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Journal articles on the topic 'Aluminium Alloys - Semisolid Die Casting'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Motegi, Tetsuichi, Fumi Tanabe, and Eiji Sugiura. "Continuous Casting of Semisolid Aluminium Alloys." Materials Science Forum 396-402 (July 2002): 203–8. http://dx.doi.org/10.4028/www.scientific.net/msf.396-402.203.

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2

Jarfors, Anders E. W. "A Comparison Between Semisolid Casting Methods for Aluminium Alloys." Metals 10, no. 10 (2020): 1368. http://dx.doi.org/10.3390/met10101368.

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Semisolid casting of aluminium alloys is growing. For magnesium alloys, Thixomoulding became the dominant process around the world. For aluminium processing, the situation is different as semisolid processing of aluminium is more technically challenging than for magnesium. Today three processes are leading the process implementation, The Gas-Induced Superheated-Slurry (GISS) method, the RheoMetal process and the Swirling Enthalpy Equilibration Device (SEED) process. These processes have all strengths and weaknesses and will fit a particular range of applications. The current paper aims at look

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3

D’Errico, Fabrizio, Daniele Casari, Mattia Alemani, Guido Perricone, and Mauro Tosto. "INDUSTRIAL SEMISOLID CASTING PROCESS FOR SECONDARY ALUMINIUM ALLOYS FOR DECARBONISING LIGHTWEIGHT PARTS IN AUTOMOTIVE SECTOR." MATEC Web of Conferences 326 (2020): 06007. http://dx.doi.org/10.1051/matecconf/202032606007.

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The life cycle holistic approach for the automotive sector highlighted how much important is working on decarbonisation of Al casting processes to produce vehicle components. Broadening the use of recycled aluminium alloys, instead of high energy intensive primary aluminium alloys, is key for environment preservation. While primary aluminium alloys are preferred by automotive original equipment manufacturers (OEMs) because impurities (mainly Fe) present in secondary aluminium alloys might cause fatigue properties decay, a new semisolid state process route has been developed at Brembo to drasti

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4

Qi, Ming Fan, Yong Lin Kang, Yuan Hao Zheng, Ji Cheng Wang, Gu Nan Li, and Ying Zhang. "Industrialization of Aluminum Alloy Uniform Solidification Controlled Rheological Die Casting." Solid State Phenomena 327 (January 10, 2022): 163–71. http://dx.doi.org/10.4028/www.scientific.net/ssp.327.163.

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An efficient and low-cost aluminum alloy uniform solidification control technology, namely, air-cooled stirring rod (ACSR) process, has been developed for preparing large volume semisolid slurry. The semisolid slurry preparation process is connected with the die-casting machine to form multiple integrated intelligent rheological die-casting production lines for the efficient preparation of rheological die-casting of large-scale thin-walled aluminum alloys. At present, the ACSR process can produce 40 kg of large-volume semisolid slurry with a solid phase ratio of 25% to 35% within 30 s. This rh

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5

Proni, Cecilia Tereza Weishaupt, Leandro Cássio de Paula, Luis Vanderlei Torres, and Eugênio José Zoqui. "Evaluation of Al-5wt%Si-5wt%Zn as Raw Material for Semisolid Forming." Solid State Phenomena 285 (January 2019): 339–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.339.

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Designing new alloys for semisolid processing is key to the success of semisolid materials technology. While aluminium-silicon and aluminium-zinc alloys have been tested as potential raw materials, ternary aluminium alloys containing silicon and zinc have yet to be tested. As such alloys may exhibit the rheological behaviour required for semisolid forming and the excellent final mechanical properties of Al-Zn alloys, we investigated the thermodynamic aspects of the solid-liquid transition of Al-5.5wt%Si-5wt%Zn alloy, the morphological stability of this alloy in the semisolid temperature range

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6

Möller, Heinrich, Gonasagren Govender, Pierre Rossouw, and Waldo Stumpf. "The Influence of Prior Natural Aging on the Subsequent Artificial Aging Response of Aluminium Alloy A356 with Respective Globular and Dendritic Microstructures." Advances in Materials Science and Engineering 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/375150.

