Relevant bibliographies by topics / Intermetallic phases

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  1. Journal articles
  2. Dissertations / Theses
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  4. Book chapters
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Academic literature on the topic 'Intermetallic phases'

Author: Grafiati
Published: 4 June 2021
Last updated: 24 August 2024

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Journal articles on the topic "Intermetallic phases"

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Schütz, Max, Christian Gemel, Wilhelm Klein, Roland A. Fischer, and Thomas F. Fässler. "Intermetallic phases meet intermetalloid clusters." Chemical Society Reviews 50, no. 15 (2021): 8496–510. http://dx.doi.org/10.1039/d1cs00286d.

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Sauthoff, Gerhard. "Intermetallic phases." Advanced Materials 1, no. 2 (1989): 53–55. http://dx.doi.org/10.1002/adma.19890010205.

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Sauthoff, Gerhard. "Intermetallic Phases." Angewandte Chemie 101, no. 2 (February 1989): 251–53. http://dx.doi.org/10.1002/ange.19891010249.

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Sauthoff, Gerhard. "Intermetallic Phases." Angewandte Chemie International Edition in English 28, no. 2 (February 1989): 243–45. http://dx.doi.org/10.1002/anie.198902431.

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Li, G. Y., and Y. C. Chan. "An Investigation of Intermetallics Formation Between Pd/Ag Metallization and Sn/Pb/Ag Solder." Journal of Electronic Packaging 124, no. 3 (July 26, 2002): 305–10. http://dx.doi.org/10.1115/1.1486012.

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Intermetallics formation between metallization conductor Pd-Ag and solder 62Sn-36Pb-2Ag have been investigated by transmission electron microscopy (TEM) and X-Ray diffraction. Energy-dispersive X-Ray (EDX) analysis and Selected Area Electron Diffraction (SAED) analysis reveals the formation of the intermetallic compounds Ag5Sn,Ag3Sn,Pd2Sn,PdSn2,PdSn4, and PbPd3. X-Ray diffraction results confirm the coexistence of the above metallurgical phases and additional intermetallic compounds including Pd3Sn2, PdSn, and Pb3Pd5. Evident single phase intermetallic compound (IMC) layer structure is not observed. The different intermetallic phases coexist near the metallization/solder interface. Silver-tin intermetallic compounds are also observed in the solder.
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Dshemuchadse, Julia, and Walter Steurer. "More statistics on intermetallic compounds – ternary phases." Acta Crystallographica Section A Foundations and Advances 71, no. 3 (April 29, 2015): 335–45. http://dx.doi.org/10.1107/s2053273315004064.

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How many different intermetallic compounds are known so far, and in how many different structure types do they crystallize? What are their chemical compositions, the most abundant ones and the rarest ones? These are some of the questions we are trying to find answers for in our statistical analysis of the structures of the 20 829 intermetallic phases included in the databasePearson's Crystal Data, with the goal of gaining insight into some of their ordering principles. In the present paper, we focus on the subset of 13 026 ternary intermetallics, which crystallize in 1391 different structure types; remarkably, 667 of them have just one representative. What makes these 667 structures so unique that they are not adopted by any other of the known intermetallic compounds? Notably, ternary compounds are known in only 5109 of the 85 320 theoretically possible ternary intermetallic systems so far. In order to get an overview of their chemical compositions we use structure maps with Mendeleev numbers as ordering parameters.
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Mrówka-Nowotnik, Grazyna, and Jan Sieniawski. "Analysis of Intermetallic Phases in 2024 Aluminium Alloy." Solid State Phenomena 197 (February 2013): 238–43. http://dx.doi.org/10.4028/www.scientific.net/ssp.197.238.

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The main objective of this study was to analyze the evolution of the microstructure (morphology, composition and distribution of intermetallic phases) in the 2024 aluminium alloy cooled with different cooling rates after solidification process. A few techniques: optical light microscopy (LM), scanning (SEM) electron microscopy combined with an energy dispersive X-ray microanalysis (EDS), X-ray diffraction (XRD) were used to identify intermetallics in the examined alloy. The results show that the microstructure of 2024 aluminum alloys in as-cast condition consisted following intermetallic phases: Al2Cu, Al2CuMg, Al7Cu2Fe, Al4Cu2Mg8Si7, AlCuFeMnSi and Mg2Si.
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Mikolajczak, Piotr, and Lorenz Ratke. "Three Dimensional Morphology of Mn Rich Intermetallics in AlSi Alloys Investigated with X-Ray Tomography." Materials Science Forum 790-791 (May 2014): 335–40. http://dx.doi.org/10.4028/www.scientific.net/msf.790-791.335.

