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Journal articles on the topic 'Iron-aluminium alloys'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hilfrich, K., K. Nembach, W. Petry, O. Schärpf, and E. Nembach. "Superlattices in iron-rich iron-aluminium alloys." Physica B: Condensed Matter 180-181 (June 1992): 588–90. http://dx.doi.org/10.1016/0921-4526(92)90403-f.

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2

Ji, Shou Xun, Feng Gao, and Zhong Yun Fan. "Thermodynamics Calculation of Extra Mn Addition in the Recycling of Al-Si-Cu Aluminium Alloys." Materials Science Forum 877 (November 2016): 33–38. http://dx.doi.org/10.4028/www.scientific.net/msf.877.33.

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Iron contamination from scrapped materials is always a problem in producing high quality secondary aluminium alloys. Consequently, the iron removal during recycling of aluminium alloys is essential and important in industrial practice. This work aims to study the effect of extra Mn addition on the effectiveness and efficiency of iron removal during recycling. The thermodynamics assessment was carried out for Al-Si-Cu alloys to find out the variation of balanced iron and manganese in the liquid melt and in the sediment solid Fe-rich intermetallics with different levels of extra Mn addition. The effect of alloy composition and processing temperatures was investigated. The findings help to understand the capability and fundamentals of iron removal in aluminium alloys.

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3

Turmezey, T., Vilmos Stefániay, and A. Griger. "Microstructure of Iron Containing Aluminium Alloys." Key Engineering Materials 38-39 (January 1991): 43–64. http://dx.doi.org/10.4028/www.scientific.net/kem.38-39.43.

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4

Devan, J. H., and P. F. Tortorelli. "Oxidation/sulfidation of iron-aluminium alloys." Materials at High Temperatures 11, no. 1-4 (January 1993): 30–35. http://dx.doi.org/10.1080/09603409.1993.11689436.

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5

Meyer, M., L. Mendoza-Zélis, and Francisco H. Sánchez. "Mechano-Synthesis of Iron Containing Aluminium Alloys." Materials Science Forum 179-181 (February 1995): 177–82. http://dx.doi.org/10.4028/www.scientific.net/msf.179-181.177.

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6

Ashtari, P., K. Tetley-Gerard, and K. Sadayappan. "Removal of iron from recycled aluminium alloys." Canadian Metallurgical Quarterly 51, no. 1 (January 2012): 75–80. http://dx.doi.org/10.1179/1879139511y.0000000026.

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7

Gogia, A. K., P. V. Rao, and J. A. Sekhar. "Rapidly solidified aluminium-iron-misch metal alloys." Journal of Materials Science 20, no. 9 (September 1985): 3091–100. http://dx.doi.org/10.1007/bf00545173.

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8

Carrera, E. A., J. H. Ramírez-Ramírez, F. A. Pérez-González, J. A. González, I. Crespo, I. Braceras, I. Martínez-de-la-Pera, et al. "Molten aluminium attack on iron based alloys." International Journal of Cast Metals Research 30, no. 3 (February 7, 2017): 171–79. http://dx.doi.org/10.1080/13640461.2017.1283878.

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9

Kalinina, Natalia Yevgrafovna, Tatyana Valerevna Nosova, Alexander Vasilievich Kalinin, Stella Igorevna Mamchur, Anton Albertovich Shakhov, and Igor Alexandrovich Mamchur. "WELDING ALUMINIUM ALLOYS REFRACTORY MODIFIERS TREATMENT – THE EFFECTIVE METHOD FOR CHARACTERISTICS INCREASING." Journal of Rocket-Space Technology 27, no. 4 (December 30, 2019): 74–78. http://dx.doi.org/10.15421/451912.

