Log in

Relevant bibliographies by topics / AlSi12 alloy / Journal articles

To see the other types of publications on this topic, follow the link: AlSi12 alloy.

Journal articles on the topic 'AlSi12 alloy'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'AlSi12 alloy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Mola, Renata, and Tomasz Bucki. "Characterization of the Bonding Zone in AZ91/AlSi12 Bimetals Fabricated by Liquid-Solid Compound Casting Using Unmodified and Thermally Modified AlSi12 Alloy." Strojniški vestnik – Journal of Mechanical Engineering 66, no. 7-8 (July 15, 2020): 439–48. http://dx.doi.org/10.5545/sv-jme.2020.6703.

Full text

Abstract:

Liquid-solid compound casting was used to produce two types of AZ91/AlSi12 joints. The magnesium alloy was the cast material poured onto a solid aluminium alloy insert with an unmodified or modified structure. The bonding zone obtained for the unmodified insert was not uniform in thickness. There was a eutectic region (Mg17Al12 + a solid solution of Al in Mg) in the area closest to the AZ91. The region adjacent to the AlSi12 had a non-uniform structure with partly reacted Si particles surrounded by the Mg2Si phase and agglomerates of Mg2Si particles unevenly distributed in the Mg-Al intermetallic phases matrix. Cracks were detected in this region. In the AZ91/AlSi12 joint produced with a thermally modified AlSi12 insert, the bonding zone was uniform in thickness. The region closest to the AZ91 alloy also had a eutectic structure. However, significant microstructural changes were reported in the region adjacent to the modified AlSi12 alloy. The microstructure of the region was uniform with no cracks; the fine Mg2Si particles were evenly distributed over the Mg-Al intermetallic phase matrix. The study revealed that in both cases the microhardness of the bonding zone was several times higher than those of the individual alloys; however, during indenter loading, the bonding zone fabricated from modified AlSi12 alloy was less prone to cracking.

APA, Harvard, Vancouver, ISO, and other styles

2

Lipiński, T. "Effect of combinative cooled addition of strontium and aluminium on mechanical properties AlSi12 alloy." Journal of Achievements in Materials and Manufacturing Engineering 1, no. 83 (July 1, 2017): 5–11. http://dx.doi.org/10.5604/01.3001.0010.5134.

Full text

Abstract:

Purpose: The study was to determine the mechanical properties of hypo-eutectic silumin AlSi12 modified with Sr or Al-Sr alloy slow or fast cooled and in the form of a strip or powder. Design/methodology/approach: The experiment performed on EN AB-AlSi12 hypoeutectic alloy. Aluminium and strontium was melted and next fast cooled to room temperature or cooled on a metal plate at rates about 200°C/s. This enabled to produce a different components, which were powdered immediately before adding to the alloy or used as a strip. The scope of this paper was to verify the cooling effect of Sr-Al modifiers and its form (powder or strip) on the microstructure and mechanical properties the AlSi12 alloy. Findings: The use of fast cooled Al-Sr alloy in the modification process and/or powdered alloy contributed to a further increase mechanical properties AlSi12 alloy. Research limitations/implications: The modification alloys with fast cooled powdered modifier are attractive for future research. Practical implications: Widely presented books and research papers on the silumin treatment give not a lot of contents on the effect treatment fast cooled alloy in the form of a strip or powder. Originality/value: The original value of the paper is comparison Sr and Al-Sr alloy modifiers slow and fast cooled and used as a powder or strip.

APA, Harvard, Vancouver, ISO, and other styles

3

Hapçı Aǧaoǧlu, Gökçe, İnal Kaan Duygun, and Gökhan Orhan. "Investigation of time-dependent corrosion behavior of Sr-modified AlSi12 alloy." International Journal of Materials Research 111, no. 4 (May 1, 2020): 339–46. http://dx.doi.org/10.1515/ijmr-2020-1110410.

Full text

Abstract:

Abstract The effect of Sr addition on the microstructure and time-dependent corrosion properties of the AlSi12 eutectic alloy was investigated. The modified alloy contained 90 ± 3 ppm Sr. The microstructural differences in the eutectic structure of AlSi12 alloys were assessed in terms of the Si particle size and a-Al volume fraction. The unmodified and Sr-modified alloys were immersed for 1, 24, 72 and 120 h in 3.5 wt.% NaCl. Electrochemical impedance spectroscopy and potentiodynamic polarization techniques were performed to analyze the corrosion characteristics of the alloys. Sr addition led to a decrease in the Si particle size, and the formation of long dendritic a-Al. It was found that the presence of Sr resulted in more stable corrosion behavior up to 24 h. The deterioration of the corrosion behavior of Sr-modified alloy was observed with the further increase of immersion time.

APA, Harvard, Vancouver, ISO, and other styles

4

Kremzer, M., M. Dziekońska, M. Sroka, and B. Tomiczek. "Abrasive Wear of AlSi12-Al2O3 Composite Materials Manufactured by Pressure Infiltration." Archives of Metallurgy and Materials 61, no. 3 (September 1, 2016): 1255–60. http://dx.doi.org/10.1515/amm-2016-0207.