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Elementary Mn has a great importance as neutralizer of Fe intermetallics like β-Al5FeSi, which have detrimental effect on mechanical characteristics of AlSi alloys. Presence of Mn in AlSi alloys causes the formation of other intermetallic phases. To understand the effect of solidification conditions and fluid flow on the microstructure of AlSi-based alloys and the addition of Mn leading to Mn-based intermetallics, Al-5 wt pct Si 0.2/0.4/1.0 wt pct Mn alloys have been directionally solidified under defined thermal (gradient 3 K/mm, solidification velocity 0.02-0.12 mm/s) and fluid flow (rotating magnetic field 6 mT) conditions. The primary Al-phase and Mn-based intermetallic phases were studied using 3D X-ray tomography. The spatial morphology of primary phase and intermetallics were characterized with respect to different fluid flow and solidification conditions. The tomography has showed the 3D complicated structure of Mn phases developed.
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Mayappan, Ramani, Rosyaini A. Zaman, Zalina Z. Abidin, Fatinnajihah Alias Asmawati, and Mohd Nazree Derman. "Growth of Cu-Zn5 and Cu5Zn8 Intermetallic Compounds in the Sn-9Zn/Cu Joint during Liquid State Aging." Advanced Materials Research 173 (December 2010): 90–95. http://dx.doi.org/10.4028/www.scientific.net/amr.173.90.

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The phase and intermetallic thickness of Cu-Zn5 and Cu5Zn8 has been investigated under liquid state aging using reflow method. Both intermetallics were formed by reacting Sn-9Zn lead free solder with copper substrate. Scanning electron microscope (SEM) was used to see the morphology of the phases and energy dispersive x-ray (EDX) was used to estimate the elemental compositions of the phases. The morphology of the Cu5Zn8 phase was rather flat but when the soldering temperature and time increases, the morphology becomes scallop. Intermetallic thickness measurements show that the thickness of Cu-Zn5 decreases with increasing soldering time and temperature. Whereas, the thickness of Cu5Zn8 intermetallic increases with soldering time and temperature.
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Kozlov, Kirill, Valery Shabashov, Natalya Kataeva, Victor Sagaradze, Vitalii Pilyugin, and Andrey Zamatovskii. "Deformation–Induced Mechanical Synthesis of U and Fe." Metals 14, no. 1 (December 31, 2023): 55. http://dx.doi.org/10.3390/met14010055.

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The phase composition of metallic α-U and Fe after mechanical synthesis in conditions of severe (mega) plastic deformation at room temperature using rotational Bridgman anvils was studied using Mössbauer spectroscopy, scanning and transmission electron microscopy. It was shown that mechanical synthesis results in U6Fe and UFe2 intermetallic formation with a precursor represented by UFe2(D) and UFe3(D) defective phases and a defective dispersed mechanical mixture of iron and uranium. Low-level annealing at 300 °C results in the ordering of the defective phases and transition of a dispersed mechanical mixture of iron and uranium into U6Fe and UFe2 intermetallics. The diffusion mechanism of intermetallic formation in conditions of cold deformation of iron and uranium mixture was established, and the high deformation and thermal phase stability of intermetallics U6Fe and UFe2 was shown.
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Dissertations / Theses on the topic "Intermetallic phases"

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Klepser, Cheryl Ann. "Growth of intermetallic phases at low temperature." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38762.

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Chen, Chun-Liang. "Characterisation of intermetallic phases in multicomponent Al-Si alloys for piston applications." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/7834.