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Alloy A356 is one of the most popular alloys used for semisolid metal forming. The heat treatment cycles that are currently applied to semisolid processed components are mostly those that are in use for dendritic casting alloys. The assumption has been made that these heat treatments are not necessarily the optimum treatments, as the difference in solidification history and microstructure of SSM processed components should be considered. The objective of this study is to determine whether dendritic A356 behaves in a similar way to globular A356 in terms of its response to artificial aging with

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7

Azpilgain, Zigor, Inaki Hurtado, R. Ortubay, I. Landa, and J. Atxa. "Semisolid Forging of 7000 Series Aluminum Alloys." Solid State Phenomena 116-117 (October 2006): 758–61. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.758.

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The achievement of lighter automotive components is an important driving force in the development and optimization of casting techniques. In this sense, semisolid forming is an emerging technology that has allowed the production of security components using aluminum alloys. The foundry alloys A356 and A357 remain, up to the present, the most used alloys for the semisolid processing of components. Nevertheless, several authors have pointed out the gain in properties that other alloy families could provide. In the present work, thixoformability of 7000 series aluminum alloys is studied. Thermody

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8

Fracchia, Elisa, Ivano Gattelli, and Marco Actis Grande. "Characterisation of Residual Stresses of Rheocast Al Alloy." Solid State Phenomena 347 (August 24, 2023): 31–37. http://dx.doi.org/10.4028/p-cq6pqs.

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Rheocasting is a semisolid casting process allowing to obtain near-net shape parts. Through the Rheocasting process, it is possible to achieve aluminium castings having a low grade of porosity if compared to traditional die-casting methods, encouraging the production of automotive frame parts. However, casting processes, as commonly known, may cause tensile residual stresses inside the parts. On the other hand, compressive stresses inside castings can significantly increase the life of components: residual compressive stresses increase the material's resistance by counteracting crack initiatio

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9

Kapranos, Plato, Ryoji Nakamura, Ermanno Bertoli, Annalisa Pola, Zigor Azpilgain, and Inaki Hurtado. "Thixo-Extrusion of 5182 Aluminium Alloy." Solid State Phenomena 141-143 (July 2008): 115–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.115.

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Extrusion is a well established technology for the production of complex sections of aluminium alloys. Thixo-extrusion in comparison to traditional hot-extrusion offers several advantages such as lower extrusion and friction forces, higher material fluidity, longer tool life etc. Aluminium alloy 5182 is an important commercial alloy characterized by high strength and ductility, high corrosion resistance and good formability; it is commonly used for the production of wrought automotive components and it is also suitable for semi-solid applications thanks to its wide solidification range. The ai

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10

Santos, Jorge, Anders E. W. Jarfors, and Arne K. Dahle. "Filling, Feeding and Defect Formation of Thick-Walled AlSi7Mg0.3 Semi-Solid Castings." Solid State Phenomena 256 (September 2016): 222–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.222.

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Aluminium semi-solid castings have gained increased attention due to their superior mechanical properties, lower porosity compared to conventional high pressure die cast material. These characteristics suggests that semi-solid casting should be suitable to produce thick-walled structural components, yet most successful applications of semisolid casting have been for thin-walled components. There is a lack of understanding on filling and feeding related defect formation for semi-solid castings with thick-walled cross-sections. In the current study an AlSi7Mg0.3 aluminium alloy was used to produ

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11

Bünck, Matthias, Fabian Küthe, Andreas Bührig-Polaczek, Alexander Arnold, Bernd Friedrich, and Roger Sauermann. "Semi-Solid Casting of High-Reactive Wrought Alloys by Means of the Alloy AlLi2.1Mg5.5ScZr (AA1420*)." Solid State Phenomena 141-143 (July 2008): 145–50. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.145.