Full text

Abstract:

Abstract The aim of this study is to investigate tribological properties of EN AC-AlSi12 alloy composite materials matrix manufactured by pressure infiltration of Al2O3 porous preforms. In the paper, a technique of manufacturing composite materials was described in detail as well as wear resistance made on pin on disc was tested. Metallographic observations of wear traces of tested materials using stereoscopic and confocal microscopy were made. Studies allow concluding that obtained composite materials have much better wear resistance than the matrix alloy AlSi12. It was further proved that the developed technology of their preparation consisting of pressure infiltration of porous ceramic preforms can find a practical application.

APA, Harvard, Vancouver, ISO, and other styles

5

Baitimerov, R. M., and A. V. Bryk. "Selective Laser Melting AlSi12 Alloy by Utilizing of Non-Spherical Air-Atomized Powder." Solid State Phenomena 316 (April 2021): 558–63. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.558.

Full text

Abstract:

AlSi12 alloy is one of the most widely used materials in selective laser melting. Selective laser melting (SLM) of AlSi12 alloy has been well studied in recent years. Researchers typically use very expensive spherical powders atomized in an inert atmosphere. For this paper, we studied SLM of air-atomized non-spherical powder to determine its printability. Nine specimens were fabricated using different SLM process parameters. The lowest porosity that was achieved was 1.3%.

APA, Harvard, Vancouver, ISO, and other styles

6

Kovbasiuk, T. M., V. Yu Selivorstov, Yu V. Dotsenko, Z. A. Duriagina, V. V. Kulyk, O. M. Kasai, and V. V. Voitovych. "The effect of the modification by ultrafine silicon carbide powder on the structure and properties of the Al-Si alloy." Archives of Materials Science and Engineering 2, no. 101 (February 2, 2020): 57–62. http://dx.doi.org/10.5604/01.3001.0014.1191.

Full text

Abstract:

Purpose: Determine the possibility of modifying aluminium alloys of the Al-Si system with an ultrafine SiC modifier with a particle size of 3-5 μm. Design/methodology/approach: Processing of the Al-Si alloy was carried out by introducing an ultrafine modifier in the amount of 0.1, 0.2, or 0.3 wt.%. Silicon carbide (SiC) with a particle size in the range of 3-5 μm was used as a modifier. To study the microstructure of the formed surface layers, a metallographic analysis was performed according to the standard method on a microscope MIKPOTEX® MMT-14C using TopView software. Microhardness studies of the samples were carried out on a Vickers microhardness tester NOVOTEST TC-MKV1. The microstructure of castings of the AlSi12 grade was studied at magnification from 100 to 400 times on the horizontal and vertical surfaces of the samples after etching with a 2% NaOH aqueous solution. Findings: Aluminium cast alloy of Al-Si system has been synthesized with the addition of 0.1, 0.2, and 0.3 wt.% ultrafine SiC modifier. It was found that the modification of the AlSi12 alloy by SiC particles of 3-5 μm in size led to an improvement of its microstructure due to the reduction of the volume fraction of micropores and primary Si crystals. It was shown that the AlSi12 aluminium alloy due to the modification by 0.2 wt.% SiC has the best micromechanical properties and macrostructure density. Research limitations/implications: The obtained research results are relevant for cast specimens of the indicated sizes and shapes. The studies did not take into account the influence of the scale factor of the castings. Practical implications: The developed modification technology was recommended for use in the conditions of the foundry "Dnipropetrovsk Aggregate Plant" (Dnipro, Ukraine). Originality/value: The technology of AlSi12 alloy modification of ultrafine SIC modifier with a particle size of 3-5 μm was used for the first time.

APA, Harvard, Vancouver, ISO, and other styles

7

Uhlmann, E., and R. Jaczkowski. "Mechanical pretreatment before electroplating of aluminium alloy AlSi12." Surface and Coatings Technology 352 (October 2018): 483–88. http://dx.doi.org/10.1016/j.surfcoat.2018.07.099.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Indoitu, D. V., A. V. Gusarova, A. P. Zykova, T. A. Kalashnikova, A. V. Chumaevskii, D. A. Gurianov, and V. A. Beloborodov. "Friction Stir Processing Regularities of Cast Aluminum Alloy AlSi12." Journal of Physics: Conference Series 1989, no. 1 (August 1, 2021): 012030. http://dx.doi.org/10.1088/1742-6596/1989/1/012030.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lykov, P. A., and R. M. Baitimerov. "Selective Laser Melting of AlSi12 Powder." Solid State Phenomena 284 (October 2018): 667–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.667.

Full text

Abstract:

Additive manufacturing (AM) technologies make it possible to produce complex shape metallic objects from powder feedstock. AlSi12 alloy is one of the most widely used materials in selective laser melting (SLM). The large number of technological parameters involved complicate the selection of an SLM mode for obtaining a product with the required structure. The goal of this research was to determine the mode which ensures the material’s low porosity. Nine specimens were fabricated by using different SLM process parameters. The fabricated specimens have different microstructures. The lowest porosity that was achieved is about 0.5%.

APA, Harvard, Vancouver, ISO, and other styles

10

Quenard, Sébastien, and Marilyne Roumanie. "A Simple Method for a Protective Coating on Stainless Steel against Molten Aluminum Alloy Comprising Polymer-Derived Ceramics, Oxides and Refractory Ceramics." Materials 14, no. 6 (March 19, 2021): 1519. http://dx.doi.org/10.3390/ma14061519.