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Al-Si based casting alloys are widely used for piston applications. This is due to their combination of properties, which include good castability, high strength, light weight, good wear resistance and low thermal expansion. In order for such alloys to meet increasingly demanding operational requirements, such as higher service temperatures and pressures, multicomponent Al-Si alloys, which contain several other alloying additions (Cu, Ni, Mg, Mn and Fe), have been used to further enhance the high temperature strength and fatigue resistance. Improved material properties are strongly dependent upon the morphologies, the thermal and mechanical properties, and the distribution of the intermetallic phases present in these alloys, which are in turn a function of alloy composition and cooling rate. Therefore, the main aim of this work was to characterise the many complex intermetallic phases in multicomponent Al-Si alloys. Five main areas of interest were investigated in this research. Firstly, thermodynamic modelling has been used to predict phase formation in complex alloys, which has been compared with measurements from differential scanning calorimetry (DSC). Secondly, the presence of additional elements in multicomponent Al-Si alloy systems allow many complex intermetallic phases to form, which make microstructural characterisationn on-trivial, as some of the phases have either similar crystal structures or exhibit subtle changes in their chemistries. A combination of electron backscatter diffraction (EBSD) and energy dispersive X-ray analysis (EDX) have therefore been used for discrimination between the various phases. It is shown that this is a powerful technique for microstructure characterisation and provides detailed information which can be related to the microstructuree volution during initial casting and subsequent heat treatment. Additionally, the complex morphologies of intermetallics have also been observed using 3D X-ray tomography. In this present work, a number of different experimental techniques were used to provide a rapid means of phase discrimination in order to validate microstructural evolution models. Thirdly, the mechanical properties of individual intermetallics have been investigated as a function of temperature using high -temperature nanoindentation. In particular, the hardness and modulus of a number of phases have been measured for a range of alloy compositions. The creep behaviour of intermetallic phases was also investigated, since this is important in the determination of the high temperature mechanical properties of alloys. Fourthly, the coefficients of thermal expansion of intermetallic phases were measured by high temperature X-ray diffraction, and thermal expansion anisotropy was also explored to investigate the formation of microcracking. Finally, in order to investigate the effect of both applied mechanical and thermal loads on the formation of cracks, Eshelby modelling has been used to predict the internal stresses of the different intermetallic phases and alloys, with the aid of the experimental data obtained in this work. The phase identity, composition, and the corresponding physical and mechanical properties can be used to inform alloy design strategies which, may facilitate the development of new alloys with improved properties.
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Eurich, Nikolai Carl. "First principles investigation of intermetallic phases and defects in Ni-base superalloys." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709196.

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Matsumoto, Jun. "Electrochemistry of intermetallic phases of Ni-Cr-Fe alloys in aqueous environment." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13439.

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Atteberry, Jennifer Eve. "A resonant ultrasound spectroscopy study of hydrogen-absorbing intermetallic compounds." Access citation, abstract and download form; downloadable file 11.43 Mb, 2004. http://wwwlib.umi.com/dissertations/fullcit/3131654.

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Reeder, Andrew J. "An investigation of aluminium intermetallic phases using ⁵⁷Fe Mössbauer spectroscopy and complementary techniques." Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/20269/.

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Pure intermetallic compounds Al3Fe, AlmFe, AlxFe, ac-AlFeSi, and Al6(Fe,Mn) have been extracted from Bridgman grown model aluminium alloys by dissolving the aluminium matrix in butanol. The resultant transmission Mdssbauer spectra for each intermetallic compound were interpreted according to their crystal structure. Variable temperature 57Fe Mdssbauer studies have enabled the Debye temperature thetaD of each compound to be determined. The crystal structure of Al3Fe contains five different Fe sites within the unit cell. Four of the iron, Fe(l)-Fe(4), sites are approximately identical and produced a thetaD = 434 +/- 5 K. The remaining Fe site, Fe(5), produced a thetaD = 488 +/- 5 K, and the combined spectral areas a 3D = 452 +/- 5 K. There is only one individual site within the crystal structures of AlmFe, AlxFe, and Al6(Fe,Mn), which produced a thetaD of 358 +/- 5 K, 360 +/- 5 K, and 352 +/- 5 K respectively. The ternary intermetallic compound, ac-AlFeSi, has two different Fe sites within the unit cell. Fe(l) had a thetaD - 291 +/- 5 K, and Fe(2) thetaD = 329 +/- 5 K. The combined spectral areas of these two sites produced a thetaD = 311 +/- 5 K. The variation in the OD values was attributed to changes in the Al-Fe shortest bond within the Fe centred A1 polyhedra. The Fe centred A1 polyhedra are a common feature of all the intermetallic compounds studied. The iron atom in all the intermetallic compounds may have existed in a Fe2+ oxidation state. A Direct Chill-cast ingot was grown and two samples, A and B, were taken from regions within the ingot containing a mixture of two intermetallic compounds. Alloy sample A was found to contain the intermetallic compound combination Al3Fe + Al6Fe. The intermetallic combination Al6Fe + ac- AlFeSi was found to exist in alloy sample B. Transmission Mdssbauer spectroscopy was performed on the extracted phases and the insitu phases to determine the relative proportions of the intermetallic compounds within the two alloy samples. Alloy sample A had 50:50 +/- 5 % Al3Fe + Al6Fe, whereas alloy sample B had 30:70 +/- 5 % Al6Fe + ac-AlFeSi. The surface of alloy sample B was investigated using several surface techniques, CEMS, SAAES, and SAXPS, to determine whether the same relative proportions existed in the surface, and near surface, regions of the sample. A region of very fine amorphous iron super-paramagnetic grains were to dominate the near surface region of the sample, which was present due to selective oxidation of the Al6Fe intermetallic compound. This was then removed when the surface of the alloy sample was KI electro-etched, which had the effect of leaving the intermetallic particles standing proud of the surface. The CEMS technique identified that the Al6Fe + ac-AlFeSi existed in a 80:20 +/- 5 %. This change in phase ratio after the KI electro-etch process was attributed to the preferential etching of the ac-AlFeSi aluminium intermetallic compound.
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Gunn, Robert Neil. "The effect of thermal cycles on the microstructure and toughness of superduplex stainless steels." Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/8418.