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The effect of modification by refractory dispersed compositions on the grain structure and properties of welded aluminium alloys is determined. Aluminium alloys of the Al-Mg-Mn system of chemical composition were studied: 4.8-6.0% magnesium, 0.3-0.5% manganese; 0.45 – 0.90% iron; aluminium - base. The iron content corresponded to the pre-eutectic and post-eutectic compositions of the aluminium-iron system. Titanium carbide (TiC) modifier powders with a dispersion of 1-5 microns obtained by the method of plasmachemical synthesis. The microstructure of the alloys was studied using MIM-8 and Neophot-2 optical microscopes. The strength properties of the alloys were determined using the MUP-20 machine. Production of samples was carried out according to GOST 1497-84 and GOST 9454-80. Fluidity was determined by the spiral sample method. The properties of alloys before and after modification were investigated. Improved technological properties of aluminium alloys after modification. Increased fluidity in AMg5 and 1420 alloys by 1.5% and 6%, respectively. The obtained homogeneous dispersed structure of aluminium alloys after modification. The strength properties of modified alloys are increased by20 %. Experiments were conducted on the effect of the charge type on the structure and properties of technically pure aluminium and aluminium alloys AMg5 and 1420. The advantage of solid charge in the smelting of aluminium ingots in reducing porosity and grinding grain in comparison with the use of liquid charge is established. The effective effect of the refractory modifier of titanium carbide on the properties of aluminium alloys is proved.

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10

Hurtalová, Lenka, Eva Tillová, and Mária Chalupová. "The Study of Iron Intermetallic Phases Morphology with Applying Deep Etching in Secondary Al-Si Alloys." Materials Science Forum 782 (April 2014): 359–64. http://dx.doi.org/10.4028/www.scientific.net/msf.782.359.

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The morphology control of intermetallic phases is very important in secondary aluminium cast alloy, because these alloys contain more of additional elements, which forms various intermetallic phases in the structure. Improvement of the mechanical properties is strongly depending upon the morphology, type and distribution of the second phases, which are in turn a function of the alloy composition and cooling rate. The iron intermetallic phase has the greatest influence on mechanical properties. It is necessary to study microstructure of Al-Si alloys, because the metallographic evaluation of aluminium alloys is not simple and these alloys are used for production many mechanical components, especially for cars, aerospace and rail vehicles. The study of iron intermetallic phases was performed using light microscope Neophot 32 and SEM observation with EDX analysis. For study the morphology of these phases were samples deep-etched for 30 s in HCl solution, in order to reveal the three-dimensional morphology of the iron phases.

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11

Szabó, I. A., Dezső L. Beke, G. Erdélyi, and F. J. Kedves. "Precipitation Growth and Dissolution in Aluminium-Iron Alloys." Materials Science Forum 13-14 (January 1987): 307–12. http://dx.doi.org/10.4028/www.scientific.net/msf.13-14.307.

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12

Kruszewski, P., A. Mesli, L. Dobaczewski, N. V. Abrosimov, V. P. Markevich, and A. R. Peaker. "Iron-aluminium pair reconfiguration processes in SiGe alloys." Journal of Materials Science: Materials in Electronics 18, no. 7 (February 13, 2007): 759–62. http://dx.doi.org/10.1007/s10854-006-9104-5.

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13

Szymura, S. "Induced magnetic anisotropy in iron-aluminium-carbon alloys." Journal of the Less Common Metals 136, no. 1 (December 1987): 161–67. http://dx.doi.org/10.1016/0022-5088(87)90020-8.

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14

Dybkov, V. I. "Interaction of iron-nickel alloys with liquid aluminium." Journal of Materials Science 28, no. 23 (December 1993): 6371–80. http://dx.doi.org/10.1007/bf01352200.

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15

Volchok, I. P., A. A. Mityayev, and R. A. Frolov. "Complex technology of secondary aluminium alloys quality increasing." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 4 (January 14, 2019): 19–23. http://dx.doi.org/10.21122/1683-6065-2018-4-19-23.

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In the article the possibility of obtaining high-quality castings from a charge, consisting of secondary aluminium A356.2 and AK7ch with a high level of iron, is considered. The influence of the complex treatment of the melt by a modifier and fine-crystalline remelting at an iron content in the alloy to 1.84% is presented.

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16

Siemiaszko, Dariusz, and Iwona Garwacka. "Unexpected High Ductility of Fe40Al Alloys at Room Temperature." Materials 14, no. 17 (August 28, 2021): 4906. http://dx.doi.org/10.3390/ma14174906.