Full text

Abstract:

A new coating based on polymer-derived ceramics (PDC), oxides and refractory ceramic with a thickness of around 50 µm has been developed to improve the resistance corrosion of stainless steel substrate against molten aluminum alloy in a thermal energy storage (TES) system designed to run at high temperature (up to 600 °C). These coatings implemented by straightforward methods, like tape casting or paintbrush, were coated on planar and cylindrical stainless-steel substrates, pyrolyzed at 700 °C before being plunged for 600 and 1200 h in molten AlSi12 at 700 °C. The stainless-steel substrate appears healthy without intermetallic compounds, characteristic of molten aluminum alloy corrosion. The protective coating against AlSi12 corrosion shows excellent performance and appears interesting for TES applications.

APA, Harvard, Vancouver, ISO, and other styles

11

Kowalski, Mirosław, and Antoni Jankowski. "Advantages of using composite alloys for internal combustion engine pistons." Archives of Transport 55, no. 3 (September 30, 2020): 85–94. http://dx.doi.org/10.5604/01.3001.0014.4236.

Full text

Abstract:

Combustion engine pistons are subject to variable mechanical and thermal loads, and to variable deformations. The article presents the possibilities of using novel composite alloys for the construction of pistons for combustion engines. The novel alloys make it possible to meet high demands, especially for highly load designs, which practically cannot be met by conventional alloys used so far. These high requirements relate to the weight of the pistons, high temperature strength, alloy crystalline structure, abrasive wear resistance, dimensional stability. The requirements for pistons have an impact on the durability of the engine's operation, the level of noise emissions; exhaust gas blow-by into the crankcase, the level of emitted toxic exhaust components, mainly hydrocarbons. The research covered metallography (chemical composition, microstructure), material strength, abrasive wear, and thermal expansion. Investigations of the alloy crystallization process during casting were carried out using the Differential Thermal Analysis (DTA) method. The castings were used for metallographic tests. The strength of the samples was tested at room temperature (20° C) and elevated temperature (up to 350° C) on a testing machine equipped with a special climatic chamber. In particular, the article presents Thermal Derivative Analysis curves and representative microstructures of conventional AlSi12 alloy and the novel composite alloy; dependence of the tensile strength versus temperature for the samples of the novel alloy with various nickel content 2% and 4 %; comparison of the tensile strength for conventional alloy and the novel alloy at ambient and 250° C temperature; comparison of abrasive wear of samples, made of novel aluminium alloy and different cast iron; course of the linear expansion coefficient versus temperature for the conventional AlSi12 alloy with incorrect heat treatment; course of the linear expansion coefficient versus temperature for one of tested silumin alloy which expansion coefficient during sample cooling is smaller than during sample heating; course of the linear expansion coefficient versus temperature for the novel composite silumin alloy, after correct heat treatment. The great benefits of using this novel alloy and the introduction of novel alloying elements (in-Situ) have been confirmed in engine research.

APA, Harvard, Vancouver, ISO, and other styles

12

Tomiczek, B., M. Kujawa, G. Matula, M. Kremzer, T. Tański, and L. A. Dobrzański. "Aluminium AlSi12 alloy matrix composites reinforced by mullite porous preforms." Materialwissenschaft und Werkstofftechnik 46, no. 4-5 (April 22, 2015): 368–76. http://dx.doi.org/10.1002/mawe.201500411.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kazup, Agota, Viktor Karpati, Balazs Hegedus, and Zoltan Gacsi. "Semi-continuous casting and microstructure investigation of the AlSi12 alloy." IOP Conference Series: Materials Science and Engineering 903 (August 26, 2020): 012012. http://dx.doi.org/10.1088/1757-899x/903/1/012012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Pastirčák, R., J. Ščury, and J. Moravec. "The Effects of Pressure During the Crystallization on Properties of the AlSi12 Alloy." Archives of Foundry Engineering 17, no. 3 (September 1, 2017): 103–6. http://dx.doi.org/10.1515/afe-2017-0099.

Full text

Abstract:

Abstract The paper deals with the impact of technological parameters on the mechanical properties and microstructure in AlSi12 alloy using squeeze casting technology. The casting with crystallization under pressure was used, specifically direct squeeze casting method. The goal was to affect crystallization by pressure with a value 100 and 150 MPa. From the experiments we can conclude that operating pressure of 100 MPa is sufficient to influence the structural characteristics of the alloy AlSi12. The change in cooling rate influences the morphology of the silicon particles and intermetallic phases. A change of excluded needles to a rod-shaped geometries with significantly shorter length occurs when used gravity casting method. At a pressure of 100 MPa was increased of tensile strength on average of 20%. At a pressure of 150 MPa was increased of tensile strength on average of 30%. During the experiment it was also observed, that increasing difference between the casting temperature and the mold temperature leads to increase of mechanical properties.

APA, Harvard, Vancouver, ISO, and other styles

15

Konečná, Radomila, Stanislava Fintova, Gianni Nicoletto, and Enrica Riva. "High Temperature Fatigue Strength and Quantitative Metallography of an Eutectic Al-Si Alloy for Piston Application." Key Engineering Materials 592-593 (November 2013): 627–30. http://dx.doi.org/10.4028/www.scientific.net/kem.592-593.627.