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Semi-solid forming offers new potentials for processing of high reactive and hot crack susceptible aluminium-lithium wrought alloys. With the tailored alloy AA1420* (AlLi2.1Mg5.5 +Sc+Zr) a promising material for thixoforming with achievable high strength of up to 500MPa tensile strength and over 400MPa yield strength concomitant with its low density of 2,46g/cm3 is achievable. Due to high solid fractions the effect of solidification shrinkage could be sufficiently decreased with the result of hot-tear-free casting. Simulation supported a critical to cast automotive tie rod was exemplarily manu

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12

Saklakoğlu, Nurşen, Yücel Birol, and Şefika Kasman. "Microstructural Evolution of ETIAL 160 Aluminium Alloy Feedstock Produced by Cooling Slope Casting." Solid State Phenomena 141-143 (July 2008): 575–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.575.

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Owing to its superior flow and mould-filling capability, a fully globular structure is essential for semisolid processing technologies. The present work was undertaken to identify the cooling slope casting process parameters that, upon heating to the semisolid state, gives the required globular structure for the ETIAL 160 alloy. Of the two pouring temperatures investigated, 605 °C and 615 °C, the lower pouring temperature was found to provide more globular grains surrounded by liquid phases.

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13

Pola, Annalisa, Alberto Arrighini, and Roberto Roberti. "Effect of Ultrasounds Treatment on Alloys for Semisolid Application." Solid State Phenomena 141-143 (July 2008): 481–86. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.481.

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Semisolid metallic alloys are commercially produced by means of mechanical or electromagnetic stirring. Among the mechanical devices, the rotating pin immersed in a solidifying alloy seems to be easier to manage in industrial practice although it can induce some porosity, depending on the shape of the pin. As known, ultrasounds are mechanical waves which, when applied to liquid metals, increase the number of solidification nuclei, so that the cast products show superior mechanical performances, as a consequence of the finer grain structure. In this paper the use of ultrasound waves applied to

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14

Côté, Pascal, Bryksi Vlastimil, and Barbora Bryksí Stunová. "Case Study: Engine Bracket Made by Rheocasting Using the SEED Process." Solid State Phenomena 285 (January 2019): 441–45. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.441.

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In the context of increasing needs for lightweighting vehicles, semisolid casting of aluminium components is a proven route that can be efficiently applied for automotive parts. Although semisolid forming has not yet reached the market penetration that suits its actual potential, it is currently and efficiently used in many applications around the world on a daily basis. An example of such will be shown. This paper presents a case study on the application of the SEED rheocasting technology for the casting of an engine bracket. The part is made of the widely used AlSi7Mg0.3 alloy and is heat tr

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15

Kaskani, Mehdi, and Behzad Niroumand. "On Non-Dendritic Microstructure Formation during Sand Casting of A356 Alloy." Solid State Phenomena 192-193 (October 2012): 433–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.433.

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The purpose of this study was to develop a new method for formation of non-dendritic microstructure during sand casting of aluminum alloys without any previous special processing. For this purpose, sand molds with three different types of running systems were designed. The first design included a traditional reverse tapered vertical sprue. The second design was similar to the first one except for a conical sand core placed inside the lower half portion of the sprue creating a narrow gap for the flow of the melt into the mold. In the third design, the core was fitted with metal chills. Molten A

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16

Niklas, Fabian. "New Addressable Applications for Rheocasting to Escape from an Oversupplied Market." Solid State Phenomena 348 (August 28, 2023): 61–67. http://dx.doi.org/10.4028/p-k3dfyn.

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The current market change of aluminium HPDC castings started with the “Dieselgate”. First, there was a shift from diesel to petrol engines. In the second step, hybrid and battery-powered cars gained significant market shares in sales statistics. Therefore, lucrative powertrain components are falling away. As powertrain foundries still want to utilize their machines to capacity, they are pushing into the structural castings market. As a result, there is an oversupply of casting machines here, which massively depresses prices and, thus, margins for tenders. With rising energy costs, these declin

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17

Yang, M. B., H. J. Hu, B. Dai, and L. W. Tang. "Compression behaviour of semisolid YL112 die casting aluminium alloy following isothermal heat treatment." International Journal of Cast Metals Research 20, no. 4 (2007): 198–201. http://dx.doi.org/10.1179/136404607x249770.