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Iron aluminium alloys, especially those sintered from elemental powders, suffer from low ductility. In this paper, an iron aluminium alloy (Fe40Al) produced by pressure-assisted induction sintering from elemental powders is shown and described. Samples produced by this method show an unexpectedly high ductility in the compression test that is an order of magnitude higher than the literature values. Microstructural observations show plastic behaviour with significant deformation of the grains and a lack of decohesion. At the same time, the tensile properties of these samples remain at much lower levels. An attempt to explain this phenomenon is made and described in this paper.

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17

Marshall, Graeme J., and R. A. Ricks. "Role of Iron during Recovery and Recrystallization of Aluminium-Iron Alloys." Materials Science Forum 113-115 (January 1993): 245–50. http://dx.doi.org/10.4028/www.scientific.net/msf.113-115.245.

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18

Herrmann, J., G. Inden, and G. Sauthoff. "Deformation behaviour of iron-rich iron-aluminium alloys at high temperatures." Acta Materialia 51, no. 11 (June 2003): 3233–42. http://dx.doi.org/10.1016/s1359-6454(03)00144-7.

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19

Denkena, Berend, Hans Kurt Tönshoff, and David Boehnke. "An Assessment of the Machinability of Iron-Rich Iron-Aluminium Alloys." steel research international 76, no. 2-3 (February 2005): 261–64. http://dx.doi.org/10.1002/srin.200506007.

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20

Gumienny, Grzegorz, Barbara Kurowska, and Leszek Klimek. "Aluminium in compacted graphite iron." China Foundry 17, no. 2 (March 2020): 137–43. http://dx.doi.org/10.1007/s41230-020-9013-x.

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21

Znamenskii, L. G., A. N. Franchuk, and A. A. Yuzhakova. "Nanostructured Materials in Preparation Casting Alloys." Materials Science Forum 946 (February 2019): 668–72. http://dx.doi.org/10.4028/www.scientific.net/msf.946.668.

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The article deals with technologies of refining and inoculating casting alloys with the use of nanostructured diamond powder, as well as stimulation technique on molten metal including processing of the liquid alloy with nanosecond electromagnetic pulses. The developed method of cast iron inoculation allows to eliminate the flare and to increase the physical and mechanical properties of the castings through the grain refining and the decrease of chilling tendency during crystallization of the liquid alloy. Inoculating of aluminium alloys by high-melting particles of a nanostructured diamond powder leads to the grinding of structural constituents, including conditions for dispersing hardening intermetallics during postbaking of such castings. As a result, foundry and physicomechanical properties of castings are significantly improved.

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22

Salleh, M. S., M. Z. Omar, J. Syarif, M. N. Mohammed, and K. S. Alhawari. "Effect of Pouring Temperature and Cooling Slope Length on Microstructure and Mechanical Properties of Rheocast A319 Aluminium Alloy." Applied Mechanics and Materials 699 (November 2014): 251–56. http://dx.doi.org/10.4028/www.scientific.net/amm.699.251.

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Aluminium alloys are among the most prominent and well known materials used in automotive industries. Nowadays, many vehicles used aluminium engine blocks instead of cast iron to improve fuel efficiency. Among cast aluminium alloys, A319 grade alloys are normally used in automotive industries due to a combination of good fluidity and mechanical strength. In this study, A319 cooling slope rheocasting billets were produced in order to obtain near spherical morphology of primary aluminium phase. The change in the α-Al morphology upon the cooling slope casting was remarkable and the dendritic microstructure was almost replaced by α-Al globules and rosettes. The rheocasting billets were prepared for tensile testing at room temperature. It is found that, the yield strength and elongation of cooling slope rheocasting billets is higher than those from as-cast A319 alloy.

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23

Shivakumar, S. P., A. S. Sharan, and K. Sadashivappa. "Experimental Investigations on Vibration Properties of Aluminium Matrix Composites Reinforced with Iron Oxide Particles." Applied Mechanics and Materials 895 (November 2019): 122–26. http://dx.doi.org/10.4028/www.scientific.net/amm.895.122.