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Heymann, Gunter. "Synthetic Investigations in Borates, Borate Germanates, Gallium Oxonitrides, and Intermetallic Phases at Extreme Conditions." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-75784.

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Roberts, Tracey. "The structure and stability of high temperature intermetallic phases for application within coating systems." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4499.

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The reduction of noise and emissions is becoming increasingly important in civil aircraft jet engines as well as requirements for reduced fuel consumption and improved efficiency. This has resulted in the drive towards increasing turbine entry temperatures and the development of thermal barrier coatings (TBCs). Due to the effectiveness of the platinum-modified nickel aluminides currently used as bond coat layers for Ni-based superalloy TBCs, higher temperature ruthenium-containing bond coat layers are being examined as a possible low cost alternative to platinum. Rolls Royce have a patented process, whereby precious metal layers directly react with single crystal substrate alloys to form an aluminium containing surface coating. The aluminium is sourced from the single crystal alloy and the coating so formed has a + structure, but contains other intermetallic phases due to the reaction between the coating and the single crystal substrate. This bond coat layer acts as a diffusion barrier, which limits interdiffusion between the coating and the substrate. The aim of this research was to examine the stability of various phases within platinum and ruthenium-containing multilayer systems formed during the above reaction process and to determine the most stable intermetallics for inclusion in future coating systems. Foil samples were manufactured using multilayer sputter coating methods and the exothermic formation of these phases was examined using differential scanning calorimetry. The identification of the phases formed was carried out using X-ray diffraction. It was found that the interdiffusion between the initial multi-layers had been incomplete during the samples heat treatment, and so more intermetallic phases formed in some samples than aimed for. Hence, from the large number of samples studied it was shown that, as a result of kinetic factors, the reaction onset (or trigger) temperature was not related to the enthalpy of the intermetallic phases formed or the sample compositions within a target phase field. For the β-phase (NiAl) type intermetallic systems, the samples that produced the highest enthalpy values (i.e. the most stable intermetallic compounds) were those with the nominal compositions (in atomic %) of; ‘47Ni53Al’, ‘48Ni6Pt46Al’ and ‘51Ni7Ru42Al’. For the γ΄-phase (Ni3Al) type intermetallic systems, the highest enthalpy values were from samples with nominal compositions of ‘60Ni16Pt24Al’ and ‘74Ni5Ru24Al’
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Kaganovskii, Yuri, Lyudmila N. Paritskaya, and Valeriy V. Bogdanov. "Lateral diffusion spreading of two competitive intermetallic phases along free surface (system Cu-Sn)." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-193701.

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Books on the topic "Intermetallic phases"

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P, Villars, ed. Pearson's handbook: Crystallographic data for intermetallic phases. Materials Park, OH: ASM International, 1997.

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Daams, J. L. C. Atlas of crystal structure types for intermetallic phases. Materials Park, OH: ASM International, 1991.

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Pearson, W. B. Pearson's handbook of crystallographic data for intermetallic phases. Ohio: American Soceity for metals, 1985.

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Daams, J. L. C. Atlas of crystal structure types for intermetallic phases. Materials Park, OH: ASM International, 1991.

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Villars, P. Pearson's handbook of crystallographic data for intermetallic phases. 2nd ed. Materials Park, OH: ASM International, 1991.

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Daams, J. L. C. Atlas of crystal structure types for intermetallic phases. Materials Park, OH: ASM International, 1991.

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Daams, J. L. C. Atlas of crystal structure types for intermetallic phases. Materials Park, OH: ASM International, 1991.

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Daams, J. L. C. Atlas of crystal structure types for intermetallic phases. Materials Park, OH: ASM International, 1991.

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D, Calvert L., and Pearson W. B, eds. Pearson's handbook of crystallographic data for intermetallic phases. Metals Park, Oh: American Society for Metals, 1985.