Full text

Abstract:

Eutectic Al-Si alloys are typically used for the production of internal combustion engine pistons. A high-cycle, high-temperature fatigue characterization of AlSi12 alloy performed using specimens extracted from actual pistons is presented and discussed. Fatigue strength at 107 cycles were obtained at test temperatures of 250 °C, 300 °C and 350 °C. The fatigue strength reduction was quantified. The micro structural features were quantified by quantitative metallography and fatigue fracture surfaces inspected to identify the initiation causes.

APA, Harvard, Vancouver, ISO, and other styles

16

Lykov, P. A., A. O. Shults, and K. A. Bromer. "The Production and Subsequent Selective Laser Melting of AlSi12 Powder." Solid State Phenomena 265 (September 2017): 434–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.434.

Full text

Abstract:

The paper studies the atomization of Al-based alloy AlSi12 in gas jet. Air was used as a spraying gas. The size and shape of powder particles were studied by using scanning electron microscopy and optical granulomorphometer. The obtained powder was used in selective laser melting.

APA, Harvard, Vancouver, ISO, and other styles

17

Wang Xiaoyan, 王小艳, 陈静 Chen Jing, 林鑫 Lin Xin, 张方 Zhang Fang, and 黄卫东 Huang Weidong. "Microstructures of Laser Forming Repair 7050 Aluminum Alloy with AlSi12 Powder." Chinese Journal of Lasers 36, no. 6 (2009): 1585–90. http://dx.doi.org/10.3788/cjl20093606.1585.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Duygun, İnal Kaan, Gökçe Hapçı Ağaoğlu, and Gökhan Orhan. "Investigation of time-dependent corrosion behavior of Sr-modified AlSi12 alloy." International Journal of Materials Research 111, no. 4 (April 15, 2020): 339–46. http://dx.doi.org/10.3139/146.111882.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Winiowski, A., and D. Majewski. "Braze Welding TIG of Titanium and Aluminium Alloy Type Al – Mg." Archives of Metallurgy and Materials 61, no. 1 (March 1, 2016): 133–42. http://dx.doi.org/10.1515/amm-2016-0025.

Full text

Abstract:

The article presents the course and the results of technological tests related to TIG-based arc braze welding of titanium and AW-5754 (AlMg3) aluminium alloy. The tests involved the use of an aluminium filler metal (Al99.5) and two filler metals based on Al-Si alloys (AlSi5 and AlSi12). Braze welded joints underwent tensile tests, metallographic examinations using a light microscope as well as structural examinations involving the use of a scanning electron microscope and an X-ray energy dispersive spectrometer (EDS). The highest strength and quality of welds was obtained when the Al99.5 filler metal was used in a braze welding process. The tests enabled the development of the most convenient braze welding conditions and parameters.

APA, Harvard, Vancouver, ISO, and other styles

20

Hodinář, Lubomír, Jaroslava Svobodová, Iryna Hren, Jaromír Cais, and Štefan Michna. "The Manganese Influence on the AlSi12 Alloy Alfinal Bath Mechanical Properties Change." Manufacturing Technology 19, no. 1 (February 1, 2019): 54–63. http://dx.doi.org/10.21062/ujep/244.2019/a/1213-2489/mt/19/1/54.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Turker, A., and N. Saklakoglu. "Influence of Ag content on microstructure and intermetallic phases of AlSi12 alloy." International Journal of Cast Metals Research 26, no. 3 (June 2013): 129–33. http://dx.doi.org/10.1179/1743133612y.0000000041.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Kimura, Masaaki, Akihiro Hirayama, Junya Yoshioka, Hosei Maekawa, Masahiro Kusaka, Koichi Kaizu, and Tsuyoshi Takahashi. "Mechanical Properties of AlSi12 Alloy Manufactured by Laser Powder Bed Fusion Technique." Journal of Failure Analysis and Prevention 20, no. 6 (September 16, 2020): 1884–95. http://dx.doi.org/10.1007/s11668-020-00998-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Zhang, Wei, Anton Evdokimov, Leander Schleuß, Ralf Ossenbrink, and Vesselin Michailov. "Laser beam build-up welding of AlSi12-powder on AlSi1MgMn-alloy substrate." Progress in Additive Manufacturing 4, no. 2 (October 22, 2018): 117–29. http://dx.doi.org/10.1007/s40964-018-0065-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Yan, Xiangping, Bin Li, Jianru Li, and Lei Yang. "Analysis of the machining characteristics in reaming AlSi12 alloy with PCD reamer." International Journal of Advanced Manufacturing Technology 69, no. 9-12 (August 3, 2013): 2387–99. http://dx.doi.org/10.1007/s00170-013-5219-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Vrana, Radek, Daniel Koutny, David Palousek, and Tomas Zikmund. "IMPACT RESISTANCE OF LATTICE STRUCTURE MADE BY SELECTIVE LASER MELTING FROM AlSi12 ALLOY." MM Science Journal 2015, no. 04 (December 9, 2015): 852–55. http://dx.doi.org/10.17973/mmsj.2015_12_201547.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Pastirčák, R., J. Ščury, M. Brůna, and D. Bolibruchová. "Effect of Technological Parameters on the AlSi12 Alloy Microstructure During Crystallization Under Pressure." Archives of Foundry Engineering 17, no. 2 (June 27, 2017): 75–78. http://dx.doi.org/10.1515/afe-2017-0054.