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Aluminium matrix composites offer improved damping properties than other metals and its alloy. Generally pure metals and its alloys may have fairly good mechanical properties but falls short in damping properties. Aluminium matrix composites are becoming important in aerospace automobile and marine applications due to its god damping properties. The present investigation is concerned with the damping capacity of iron oxide (Fe2O3) reinforced aluminium matrix composite. The composites were fabricated with 2%, 4% and 6%, by weight of iron oxide with varied particle of size 40 μm and 500 nm in equal proportions using stir casting process. From the results obtained the 500 nm size with 4 wt% of iron oxide showed improved dynamic properties. The iron oxides reinforced with aluminum matrix are found to be new substitutes for the existing materials with low damping properties.

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24

Kučera, Vojtěch, Filip Průša, and Dalibor Vojtěch. "Al-Fe Chips Processed by High-Energy Ball Milling and Spark Plasma Sintering." Solid State Phenomena 270 (November 2017): 197–204. http://dx.doi.org/10.4028/www.scientific.net/ssp.270.197.

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Typically, conventional casting technologies are employed to manufacture aluminium alloys from scrap, but during recycling iron accumulates and increases in content. Increased iron content in such alloys reduces their mechanical properties. Because powder metallurgy is able to prepare materials with a very fine microstructure, we investigated its use for the preparation of aluminium alloys with a high iron content and the required mechanical properties. We prepared an Al-Fe17 (wt. %) binary alloy using combination of mechanical working (MW), high-energy ball milling (HEBM) and spark plasma sintering (SPS). The thus-prepared samples were analyzed (XRD, XRF, SEM-EDS, compression stress-strain test) and compared to the commercially-available alloy Al-Si12-Cu1-Mg1-Ni1, which is thermally stable. While the MW followed by SPS sample showed improved plastic deformation, the combination of MW, HEBM and SPS led to the absence of plastic deformation at room temperature. However, the MW+HEBM+SPS had much higher strength (579 MPa) and possessed similar thermal stability as the commercial Al-Si12-Cu1-Mg1-Ni1.

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25

Klöwer, J. "High temperature Corrosion behaviour of iron aluminides and iron-aluminium-chromium alloys." Materials and Corrosion/Werkstoffe und Korrosion 47, no. 12 (December 1996): 685–94. http://dx.doi.org/10.1002/maco.19960471205.

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26

Bolibruchová, Dana, and Mária Žihalová. "Possibilities of iron elimination in aluminium alloys by vanadium." Manufacturing Technology 13, no. 3 (October 1, 2013): 289–96. http://dx.doi.org/10.21062/ujep/x.2013/a/1213-2489/mt/13/3/289.

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27

Csanády, Ágnes, I. Bertóti, M. Mohai, and I. Perczel. "Surface Characterization of Rapidly Solidified Aluminium Alloys Containing Iron." Key Engineering Materials 44-45 (January 1991): 155–62. http://dx.doi.org/10.4028/www.scientific.net/kem.44-45.155.

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28

Medvecká, Denisa, Lenka Kuchariková, and Milan Uhríčik. "The Failure Degradation of Recycled Aluminium Alloys with High Content of β-Al₅FeSi Intermetallic Phases." Defect and Diffusion Forum 403 (September 2020): 97–102. http://dx.doi.org/10.4028/www.scientific.net/ddf.403.97.

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In this study, the effect of the β-Al5FeSi phases on fracture surfaces in secondary AlSi7Mg0.3 cast alloys with common and higher amount of iron was investigated. Iron addition caused the formation of different Fe-rich intermetallic phases in aluminium alloys. Components made of secondary aluminium alloys commonly have a higher amount of such phases. Sharp needles as β-Al5FeSi phase lead to initiate stress tension, thereby contributing to increased risk of micro-cracks formation on the fracture surfaces. To determine the effect of β-Al5FeSi to fracture surfaces of AlSi7Mg0.3 cast alloy, SEM microscopy with energy-dispersive X-ray spectroscopy (EDX) was used to study the amount of needles phases, their morphology and violation wave. It was found that increasing Fe content increased the size and the number of Al5FeSi phases. The fractographic analysis of fracture surfaces shows an increasing amount of cleavage fracture in materials with a higher amount of iron, too.