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Hellner, E. Structure type descriptions for intermetallic phases in the monoclinic system. Karlsruhe: Fachinformationszentrum Karlsruhe, 1993.

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Book chapters on the topic "Intermetallic phases"

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Schoß, Johannes Paul, Andreas Keßler, Claudia Dommaschk, Michal Szucki, and Gotthard Wolf. "Precipitation of Iron-Containing Intermetallic Phases from Aluminum Alloys by Metal Melt Filtration." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration, 787–813. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_31.

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AbstractIron (Fe) provides a non-reactive dissolved impurity in aluminum (Al) alloys, which forms a coarse, plate-shaped intermetallic β-phase during solidification. This β-phase is detrimental to the mechanical and casting properties. Therefore, the reduction of Fe by binding in Fe-containing intermetal-lics (sludge phase) was realized via a two-stage procedure, which consisted of conditioning of the melt by manganese (Mn) and chromium (Cr) with subsequent-ly applied metal melt filtration. For this purpose, the formation characteristics of the Fe-rich intermetallic phases were investigated regarding the temperature, time, and initial chemical composition to separate these intermetallics from the residual melt. To evaluate the different process parameters of Fe removal for a potential implementation in lightweight metal foundries, a process technology on an indus-trial scale was developed in cooperation with an industrial partner. The examina-tion of samples in optical microscopy (OM) using image analysis were conducted to determine the area fractions of Fe-rich intermetallics. In addition, optical emis-sion spectrometer (OES) measurements were performed. Complementary investi-gations were achieved by scanning electron microscopy (SEM), with energy dis-persive spectroscopy (EDS), and electron backscatter diffraction (EBSD) to measure the partial chemical composition and for phase identification. The for-mation characteristics of the Fe-containing phases were investigated using DSC cooling curves and selective sampling in quenching experiments. In the experi-mental trials, a maximum reduction of iron of ≈50% was revealed compared to the unfiltered sample, whereby greater influence on the formation of α-intermetallics was inferred by temperature than by time. Moreover, the elements Mn and Cr were reduced by about 66% and 86% at 620 °C, respectively, thus, the element contents in the filtered samples approached the chemical composition of the standard alloy (EN-AC-AlSi9Cu3(Fe)).
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Sevov, Slavi C. "Zintl Phases." In Intermetallic Compounds - Principles and Practice, 113–32. Chichester, UK: John Wiley & Sons, Ltd, 2002. http://dx.doi.org/10.1002/0470845856.ch6.

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Hubberstey, P. "Phase Diagrams, Intermetallic Phases and Compounds." In Inorganic Reactions and Methods, 316. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145289.ch113.

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Hubberstey, P. "Phase Diagrams, Intermetallic Phases and Compounds." In Inorganic Reactions and Methods, 322. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145289.ch121.

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Weidner, Anja, Ruben Wagner, Mikhail Seleznev, and Horst Biermann. "Analysis of Detrimental Inclusions in Steel and Aluminum." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration, 645–77. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_25.

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AbstractThis chapter presents results on the analysis of nonmetallic as well as intermetallic inclusions within a metal matrix. In both, steel and aluminum matrix these impurities cause detrimental effects during production as well as in service, e.g. under mechanical load. In steel, nonmetallic inclusions originate from the steelmaking process and range in the magnitude of ppm. In recycled aluminum alloys, iron-rich intermetallic phases exhibit a volume fraction in the range of percent caused by insufficient scrap separation. Both types of detrimental inclusions/precipitates were investigated within different materials such as case hardening steel, quenched and tempered steel as well as Al-Si cast alloy. In order to reduce the amount of impurities, the effects of appropriate crucible materials, reactive and active melt filtration and chemical composition of the used materials were studied. Therefore, extensive metallographic investigations on sections were conducted with optical microscopy, manual and automated scanning electron microscopy, focused ion beam preparation and transmission electron microscopy aiming to determine the compositions of inclusions and intermetallic phases. Focusing on the morphology of inclusions and intermetallic phases, experiments with electrolytic and chemical extraction as well as X-ray micro tomography were performed. The gained knowledge can be utilized to improve filtration and reduce volume fraction and size of nonmetallic inclusions and intermetallic phases. This enables the design of long-lasting and safe materials.
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Becker, Hanka, and Andreas Leineweber. "Dealing with Fe in Secondary Al-Si Alloys Including Metal Melt Filtration." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration, 191–213. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_8.