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18

Torres, Luis Vanderlei, Cecilia Tereza Weishaupt Proni, and Eugênio José Zoqui. "Rheological Behavior in the Semisolid State of Al-Si-Cu Alloys Produced by ECAP." Solid State Phenomena 347 (August 24, 2023): 135–40. http://dx.doi.org/10.4028/p-zz3xy6.

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It is fundamental in thixoforming to have a refined microstructure that, when heated to the semisolid state, consists of a mixture of small spheres immersed in liquid as this ensures the best rheological properties. The present work therefore aims to analyze the rheological behaviour of aluminum-silicon-copper alloys, namely, Al5Si2.8Cu, Al6Si2.8Cu and Al7Si2.8Cu. The alloys were produced by conventional casting and then deformed by ECAP in one pass in a die containing two channels of the same cross-sectional area forming an angle of 120°. After being processed by ECAP, the alloys were heated

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19

Haga, Toshio, Kazuki Yamazaki, and Shinichi Nishida. "High Speed Roll Casting of Al-5%Mg Strip at Semisolid Condition." Solid State Phenomena 348 (August 28, 2023): 7–14. http://dx.doi.org/10.4028/p-uch19d.

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Semisolid Al–Mg alloy strips were cast using high-speed twin-roll casting under very low roll loads to investigate the effect of low roll loads on surface cracking and center segregation of Mg. In the conventional twin-roll caster for aluminum alloys, the roll speed is usually less than 2 m/min, and the roll load is typically greater than 1 kN/mm to solidify the aluminum alloy and reduce casting defects. In the vertical type high-speed twin-roll caster, the roll speed can range from 10 to 90 m/min, and strips can be cast at roll loads below 500 N/mm, down to loads as low as 2 N/mm. Strips cast

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20

Ragab, Khaled A., Mohamed Bouazara, Amine Bouaicha, and Hatem Mrad. "Materials Performance and Design Analysis of Suspension Lower-Arm Fabricated from Al-Si-Mg Castings." Key Engineering Materials 710 (September 2016): 315–20. http://dx.doi.org/10.4028/www.scientific.net/kem.710.315.

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The diversity of physical and mechanical properties of aluminum alloys leads to develop a variety of manufacturing processes including the semi-solid casting process. Fatigue failure is considered the most common problem occurred in automotive engineering applications by which the vehicle components, mainly suspension system parts, fail under conditions of dynamic loading. It is well known that the fatigue life of aluminum castings, mainly A357, is very sensitive to casting design as well as to casting defects and microstructure constituents. The fatigue characteristics of automotive lower sus

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21

Pola, Annalisa, Lorenzo Montesano, Marcello Gelfi, Roberto Roberti, and Giovina Marina La Vecchia. "Aluminum Segregation in ZA27 Rheocast Alloy." Solid State Phenomena 217-218 (September 2014): 75–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.217-218.75.

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Aluminum segregation in zinc alloys is a well-known problem during melting and casting. In molten Zn alloys, in fact, Al tends to float on the surface of the bath because of its lower density than zinc. The same problem also occurs during casting solidification, causing chemical gradients along part thickness and soundness problems. As a consequence, the use of high aluminum content zinc alloys, such as ZA27, can be limited.In this paper the effectiveness of rheocasting method on decreasing Al-segregation phenomenon in ZA27 was investigated. The slurry was obtained by using the ultrasound tech

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22

TANABE, Fumi, and Tetsuichi MOTEGI. "Characteristics of Thixoforming in Semisolid Continuous Casting Billet of Aluminum Alloys." Proceedings of the Materials and processing conference 2003.11 (2003): 291–92. http://dx.doi.org/10.1299/jsmemp.2003.11.291.

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23

Wang, Xiang, Tong Zhao, Di Tie, and Ren Guo Guan. "A Novel Process for Grain Refining and Semisolid Processing." Materials Science Forum 783-786 (May 2014): 148–54. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.148.