Full text

Abstract:

Abstract The paper deals with the impact of technological parameters on the heat transfer coefficient and microstructure in AlSi12 alloy using squeeze casting technology. The casting with crystallization under pressure was used, specifically direct squeeze casting method. The goal was to affect crystallization by pressure with a value 100 and 150 MPa. The pressure applied to the melt causes a significant increase of the coefficient of heat transfer between the melt and the mold. There is an increase in heat flow by approximately 50% and the heat transfer coefficient of up to 100-fold, depending on the casting conditions. The change in cooling rate influences the morphology of the silicon particles and intermetallic phases. A change of excluded needles to a rod-shaped geometry with significantly shorter length occurs when used gravity casting method. By using the pressure of 150 MPa during the crystallization process, in the structure can be observed an irregular silica particles, but the size does not exceed 25 microns.

APA, Harvard, Vancouver, ISO, and other styles

27

Ponnusamy, P., S. H. Masood, D. Ruan, S. Palanisamy, and Rizwan Rashid. "High strain rate dynamic behaviour of AlSi12 alloy processed by selective laser melting." International Journal of Advanced Manufacturing Technology 97, no. 1-4 (April 18, 2018): 1023–35. http://dx.doi.org/10.1007/s00170-018-1873-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Kurzawa, A., and J. W. Kaczmar. "Bending Strength of EN AC-44200 – Al2O3 Composites at Elevated Temperatures." Archives of Foundry Engineering 17, no. 1 (March 1, 2017): 103–8. http://dx.doi.org/10.1515/afe-2017-0019.

Full text

Abstract:

Abstract The paper presents results of bend tests at elevated temperatures of aluminium alloy EN AC-44200 (AlSi12) based composite materials reinforced with aluminium oxide particles. The examined materials were manufactured by squeeze casting. Preforms made of Al2O3 particles, with volumetric fraction 10, 20, 30 and 40 vol.% of particles joined with sodium silicate bridges were used as reinforcement. The preforms were characterised by open porosity ensuring proper infiltration with the EN AC-44200 (AlSi12) liquid alloy. The largest bending strength was found for the materials containing 40 vol.% of reinforcing ceramic particles, tested at ambient temperature. At increased test temperature, bending strength Rg of composites decreased in average by 30 to 50 MPa per 100°C of temperature increase. Temperature increase did not significantly affect cracking of the materials. Cracks propagated mainly along the interfaces particle/matrix, with no effect of the particles falling-out from fracture surfaces. Direction of cracking can be affected by a small number of agglomerations of particles or of non-reacted binder. In the composites, the particles strongly restrict plastic deformation of the alloy, which leads to creation of brittle fractures. At elevated temperatures, however mainly at 200 and 300°C, larger numbers of broken, fragmented particles was observed in the vicinity of cracks. Fragmentation of particles occurred mainly at tensioned side of the bended specimens, in the materials with smaller fraction of Al2O3 reinforcement, i.e. 10 and 20 vol.%.

APA, Harvard, Vancouver, ISO, and other styles

29

Lichtenberg, Klaudia, and Kay André Weidenmann. "Mechanical Properties of AlSi12-Based Metal Matrix Composites with Layered Metallic Glass Ribbons." Key Engineering Materials 742 (July 2017): 181–88. http://dx.doi.org/10.4028/www.scientific.net/kem.742.181.

Full text

Abstract:

During the last years, several studies proved the high potential of metallic glasses to be used as reinforcements in lightweight alloys. Thereby, focus was mostly on particle reinforced composites or three-dimensional and omnidirectional glass arrays within the composite. Using a specific layered structure of the entire ribbons as reinforcement to design direction-dependent tailored properties is a novel approach. The composites in this study were produced by gas pressure infiltration of a layered stack of metallic glass ribbons. Ribbons of the metallic glass Ni60Nb20Ta20 were used as reinforcements and aluminum alloy AlSi12 as matrix. Mechanical tests like four point bending and tensile tests as well as elastic analysis using ultrasound phase spectroscopy (UPS) were performed to classify composite’s properties. Further, micro computed tomography (µCT) analysis and metallographic investigations were carried out on the four point bending samples after testing to reveal occurring damage mechanisms.

APA, Harvard, Vancouver, ISO, and other styles

30

Eckmann, Stefan, and Philipp von Hartrott. "Finite Element Modelling of the Temperature Dependent Low Cycle Fatigue Damage Mechanism of an AlSi12 Type Alloy." Materials Science Forum 794-796 (June 2014): 617–21. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.617.

Full text

Abstract:

Aluminium cast alloys are used for engine components, such as pistons and cylinder heads. The micromechanical properties of an AlSi12 cast alloy under monotonic and cyclic loadings are investigated. Therefore a microstructure-based two dimensional finite element model is generated. The characteristic shape of primary precipitates is analyzed and translated into an artificial microstructure. The quality of the generated microstructure is evaluated based on the stress distribution along the primary particle boundaries. The effect of the temperature dependent material behavior of the aluminium matrix is studied with respect to the resulting stress distribution along the particle boundaries. The results are discussed in terms of a possible change of fracture mechanisms from a brittle type fracture at low temperatures to an increasingly ductile fracture at high temperatures.