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AbstractFe is a detrimental impurity element in secondary, i. e. recycled, Al–Si cast alloys (Zhang et al. in Miner. Process. Extr. Metall. Rev. 33:99, 2012;Raabe et al. in Prog. Mater. Sci. 128, 2022;). It leads to decrease of castability and promotes crack formation due to formation of primary, Fe-containing intermetallic particles, e.g. plate-shaped β-Al–Fe–Si, coarse αh-Al–Fe–Si or αc-Al–(Fe,Mn,Cr)–Si in presence of further transition metal elements e.g. Mn and Cr. Successfully, dealing with such secondary Al–Si cast alloys contributes to sustainability, circular economy and reduction of energy consumption (Raabe et al. in Prog. Mater. Sci. 128, 2022;Taylor in Mater. Sci. Forum 689:429, 2011;). In the present chapter, a systematic understanding is provided for dealing with Fe impurities in secondary Al–Si alloys by. removal of Fe on the basis of melt conditioning and metal melt filtration and modification of Fe-containing phases into harmless microstructural components. In this context new insight is obtained into. the crystal structures of some relevant intermetallic phases occurring in secondary Al–Si alloys, thermodynamics and kinetics of phase formation during solidification and the interaction of different filter materials with the transition metal containing Al–Si alloys. The crystal structures of the β-Al–Fe–Si and δ-Al–Fe–Si phases and of their ordered variants were investigated. This allowed reliable distinction of occurring intermetallic phases, the αh-Al–Fe–Si, the αc-Al–(Fe,Mn,Cr)–Si, the β-Al–Fe–Si and the δ-Al–Fe–Si phase, especially by electron backscatter diffraction. While modification of the alloy composition by the Mn, Cr content and presence of other transition metal elements affect the thermodynamic properties of the phases, these elements also significantly affect the kinetics of phase formation during solidification at high cooling rates including the resulting phase morphology. The formation of primary, intermetallic phases during melt conditioning closely above the solidification temperature of the (Al)-solid solution can be utilized for the removal of Fe by separating the primary, Fe-containing, intermetallic particles from the Fe-depleted Al melt. Removal of such particles by application of filters to increase the Fe-removal efficiency extends the filters’ use beyond the removal of nonmetallic inclusions, contributing to production of high-quality, recycled Al–Si alloys. Evaluation of wettability, chemical reactions and microstructure in the interaction region between the filter material and Al–Si melts and the Fe-depleted melt reveals a beneficial effect of C-bonded Al2O3 filter material.
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Mishra, Ratikant, and Rimpi Dawar. "Synthesis, Properties and Applications of Intermetallic Phases." In Handbook on Synthesis Strategies for Advanced Materials, 741–84. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1892-5_15.

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Luedtke, Arndt, Sabine Burr, Brigitte Stahl, Rex Harris, and Gerhard Schneider. "Intermetallic Phases in Fe-Nd-B-Al Diffusion Couples." In Intermetallics and Superalloys, 159–63. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607285.ch27.

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Romaka, V. V., P. F. Rogl, R. Carlini, and C. Fanciulli. "Prediction of the Thermoelectric Properties of Half-Heusler Phases from the Density Functional Theory." In Alloys and Intermetallic Compounds, 286–323. Boca Raton, FL : CRC Press, Taylor & Francis Group, 2017. | “A science publishers book.”: CRC Press, 2017. http://dx.doi.org/10.1201/9781315151618-10.

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Romaka, V., P. Rogl, R. Carlini, and C. Fanciulli. "Prediction of the Thermoelectric Properties of Half-Heusler Phases from the Density Functional Theory." In Alloys and Intermetallic Compounds, 286–323. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315151618-13.

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Conference papers on the topic "Intermetallic phases"

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Jana, Partha Pratim. "Complex Intermetallic Phases in Rh-Cd Binary System." In Aperiodic 2018 ("9th Conference on Aperiodic Crystals"). Iowa State University, Digital Press, 2018. http://dx.doi.org/10.31274/aperiodic2018-180810-21.

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Wilden, J., and H. Frank. "Formation of Intermetallic Phases by Laser Alloying of Thermally Sprayed Ti and Al Coatings for Enhanced Wear Resistance of Lightweight Materials." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p0475.

