h), which is accompanied by evolution of the powder morphology from flakes to aggregates and eventually to refined granules. The thermal stability of the milled amorphous powders is studied using differential scanning calorimetry (DSC). With the increase of heating temperature, the distortion energy stored during ball milling is released, followed by a transformation from amorphous phase to Nbss and γ-Nb 5 Si 3 phases. In addition, the Vickers microhardness remarkably increases, as a result of the amorphous phase formation in the matrix.

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Phase evolution studies during mechanical alloying of Fe(82−x)-Cr18-Six (x = 0, 1, 2, 3) alloy

Cited by 7 publications

References 38 publications

Synthesis of osmium borides by mechanochemical method

Synthesis of osmium borides by mechanochemical method

Effect of sintering temperature on the corrosion properties of nanostructured Fe‐18Cr‐2Si alloy prepared by SPS

Microstructural Evolution, Thermal Stability and Microhardness of the Nb–Ti–Si-Based Alloy during Mechanical Alloying

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