APA, Harvard, Vancouver, ISO, and other styles

31

Gawdzińska, K., K. Bryll, and D. Nagolska. "Influence of Heat Treatment on Abrasive Wear Resistance of Silumin Matrix Composite Castings." Archives of Metallurgy and Materials 61, no. 1 (March 1, 2016): 177–82. http://dx.doi.org/10.1515/amm-2016-0031.

Full text

Abstract:

The authors attempted at examining the effect of heat treatment on abrasive wear resistance of metal composite castings. Metal matrix composites were made by infiltrating preforms created from unordered short fibers (graphite or silumin) with liquid aluminium alloy AlSi12(b). Thus prepared composites were subject to solution heat treatment at a temperature of 520°C for four hours, then aging at a temperature of 220°C for four hours. Abrasion resistance of the material was tested before and after thermal treatment.

APA, Harvard, Vancouver, ISO, and other styles

32

Baitimerov, Rustam, Pavel Lykov, Dmitry Zherebtsov, Ludmila Radionova, Alexey Shultc, and Konda Prashanth. "Influence of Powder Characteristics on Processability of AlSi12 Alloy Fabricated by Selective Laser Melting." Materials 11, no. 5 (May 7, 2018): 742. http://dx.doi.org/10.3390/ma11050742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Dolata, Anna Janina. "Tribological Properties of AlSi12-Al2O3 Interpenetrating Composite Layers in Comparison with Unreinforced Matrix Alloy." Materials 10, no. 9 (September 6, 2017): 1045. http://dx.doi.org/10.3390/ma10091045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Vora, Pratik, Kamran Mumtaz, Iain Todd, and Neil Hopkinson. "AlSi12 in-situ alloy formation and residual stress reduction using anchorless selective laser melting." Additive Manufacturing 7 (July 2015): 12–19. http://dx.doi.org/10.1016/j.addma.2015.06.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Duarte, Isabel M. A., John Banhart, António J. M. Ferreira, and Mário J. G. Santos. "Foaming around Fastening Elements." Materials Science Forum 514-516 (May 2006): 712–17. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.712.

Full text

Abstract:

The aim of this work was to improve the joining between the fastening elements and the aluminium alloys foams. The research work was carried out on joining fastening elements into aluminium alloy foams during the foaming process, i.e., foaming around fastening elements. The foamable precursor material was produced by hot pressing the powder mixture of metal and a small fraction of the blowing agent. A steel mould containing a foamable precursor material and the fastening elements were heated to temperatures above the melting point of metallic matrix of foamable precursor material in order to obtain the final specimens. Each aluminium foam specimen (6061 and AlSi12) has 200x80x80mm and contains two fastening elements. The steel moulds design, the fastening elements geometry, the aluminium alloy composition, as well as the foaming parameters were studied in order to optimise the quality of the joints produced. The quality of the joints were determined by means of visual inspection and mechanical tests.

APA, Harvard, Vancouver, ISO, and other styles

36

Gherasim, Gabriel, György Thalmaier, Niculina Sechel, Florentina Cziple, Valentin Petrescu, and Ioan Vida-Simiti. "Open Cell Al-Si Foams by a Sintering and Dissolution Process." Solid State Phenomena 216 (August 2014): 249–54. http://dx.doi.org/10.4028/www.scientific.net/ssp.216.249.

Full text

Abstract:

Open cell foams from AlSi12 alloy were successfully fabricated by the Sintering and Dissolution Process, using NaCl as space holder (60 %). The size of the aluminum alloy powder is less than 45 μm, while the space holder powder size is 315-500 μm, 630-800 μm and 800-1250 μm respectively. The appropriate quantities of alloy powder and salt were mixed and cold pressed at 250 MPa. The sintering process was done at 500 °C and 545 °C, in vacuum (10-5 torr) for 10, 20 and 30 minutes respectively. The space holder was eliminated by holding the sintered samples in running hot water (70 °C). After the salt was dissolved, the samples were dried and the mass loss was analyzed. Keywords: Aluminum foam, Powder metallurgy, Sintering and dissolution process

APA, Harvard, Vancouver, ISO, and other styles

37

Szlancsik, Attila, Bálint Katona, Dóra Károly, and Imre Orbulov. "Notch (In)Sensitivity of Aluminum Matrix Syntactic Foams." Materials 12, no. 4 (February 14, 2019): 574. http://dx.doi.org/10.3390/ma12040574.

Full text

Abstract:

Aluminum alloy (Al99.5 or AlSi12)-based metal matrix syntactic foams (MMSFs) were produced by pressure infiltration with ~65 vol % Globocer filler (33 wt % Al2O3, 48 wt % SiO2, 19 wt % Al2O3∙SiO2). The infiltrated blocks were machined by different geometry tools in order to produce notched samples. The samples were loaded in three-point bending, and the loading force values were recorded against the cross-head displacements and the crack opening displacements. To measure up the notch sensitivity and toughness of the MMSFs, the fracture energies and the fracture toughness values were determined. The results showed that the mentioned quantities are needed to describe the behavior of MMSFs. The fracture energies were shown to be notch-sensitive, while the fracture toughness values were dependent only on the matrix material and were insensitive to the notch geometry. The complex investigation of the fracture surfaces revealed strong bonding between the hollow spheres and the Al99.5 matrix due to a chemical reaction, while this bonding was found to be weaker in the case of the AlSi12 matrix. This difference resulted in completely different crack propagation modes in the case of the different matrices.