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Abstract Lightweight materials such as Al and Ti alloys tend to show poor wear resistance. However, laser alloying of thermally sprayed coatings can be used to form intermetallic phases within the surface area to overcome this disadvantage and to build a metallurgical bond between substrate and coating. Such phases formed in an exothermic reaction may show excellent corrosion behaviour and wear resistance. These reactions can be used to influence the surface properties by remelting metallic coatings on Al or Ti substrates. With respect to the wear behaviour, Ti and Al intermetallics are of great interest. Ti and Al alloys were coated by Al, Ti, and Ni respectively. The different structures on the surface of the alloys depend first on the laser processing parameters resulting in the overheated melt and as well as the latent heat of the formed intermetallic phases. The experimental results clearly show that for short dwell times the latent heat dominates the solidification process and that at high solidification rates the microstructure formation becomes nearly independent from the process parameters. This effect is of special interest for industrial applications as quality requirements ask for robust processes. The paper discusses the metallurgical fundamentals of intermetallic phases and the energy balance of the solidification while giving a deep insight into the influence of different process parameters. Lastly, the properties of alloyed surfaces are discussed.
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Bu, H., B. Jodoin, M. Yandouzi, and C. Lu. "Investigation of Heat Treatment on Cold Sprayed Aluminum Coatings on Magnesium Substrates with Different Status." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and A. McDonald. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0908.

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Abstract Large pure aluminum powders were deposited on as cast-, T4- and T6-AZ91D magnesium substrates using cold spray. Heat treatment was applied to the coated components under vacuum at 400°C for different holding time. The effects of the heat treatment on the microstructure as well as the coating/substrate adhesion strength were investigated. Thick (~ 400µm) and dense (<1% porosity) Al coatings have been obtained on the three different substrates. During heat treatment, Mg17Al12 (β) and Al3Mg2 (γ) intermetallic phases were formed at the Al/Mg interface and the thickness of the intermetallics layers increased with the holding time. No significant thickness difference of the intermetallics layers were observed on as cast- and T6-AZ91D substrates, while thicker layers took place on the T4- substrate. It is believed that the higher Al concentration within the T4-AZ91D material could be beneficial for intermetallic growth because less enrichment is required to reach the critical level for intermetallic formation in the substrate. Shear strength tests were performed on the as sprayed and after heat treatment coatings. The results revealed lower adhesion strength in the samples after heat treatment than the as sprayed ones which is attributed to the presence of brittle intermetallics layers at the coating/substrate interface.
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Barradas, S., F. Borit, V. Guipont, M. Jeandin, C. Bolis, M. Boustie, and L. Berthe. "Study of the Role of Cu-Al Intermetallics on the Adhesion of Plasma-Sprayed Copper on Aluminum using Laser Shock Adhesion Testing (LASAT)." In ITSC2002, edited by C. C. Berndt and E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2002. http://dx.doi.org/10.31399/asm.cp.itsc2002p0592.

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Abstract The adhesion of copper on aluminum depends on the presence of intermetallic phases. Such phases can form during spraying at the interface between the layer and substrate. This paper deals with the formation mechanism of the intermetallic phases and their influence on adhesion. The type, size, and distribution of the intermetallic phases are investigated as a function of spray parameters and bonding strength is determined by laser shock adhesion testing. Paper includes a German-language abstract.
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Davydov, D. I., N. V. Kazantseva, and I. V. Ezhov. "FORMATION OF INTERMETALLIC PHASES IN COBALT HEAT-RESISTANT ALLOYS." In ПРОБЛЕМЫ МЕХАНИКИ СОВРЕМЕННЫХ МАШИН. Улан-Удэ: Восточно-Сибирский государственный университет технологий и управления, 2022. http://dx.doi.org/10.53980/9785907599055_12.

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Narayanan, V., X. Lu, and S. Hanagud. "Shock-Induced Chemical Reactions in Multi-Functional Structural Energetic Intermetallic Nanocomposite Mixtures." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81636.

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Shock induced chemical reactions of intermetallics or mixtures of metal and metal-oxides are also used to synthesize new materials with unique phases and microstructures. These materials are also of significant interest to the energetics community because of the significant amount of heat energy released during chemical reactions when subjected to shock and/or thermal loading. Binary energetic materials are classified into two categories— metal/metal oxides and intermetallics. When these materials are synthesized at a nano level with binders and other structural reinforcements, the strength of the resulting mixture increases. Thus, these materials can be used as dual-functional binary energetic structural materials. In this paper, we study the shock-induced chemical reactions of intermetallic mixtures of nickel and aluminum of varying volume fractions of the constituents. The chemical reaction between nickel and aluminum produces different products based on the volume fraction of the starting nickel and aluminum. These chemical reactions along with the transition state are modeled at the continuum level. In this paper, the intermetallic mixture is impact loaded and the subsequent shock process and associated irreversible processes such as void collapse and chemical reactions are modeled in the framework of non-equilibrium thermodynamics. Extended irreversible thermodynamics (EIT) is used to describe the fluxes in this system and account for the associated irreversible processes. Numerical simulations of the intermetallic mixture are carried out using finite difference schemes.
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Wang, H. T., C. J. Li, G. J. Yang, C. X. Li, P. H. Gao, and Q. Zhang. "Formation of NiTi Intermetallics by Heat Treatment of Cold-Sprayed Precursor Coating." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1245.