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29

Lech-Grega, Marzena, and Sonia Boczkal. "Iron Phases in Model Al-Mg-Si-Cu Alloys." Materials Science Forum 674 (February 2011): 135–40. http://dx.doi.org/10.4028/www.scientific.net/msf.674.135.

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Iron phases present in alloys from the 6xxx series affect the workability behaviour of these alloys. Iron in these alloys occurs in the form of intermetallic phases and AlFe, α-AlFeSi, β- AlFeSi eutectics. The homogenisation treatment is carried out to induce the transformation of  phase into phase The aim of the studies was EDX and EBSD analysis by scanning microscopy of iron phases present in model alloys based on 6061 system, characterised by the silicon-iron ratio Si/Fe=0,5 and 1, examined in as-cast condition and after homogenisation, followed by a comparison of the detected phases with phases present in industrial ingots. In 6061 alloy, copper in the amount of 0,4wt.% occurred in the solid solution of aluminium. The EDX analysis proved that copper atoms were embedded also in iron precipitates, and scarce phases of an AlxCuy type were being formed. Different content of magnesium in the examined alloys (0,8 and 1,2wt.%) affected not only the quantitative content of Mg2Si phases, but also the presence of AlFe phases in alloy with small content of Si (0,4wt.%) and high content of Mg (1,2wt.%).

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30

Mounika, G. "Closed Loop Reactive Power Compensation on a Single-Phase Transmission Line." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 20, 2021): 2156–59. http://dx.doi.org/10.22214/ijraset.2021.35489.

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Zinc-aluminium alloys are alloys whose main ingredients stay zinc and aluminium. Other alloying elements clasp magnesium and copper .Zinc Aluminum Alloys over the past decayed are occupying attention of both researches and industries as a promising material for tribological applications. At this moment commercially available Zinc-Aluminium alloys and bearing bronzes due to good cost ability and unique combination of properties. They can also be deliberated as competing material for cast iron, plastics and even for steels. It has been shown that the addition of alloying elements including copper, silicon, magnesium, manganese and nickel can improve the mechanical and tribological properties of zinc aluminum alloys. This alloy has still found limited applications encompassing high stress conditions due to its lower creep resistance, compared to traditional aluminum alloys and other structural materials. This has resulted in major loss of market potential for those alloy otherwise it is excellent material. The aim of this paper is to measure the coefficient of friction and wear under different operating conditions for material with silicon content. Then wear equation will be found out for all the materials experimented under various conditions. In this paper there is discussion of the effect of Silicon on tribological properties of aluminium based Zinc alloy by experiment as well as Ansys software based and compares the same.

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31

Eumann, Markus, Martin Palm, and Gerhard Sauthoff. "Iron-Rich Iron-Aluminium-Molybdenum Alloys with Strengthening Intermetallicμphase and R phase Precipitates." steel research international 75, no. 1 (January 2004): 62–73. http://dx.doi.org/10.1002/srin.200405928.

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32

Herrmann, Jutta, Gerhard Inden, and Gerhard Sauthoff. "Deformation Behaviour of Iron-Rich Iron-Aluminium Alloys with Ternary Transition Metal Additions." steel research international 75, no. 5 (May 2004): 339–42. http://dx.doi.org/10.1002/srin.200405964.

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33

Mityayev, O., and I. Volchok. "Influence of Intermetallic Phases on Fracture Resistance of Silumins." Archives of Foundry Engineering 13, no. 4 (December 1, 2013): 83–86. http://dx.doi.org/10.2478/afe-2013-0087.

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Abstract In secondary aluminium alloys iron is the main detrimental impurity. It forms intermetallic phases which have lamellar shape, high brittleness and weak crystallographic conformity with the matrix. In the work the influence of intermetallic phases on the initiation and propagation of microcracks, mechanical and service properties of aluminium alloys has been investigated.

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34

Behrens, Bernd-Arno, Kai Brunotte, Tom Petersen, and Roman Relge. "Investigation on the Microstructure of ECAP-Processed Iron-Aluminium Alloys." Materials 14, no. 1 (January 5, 2021): 219. http://dx.doi.org/10.3390/ma14010219.

