Compaction and Densification Characteristics of Iron Powder/Coal Fly Ash Mixtures Processed by Powder Metallurgy Technique

Singh, Àmarjit; Singh, Jarnail; Sinha, Manoj Kumar; Kumar, Rajesh; Verma, Vikram

doi:10.1007/s11665-020-05429-x

Cited by 17 publications

(3 citation statements)

References 59 publications

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“…XRD analysis was carried out at SAIF, Panjab University Chandigarh operated at 40 mA, 45 kV and data were analyzed at an angle (2 theta) from 10 to 100 degree and a step size of 0.0170. It has been found from the XRD spectra (Fig.9, 10) that there has been presence of various distinct phases of Al2O3, Fe2O3, MgO , SiC and TiO2 which has been in good agreement as per their respective JCPDS cards and respective planes (71-1123 for Al2O3 (110) 08-0479 for Mg(CO)3 (110), 89-7100 for Fe2O3 (400 & 511) , 78-0430 for MgO (222) and 01-078-2486 for TiO2 (224))[26][27][28][29][30][31][32][33], So presence of these phases confirms the successful addition of reinforcements in our Al6061 matrix. Also, from the XRD patterns it has been seen that there is increase in intensity…”

mentioning

confidence: 69%

Characterization, Fabrication and Dry Sliding Wear Analysis of Hybrid Aluminium 6061 Composite

Awasthi¹,

Panwar²,

Pant³

et al. 2021

Tribol. Ind.

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In the present study, wear behavior of Al6061 hybrid composite having silicon carbide and red mud as the reinforcements have been studied. This hybrid composite was fabricated using the stir casting technique. Effect of variation of magnesium content, red mud content, aging time, red mud particle size, applied load, displacement and speed were studied. Scanning electron microscopy confirmed the fairly uniform distribution of the reinforcement particles and provided wear patterns of this composite. Energy dispersive spectroscopy showed different constituents present in this hybrid composite. Wear loss decreased with an increase in magnesium content and aging time while it decreased with an increase in red mud content up to 4% (wt%) and particle size up to 150 mesh (105 µm). Wear loss increased with an increase in load, sliding speed and sliding distance. Load and sliding distance have a significant effect on the wear loss. Optimum values for minimum weight loss were calculated and were confirmed by confirmation experiments. Load and sliding distance have been found to have significant effect on wear loss. So this fabricated composite can be utilized in various applications like in Marine frames, Aircraft and truck frames, Chemical equipment, aircraft landing mats etc.

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mentioning

confidence: 69%

Characterization, Fabrication and Dry Sliding Wear Analysis of Hybrid Aluminium 6061 Composite

Awasthi¹,

Panwar²,

Pant³

et al. 2021

Tribol. Ind.

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“…In addition, when the applied pressure increases to 208 MPa, the end of the S3 hardness-fitting curve overlaps those of the S1 and S2 curves. Since the applied force is transferred from the top to the bottom through the push between the powders, after the powders are close to the saturation of rearrangement and elastic deformation, this transfer is more difficult [69,70]. This is because the interstice required for the further movement and rotation of the powders is insufficient [71,72].…”

Section: Hardness Distribution Test Results and Discussionmentioning

confidence: 99%

Microhardness Distribution of Long Magnesium Block Processed through Powder Metallurgy

Wang¹,

Li²

2022

JMMP

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Powder metallurgy is a popular method of making raw powders into specific shaped samples. However, the pressure distribution and the microhardness difference within the sample are nonnegligible and unclear when the sample is long or exceeds a specific size. In this study, the long magnesium blocks, with a ratio of about 2.8 between the sample height and the sample side length, are successfully synthesized under three uniaxial and two biaxial conditions. Then, the sample hardness values on the outer surface and the center plane are tested to study the microhardness distribution. The modified analytical expression indicates that the normal pressure exponentially decreases along the compression direction, which is consistent with the hardness distribution trend. Because higher pressure leads to a more compact arrangement of the powders, more metal bonds are formed after sintering. During the first pressing, the sidewall pressure makes the surface hardness higher. The secondary reverse compression mainly improves the bottom and core hardness due to the re-orientation and re-location of the powders. The obtained relationship between the applied pressure and the hardness distribution is instructive in predicting and improving the sample quality.

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“…However, conventional PM methods exhibit certain limitations, such as high density, low mechanical properties caused by porosity and large grain size. 19 To address these limitations, severe plastic deformation techniques (SPD) have been employed. Various SPD methods, including equal channel angular pressing (ECAP), 20 cyclic extrusion compression (CEC), 21 high-pressure torsion (HPT) 22 and back pressure ECAP 23 have been developed for producing bulk alloys from powders.…”

Section: Introductionmentioning

confidence: 99%

Processing of different Mg-based multiphase alloys via a combined severe plastic deformation

Torabi,

Hosseini,

Siahsarani

et al. 2024

Materials Science and Technology

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In this study, cyclic extrusion compression angular pressing-forward extrusion was employed to develop binary magnesium-based multiphase alloys, and subsequently analysed the microstructural, mechanical and corrosional properties of the resulting samples. The findings demonstrate that the inclusion of alloying elements in the multiphase alloys significantly enhances their microstructural, mechanical and corrosional properties. Compared to pure Mg samples fabricated using the same method, the multiphase alloys produced by this technique exhibit finer grain structures. Mechanical analysis indicates that these multiphase alloys possess higher yield and ultimate strength compared to pure magnesium. Corrosion testing reveals that all produced alloys outperform pure magnesium in various aspects. Particularly, Mg–1Zn and Mg–1Mn alloys exhibit exceptional corrosion resistance in immersion, mass loss and polarisation tests.

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Compaction and Densification Characteristics of Iron Powder/Coal Fly Ash Mixtures Processed by Powder Metallurgy Technique

Cited by 17 publications

References 59 publications

Characterization, Fabrication and Dry Sliding Wear Analysis of Hybrid Aluminium 6061 Composite

Characterization, Fabrication and Dry Sliding Wear Analysis of Hybrid Aluminium 6061 Composite

Microhardness Distribution of Long Magnesium Block Processed through Powder Metallurgy

Processing of different Mg-based multiphase alloys via a combined severe plastic deformation

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