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Abstract Nickel titanium is promising cavitation erosion resistant material. Using NiTi in bulk for components might not be feasible due to its poor workability, as well as the high material and processing costs. Surfacing components with its coating is effective for utilizing the good erosion properties of NiTi intermetallic compounds. In this study, a method to prepare NiTi intermetallic compound coatings in-situ through annealing of the cold-sprayed Ni(Ti) metastable coating was investigated. A nanostructured Ni(Ti) solid solution alloy powder was prepared by ball-milling process. The cold sprayed Ni(Ti) alloy coating was used as the precursor coating. The effect of annealing temperature on the microstructure in-situ evolution of Ni-Ti intermetallic compound in cold-sprayed coating was investigated. The morphology and phase composition of the powders milled for different durations and the microstructure of the as-sprayed coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that after annealing at 950°C the Ni(Ti) alloy was transformed to intermetallic phases. NiTi, Ni3Ti and NiTi2 intermetallic phases coexisted in the annealed coating.
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Nail, Carl. "Detection and Measurement of Intermetallic Thin Films Using EDX Line Scanning." In ISTFA 2015. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.istfa2015p0114.

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Abstract Elementally characterizing intermetallic compounds (IMCs) to identify phases has routinely required relatively expensive transmission electron microscopy (TEM) analysis. A study was done characterizing IMCs using less expensive energydispersive x-ray (EDX) spectroscopy tools to investigate it as a practical alternative to TEM. The study found that EDX line scanning can differentiate phases by tracking changes in count rate as the electron beam of a scanning electron microscope (SEM) passes from one phase to another.
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Fredrickson, Daniel C. "Chemical Driving Forces and Pathways for Incommensurability in Intermetallic Phases." In Aperiodic 2018 ("9th Conference on Aperiodic Crystals"). Iowa State University, Digital Press, 2018. http://dx.doi.org/10.31274/aperiodic2018-180810-16.

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Braunovic, M., L. Rodrigue, and D. Gagnon. "Nanoindentation Study of Intermetallic Phases in Al-Cu Bimetallic System." In 2008 IEEE Holm Conference on Electrical Contacts (Holm 2008). IEEE, 2008. http://dx.doi.org/10.1109/holm.2008.ecp.55.

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Reports on the topic "Intermetallic phases"

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Sassi, Michel JPC, David Senor, and Andrew Casella. Ab Initio Simulations of Tritium Diffusion in Al2O and Intermetallic Al12(TM)2.34 Aluminide Coating Phases. Office of Scientific and Technical Information (OSTI), September 2023. http://dx.doi.org/10.2172/2001006.

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Tsakalakos, T., S. Semenovskaya-Khachaturyan, and A. G. Khachaturyan. Progress report on DOE research project [Thermodynamic and kinetic behavior of systems with intermetallic and intermediate phases]. Office of Scientific and Technical Information (OSTI), December 2000. http://dx.doi.org/10.2172/809877.

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Fredrickson, Daniel C. Chemical Frustration. A Design Principle for the Discovery of New Complex Alloy and Intermetallic Phases, Final Report. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1193083.

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Chang, Y. A. Thermodynamic and kinetic stabilities of two-phase systems involving gallium arsenide and an intermetallic phase. Final report. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/604356.

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Jordan, A., O. N. C. Uwakweh, and P. J. Maziasz. Section 2: Phase transformation studies in mechanically alloyed Fe-Nz and Fe-Zn-Si intermetallics. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/494125.

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Kim, Young K., David K. Shuh, R. S. Williams, Larry P. Sadwick, and Kang L. Wang. A Study of Thermodynamic Phase Stability of Intermetallic Thin Films of Pt2Ga, PtGa and PtGa2 on Gallium Arsenide. Fort Belvoir, VA: Defense Technical Information Center, July 1989. http://dx.doi.org/10.21236/ada209698.

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Chu, F., T. E. Mitchell, S. P. Chen, M. Sob, R. Siegl, and D. P. Pope. Experimental and theoretical studies on the C15 intermetallic compounds MV{sub 2} (M = Zr, Hf and Ta): Elasticity and phase stability. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/10103495.

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