APA, Harvard, Vancouver, ISO, and other styles

38

Mitelea, Ion, Corneliu Marius Crăciunescu, Ciprian Pavel Lucian, and Ion Dragoş Uţu. "Microstructure and mechanical properties of 6082-T6 aluminum alloy–zinc coated steel braze-welded joints." Materials Testing 63, no. 8 (August 1, 2021): 721–27. http://dx.doi.org/10.1515/mt-2020-0117.

Full text

Abstract:

Abstract The laser braze-welding technique was aimed to join a low alloyed zinc coated steel used in automotive industry, with a deformable, aging hardenable aluminum alloy from the 6xxx series using as filler material a AlSi12 wire. The heterogeneous joint was obtained by welding of aluminum alloy with the filler wire and by brazing of molten aluminum alloy together with the filler wire on the surface of a zinc coated steel which remained in solid state. The results showed that by using a proper heat input, the zinc coated steel was brazed without a melting process by the aluminum alloy which was in liquid state. On the interface between the zinc coated steel and the welded seam, a thin layer (the thickness was 6 to 8 μm) formed consisting of star (Al-Fe-Si) or needle shape (Mg-Al-Fe-Mn) intermetallic phases.

APA, Harvard, Vancouver, ISO, and other styles

39

Chirita, G., I. Stefanescu, D. F. Soares, and F. S. Silva. "On the ability of producing FGMs with an AlSi12 aluminium alloy by using centrifugal casting." International Journal of Materials and Product Technology 39, no. 1/2 (2010): 30. http://dx.doi.org/10.1504/ijmpt.2010.034258.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Siddique, Shafaqat, Muhammad Imran, and Frank Walther. "Very high cycle fatigue and fatigue crack propagation behavior of selective laser melted AlSi12 alloy." International Journal of Fatigue 94 (January 2017): 246–54. http://dx.doi.org/10.1016/j.ijfatigue.2016.06.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Rashid, R., S. H. Masood, D. Ruan, S. Palanisamy, R. A. Rahman Rashid, J. Elambasseril, and M. Brandt. "Effect of energy per layer on the anisotropy of selective laser melted AlSi12 aluminium alloy." Additive Manufacturing 22 (August 2018): 426–39. http://dx.doi.org/10.1016/j.addma.2018.05.040.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Battaglia, E., F. Bonollo, P. Ferro, and A. Fabrizi. "Effect of Heat Treatment on Commercial AlSi12Cu1(Fe) and AlSi12(b) Aluminum Alloy Die Castings." Metallurgical and Materials Transactions A 49, no. 5 (March 12, 2018): 1631–40. http://dx.doi.org/10.1007/s11661-018-4544-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Asghar, Z., G. Requena, and F. Kubel. "The role of Ni and Fe aluminides on the elevated temperature strength of an AlSi12 alloy." Materials Science and Engineering: A 527, no. 21-22 (August 2010): 5691–98. http://dx.doi.org/10.1016/j.msea.2010.05.033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Ponnusamy, P., S. H. Masood, D. Ruan, S. Palanisamy, R. A. Rahman Rashid, Reiza Mukhlis, and Nathan J. Edwards. "Dynamic compressive behaviour of selective laser melted AlSi12 alloy: Effect of elevated temperature and heat treatment." Additive Manufacturing 36 (December 2020): 101614. http://dx.doi.org/10.1016/j.addma.2020.101614.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Komarov, Aleksander I., Lesław Kyzioł, Dmitry V. Orda, Donata O. Iskandarova, Igor A. Sosnovskiy, Artem A. Kurilyonok, and Daria Żuk. "Creation of AlSi12 Alloy Coating by Centrifugal Induction Surfacing with the Addition of Low-Melting Metals." Materials 14, no. 13 (June 25, 2021): 3555. http://dx.doi.org/10.3390/ma14133555.

Full text

Abstract:

This paper investigates the structure and mechanical characteristics of a coating based on an AlSi12 alloy, obtained by centrifugal induction surfacing as an alternative to a bronze sliding bearing. To provide for the adhesion of an aluminum layer to the inner surface of a steel bearing housing, a sublayer of low-melting metals was formed, while the formation of the main layer and the sublayer was done in a single processing cycle. The low-melting metals had higher density, which ensured that the sublayer was created at the interface with the steel bearing housing under the action of centrifugal forces. It is shown that the low-melting sublayer forms a strong bond both with the aluminum alloy and with the steel base. Lead and tin are used as low-melting additives. It has been established that lead or tin used in a sublayer are indirectly involved in the structural formation of boundary layers of steel and aluminum claddings, acting as a medium for diffuse mass transfer. Thus, lead is not included in the composition of the main coating and does not change the chemical composition of the aluminum layer. After the addition of tin, the aluminum develops a dendritic structure, with tin captured in the interdendritic space. In this case, the deposited layer is saturated with iron with the formation of intermetallic (Fe, Al, Si) compounds, both at the interface and in the coating volume. This paper offers an explanation of the mechanism through which Pb and Sn act on the structure formation of the coating, and on the boundary layer of the steel bearing housing. Tribological tests have shown that the resulting materials are a promising option for plain bearings and highly competitive with the CuSn10P bronze.