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The present work deals with adjusting a fine-grained microstructure in iron-rich iron-aluminium alloys using the ECAP-process (Equal Channel Angular Pressing). Due to the limited formability of Fe-Al alloys with increased aluminium content, high forming temperatures and low forming speeds are required. Therefore, tool temperatures above 1100 °C are permanently needed to prevent cooling of the work pieces, which makes the design of the ECAP-process challenging. For the investigation, the Fe-Al work pieces were heated to the respective hot forming temperature in a chamber furnace and then formed in the ECAP tool at a constant punch speed of 5 mm/s. Besides the chemical composition (Fe9Al, Fe28Al and Fe38Al (at.%—Al)), the influences of a subsequent heat treatment and the holding time on the microstructure development were investigated. For this purpose, the average grain size of the microstructure was measured using the AGI (Average Grain Intercept) method and correlated with the aforementioned parameters. The results show that no significant grain refinement could be achieved with the parameters used, which is largely due to the high forming temperature significantly promoting grain growth. The holding times in the examined area do not have any influence on the grain refinement.

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35

Dubourg, L., F. Hlawka, and A. Cornet. "Study of aluminium–copper–iron alloys: application for laser cladding." Surface and Coatings Technology 151-152 (March 2002): 329–32. http://dx.doi.org/10.1016/s0257-8972(01)01591-2.

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36

Bernst, R., A. Schneider, and M. Spiegel. "Metal dusting of binary iron aluminium alloys at 600 °C." Materials and Corrosion 57, no. 9 (September 2006): 724–28. http://dx.doi.org/10.1002/maco.200503955.

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37

Rana, Radhakanta, and Cheng Liu. "Thermoelectric power in low-density interstitial-free iron-aluminium alloys." Philosophical Magazine Letters 93, no. 9 (September 2013): 502–11. http://dx.doi.org/10.1080/09500839.2013.813981.

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38

Schmid, F., and K. Binder. "Modelling order-disorder and magnetic transitions in iron-aluminium alloys." Journal of Physics: Condensed Matter 4, no. 13 (March 30, 1992): 3569–88. http://dx.doi.org/10.1088/0953-8984/4/13/019.

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39

Klöwer, Jutta, and Gerhard Sauthoff. "Creep Behaviour of Directionally Solidified Lamellar Nickel-Iron-Aluminium Alloys." International Journal of Materials Research 83, no. 9 (September 1, 1992): 699–704. http://dx.doi.org/10.1515/ijmr-1992-830911.

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40

Gheno, Thomas, Huan Li, Jian Qiang Zhang, and David J. Young. "High Temperature Corrosion of Fe-Cr, Fe-Al, Fe-Si and Fe-Si-Al Alloys in CO₂-H₂O Gases." Materials Science Forum 654-656 (June 2010): 1948–51. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.1948.

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Iron and model alloys containing 2.25, 9, and 20 wt% Cr, 2, 4 and 6 wt% Al, 1, 2 and 3 wt% Si, and dilute Fe-Si-Al ternaries were reacted in dry and wet Ar-CO2 gases at 800°C. External oxide scales grew on Fe according to fast, linear kinetics in dry CO2. Additions of H2O accelerated the reaction until steady-state parabolic kinetics were achieved. High Cr content alloys developed slow-growing chromium-rich oxide scales. Dry CO2 mixtures produced faster rates than wet gas mixtures. Lower Cr alloys developed thicker iron oxide scales, featuring cavities, cracks and poor adherence, and sustained internal oxidation. The presence of H2O led to even higher oxidation rates. Aluminium additions to iron of up to 4 wt% provided no protection, but instead caused internal oxidation. A level of 6 wt% significantly slowed oxidation by forming a continuous Al2O3 layer. Silicon additions had little effect, apart from promoting internal oxidation. However, simultaneous alloying with aluminium and silicon strongly depressed corrosion rates. The effectiveness of different alloy additions is discussed, along with the effects of water vapour and carbon activities, in the context of oxyfuel combustion technology.