APA, Harvard, Vancouver, ISO, and other styles

46

Posmyk, A., M. Cholewa, J. Wieczorek, and D. Scelina. "Influence of Electrolytical Oxidising of Silumine Surfaces on the Quality of Bonding with Epoxy Resin." Archives of Metallurgy and Materials 61, no. 3 (September 1, 2016): 1601–6. http://dx.doi.org/10.1515/amm-2016-0261.

Full text

Abstract:

Abstract The article presents the preparation process of AC-AlSi12 aluminum alloy surface by application of anodic oxidation method. The method enables the formation of a porous oxide layer (Al2O3) which generates the substrate of durable adhesive bond with an epoxy resin. It also presents the influence of the form of silicon precipitates in the modified alloy upon anodizing process, uniform structure and thickness of the oxide layer as well as the topography of its surface which is expected to improve adhesion of the resin and silumin. The paper describes how the position of oxidized surface against the negative electrode influences the coating structure. The studied silumins are intended to form the material for casting of 3 dimensional objects whose parts will change the distribution of electric field strength that may cause non-uniform structure of the coating.

APA, Harvard, Vancouver, ISO, and other styles

47

Tenkamp, Jochen, Mustafa Awd, Shafaqat Siddique, Peter Starke, and Frank Walther. "Fracture–Mechanical Assessment of the Effect of Defects on the Fatigue Lifetime and Limit in Cast and Additively Manufactured Aluminum–Silicon Alloys from HCF to VHCF Regime." Metals 10, no. 7 (July 14, 2020): 943. http://dx.doi.org/10.3390/met10070943.

Full text

Abstract:

Aluminum–silicon alloys are commonly used in die-cast and additively manufactured (AM) light-weight components due to their good processability and high strength-to-weight ratio. As both processing routes lead to the formation of defects such as gas and shrinkage porosity, a defect-sensitive design of components is necessary for safe application. This study deals with the fatigue and crack propagation behavior of die-cast alloy AlSi7Mg0.3 and additively manufactured alloy AlSi12 and its relation to process-induced defects. The different porosities result in significant changes in the fatigue stress-lifetime (S–N) curves. Therefore, the local stress intensity factors of crack-initiating defects were determined in the high and very high cycle fatigue regime according to the fracture mechanics approach of Murakami. Through correlation with fatigue lifetime, the relationship of stress intensity factor (SIF) and fatigue lifetime (N) could be described by one power law (SIF–N curve) for all porosities. The relationship between fatigue limit and defect size was further investigated by Kitagawa–Takahashi (KT) diagrams. By using El Haddad’s intrinsic crack length, reliable differentiation between fracture and run out of the cast and AM aluminum alloys could be realized. SIF–N curves and KT diagrams enable a reliable fatigue design of cast and AM aluminum alloys for a finite and infinite lifetime.

APA, Harvard, Vancouver, ISO, and other styles

48

Siddique, Shafaqat, Mustafa Awd, Jochen Tenkamp, and Frank Walther. "Development of a stochastic approach for fatigue life prediction of AlSi12 alloy processed by selective laser melting." Engineering Failure Analysis 79 (September 2017): 34–50. http://dx.doi.org/10.1016/j.engfailanal.2017.03.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Asghar, Z., G. Requena, H. P. Degischer, and P. Cloetens. "Three-dimensional study of Ni aluminides in an AlSi12 alloy by means of light optical and synchrotron microtomography." Acta Materialia 57, no. 14 (August 2009): 4125–32. http://dx.doi.org/10.1016/j.actamat.2009.05.010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Nová, Iva, Karel Fraňa, Pavel Solfronk, Jiří Sobotka, David Koreček, and Martin Švec. "Characteristics of Porous Aluminium Materials Produced by Pressing Sodium Chloride into Their Melts." Materials 14, no. 17 (August 25, 2021): 4809. http://dx.doi.org/10.3390/ma14174809.

Full text

Abstract:

The paper deals with research related to the production of metal cellular aluminium systems, in which production is based on the application of sodium chloride particles. In this paper, the properties of porous aluminium materials that were produced by an unconventional method—by pressing salt particles into the melt of aluminium alloy—are described. The new methodology was developed and verified for the production of these materials. The main feature of this methodology is a hydraulic forming press and a simple-shaped foundry mould. For these purposes, four different groups of sodium chloride particle sizes (1 to 3, 3 to 5, 5 to 7 and 8 to 10 mm) were applied. The preferred aluminium foundry alloy (AlSi12) was used to produce the porous aluminium samples. Based upon this developed methodology, samples of porous aluminium materials were produced and analysed. Their weight and volume were monitored, their density and relative density were calculated, and their porosity was determined. In addition, the porosity of samples and continuity of their air cells were monitored as well. An industrial computed tomograph and a scanning electron microscope were applied for these purposes.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!