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41

Xiufang, Bian, Chang Guohua, and Ma Jiaji. "A Master Alloy for the Spheroidisation of Needle-form Iron Compounds in Aluminium Alloys." Cast Metals 6, no. 3 (November 1993): 159–61. http://dx.doi.org/10.1080/09534962.1993.11819143.

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42

Wang, Wen Yan, Jing Pei Xie, A. H. Wang, Wei Li, and Zhong Xia Liu. "Resistance of the Transitional Region of Laser-Clad Coating on Electrolytic Low Titanium Aluminium Alloys to Multiple Impact Loading." Key Engineering Materials 336-338 (April 2007): 2592–94. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2592.

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A multiple impact loading experiment was designed to investigate the cracking behavior in the transitional regions of laser-clad iron base alloy on an electrolytic low titanium aluminium alloys under multiple impact loading in this study. The concept of TCR (transitional crack ratio) was introduced to evaluate the crack resistance of the transitional regions to multiple impact loading (impact resistance). Results showed that the substrate temperature during laser cladding process and the scanning velocity have significant influences on the microstructure of the transitional regions and then the impact resistances of the laser-clad iron alloy coating. The laser-clad iron base alloy coatings obtained at the substrate temperature within 275 ~ 320°C displayed the best impact resistance. Furthermore, the crack mechanism in the transitional regions was analyzed.

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43

Bolibruchová, D., and M. Žihalová. "Vanadium Influence on Iron Based Intermetallic Phases in AlSi6Cu4 Alloy." Archives of Metallurgy and Materials 59, no. 3 (October 28, 2014): 1029–32. http://dx.doi.org/10.2478/amm-2014-0172.

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Abstract Negative effect of iron in Al-Si alloys mostly refers with iron based intermetallic phases, especially Al5FeSi phases. These phases are present in platelet-like forms, which sharp edges are considered as main cracks initiators and also as contributors of porosity formation. In recent times, addition of some elements, for example Mn, Co, Cr, Ni, V, is used to reduce influence of iron. Influence of vanadium in aluminium AlSi6Cu4 alloy with intentionally increased iron content is presented in this article. Vanadium amount has been graduated and chemical composition of alloy has been analysed by spectral analysis. Vanadium influence on microstructural changes was evaluated by microstructural analysis and some of intermetallic particles were reviewed by EDX analysis.

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44

Mola, R., T. Bucki, and K. Wcisło. "Characterization of Coatings on Grey Cast Iron Fabricated by Hot-dipping in Pure Al, AlSi11 and AlTi5 Alloys." Archives of Foundry Engineering 14, no. 1 (March 1, 2014): 85–90. http://dx.doi.org/10.2478/afe-2014-0020.

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Abstract Flake graphite cast iron was hot-dip coated with pure aluminium or aluminium alloys (AlSi11 and AlTi5). The study aimed at determining the influence of bath composition on the thickness, microstructure and phase composition of the coatings. The analysis was conducted by means of an optical microscope and a scanning electron microscope with an EDS spectrometer. It was found that the overall thickness of a coating was greatly dependent on the chemical composition of a bath. The coatings consisted of an outer layer and an inner intermetallic layer, the latter with two zones and dispersed graphite. In all the cases considered, the zone in the inner intermetallic layer adjacent to the cast iron substrate contained the Al5Fe2 phase with small amount of silicon; the interface between this phase and the cast iron substrate differed substantially, depending on the bath composition. In the coatings produced by hot-dipping in pure aluminium the zone adjacent to the outer layer had a composition similar to that produced from an AlTi5 bath, the Al3Fe phase was identified in this zone. The Al3Fe also contained silicon but its amount was lower than that in the Al5Fe2. In the coatings produced by hot-dipping in AlSi11, the zone adjacent to the outer layer contained the Al3FeSi phase. The analysis results showed that when AlSi11 alloy was applied, the growth mode of the inner layer changed from inwards to outwards. The interface between the Al5Fe2 phase and the cast iron substrate was flat and the zone of this phase was very thin. Locally, there were deep penetrations of the Al5FeSi phase into the outer layer, and the interface between this phase and the outer layer was irregular. Immersion in an AlTi5 bath caused that the inner intermetallic layer was thicker than when pure aluminium or AlSi11 alloy baths were used; also, some porosity was observed in this layer; and finally, the interface between the inner layer and the cast iron substrate was the most irregular

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45

Salamon, Marcel, and Helmut Mehrer. "Interdiffusion, Kirkendall effect, and Al self-diffusion in iron–aluminium alloys." Zeitschrift für Metallkunde 96, no. 1 (January 2005): 4–16. http://dx.doi.org/10.3139/146.018071.

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46

Mackay, R. I., and J. E. Gruzleski. "Quantification of iron in aluminium-silicon foundry alloys via thermal analysis." International Journal of Cast Metals Research 10, no. 3 (November 1997): 131–45. http://dx.doi.org/10.1080/13640461.1997.11819228.

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47

Soiński, M. S., and A. Jakubus. "The Influence of Small Amounts of Aluminium on the Effectiveness of Cast Iron Spheroidization with Magnesium." Archives of Foundry Engineering 13, no. 3 (September 1, 2013): 80–83. http://dx.doi.org/10.2478/afe-2013-0064.

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Abstract The influence of aluminium added in amounts of about 1.6%, 2.1%, or 2.8% on the effectiveness of cast iron spheroidization with magnesium was determined. The cast iron was melted and treated with FeSiMg7 master alloy under industrial conditions. The metallographic examinations were performed for the separately cast rods of 20 mm diameter. They included the assessment of the shape of graphite precipitates and of the matrix structure. The results allowed to state that the despheroidizing influence of aluminium (introduced in the above mentioned quantities) is the stronger, the higher is the aluminium content in the alloy. The results of examinations carried out by means of a computer image analyser enabled the quantitative assessment of the considered aluminium addition influence. It was found that the despheroidizing influence of aluminium (up to about 2.8%) yields the crystallization of either the deformed nodular graphite precipitates or vermicular graphite precipitates. None of the examined specimens, however, contained the flake graphite precipitates. The results of examinations confirmed the already known opinion that aluminium widens the range of ferrite crystallization.

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Kopyciński, D. "Effect of Ti, Nb, Cr and B on Structure and Mechanical Properties of High Aluminium Cast Iron." Archives of Foundry Engineering 13, no. 1 (March 1, 2013): 77–80. http://dx.doi.org/10.2478/afe-2013-0015.

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Abstract In this work, a method was investigated to eliminate the presence of undesirable Al4C3 phases in a high-aluminium alloys, and thus improve the production process. The melting conditions employed in this work enabled the formation of a Fe-Al-C liquid solution. Moreover, titanium additions into the liquid allowed the precipitation of TiC. According to this reaction, the extent of carbon removal from the melt is strongly influenced by the amount of Ti additions. Hence, proper titanium levels can result in total removal of carbon from the liquid. Notice from this figure that Ti additions above 4.5%, totally eliminate the undesirable Al4C3 precipitates. Making Cr, Ti, B additions reduces size of FeAl alloys grains. In addition, this work indicates that the high-aluminium cast iron posses high oxidation resistance, exceeding that of high-chromium cast iron and chromium cast steels. Finally, the alloy ductility can be enhanced by additions of dopants such as B and Cr. Hence, additions of 0.03% B and 0.03%B-5% Cr combined with a heat treatment were implemented. As a result, the alloy ductility was significantly improved, where the strain of up to 5.3%, (B alone) or 15% (B-Cr) were obtained.

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Giridhar, P., B. Weidenfeller, S. Zein El Abedin, and F. Endres. "Electrodeposition of iron and iron–aluminium alloys in an ionic liquid and their magnetic properties." Physical Chemistry Chemical Physics 16, no. 20 (2014): 9317. http://dx.doi.org/10.1039/c4cp00613e.

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Wang, Naixing, Weian Liang, and Ping Qi. "Simultaneous third-derivative spectrophotometric determination of copper and nickel in iron alloys and aluminium alloy." Talanta 40, no. 6 (June 1993): 897–99. http://dx.doi.org/10.1016/0039-9140(93)80048-v.

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