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A novel process for grain refining and manufacture of high quality semisolid slurries ofalloys was developed. The process was proven to refine metal grain remarkably, and the grain sizeof pure aluminum can be refined to the first grade of Chinese refining standard of pure aluminumGB/T 7946.4-1999 ref) . P rimary silicon and eutectic silicon in the hypereutectic Al-Si alloy can bealso effectively refined. This process was used to prepare the billets with small spherical grains orequiaxed grains of Al-6Si-2Mg, AZ91, AZ31 and hypereutectic Al-Si alloys successfully. The p ip es ,profi le s and wi

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24

Pola, Annalisa, Roberto Roberti, Ermanno Bertoli, and Disman Furloni. "Design and Production of New Aluminum Thixotropic Alloys for the Manufacture of Structural Components by Semisolid Die Casting." Solid State Phenomena 116-117 (October 2006): 58–63. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.58.

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Semi-solid processing is nowadays a powerful technology for the realization of structural components; in addition to the increase in their mechanical properties, due to the globular structure instead of the dendritic one, further developments are most likely to be expected from alloy chemical composition adjustments in order to achieve higher performances compared with the industrially used A356 and A357. Aim of this research is to try to set up new aluminium alloys for semisolid foundry applications, starting from the standard Al-Si system, at the base of all known casting processes. Differen

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25

Mao, Wei Min, Yue Long Bai, Song Fu Gao, and Guo Xing Tang. "Research on the Composite Slurry Preparation and Rheocasting of Aluminum Alloy." Solid State Phenomena 116-117 (October 2006): 410–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.410.

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The study on new rheoforming technologies of semisolid alloys has recently been one main subject interesting many professors, experts and industrials, and so many new methods about preparing semisolid alloy slurry and rheoforming process have been put forward. The semisolid slurry of AlSi7Mg alloy was prepared by being poured at a low superheat and stirred by an electromagnetic field at a low power for a short time, and then the slurry was further soaked for proper time and finally rheoformed into a key-shaped die cavity in this paper. The influence of slurry temperature, injection specific pr

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26

PIAO, LongYun, and Tetsuichi MOTEGI. "Solidified structure of a 5052 aluminum alloy obtained by semisolid casting." Journal of Japan Institute of Light Metals 55, no. 2 (2005): 86–90. http://dx.doi.org/10.2464/jilm.55.86.

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27

MOTEGI, Tetsuichi. "Semisolid Casting of Some Aluminum Alloys Using Inclined Cooling Plate and Their Thixoforming." Journal of the Japan Society for Technology of Plasticity 48, no. 560 (2007): 807–11. http://dx.doi.org/10.9773/sosei.48.807.

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28

Hu, Zhaohua, Qile Huo, Yaxin Chen, Manping Liu, and Xuefei Chen. "Improving Mechanical Property of Hyper-Eutectic Al-Si Alloys via Regulating the Microstructure by Rheo-Die-Casting." Metals 13, no. 5 (2023): 968. http://dx.doi.org/10.3390/met13050968.

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The microstructure plays a key role in the mechanical properties of hyper-eutectic Al-Si alloys. In this study, we investigate the microstructural evolution of rheo-die-casting (RDC) on the Al-15Si-4Cu-0.5Mg alloy using a mechanical rotational barrel system. Our findings demonstrate that higher rotational speed and pouring temperature reduce the size and roundness of primary Si particles in the semisolid slurry. Additionally, during RDC, the dendritic aluminum matrix and skeletal iron-containing inter metallics are sheared off, leading to a more uniform and dispersed Al2Cu phase. Ultimately, o

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29

Mahathaninwong, Narissara, Sirikul Wisutmethangoon, Thawatchai Plookphol, and Jessada Wannasin. "Influence of Solution Heat Treatment on Microstructures of Semisolid Cast 7075 Aluminium Alloy." Advanced Materials Research 339 (September 2011): 371–74. http://dx.doi.org/10.4028/www.scientific.net/amr.339.371.

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Influence of temperature and time of solution heat treatment on the microstructures of rheo-casting 7075 aluminium alloy produced by a novel technique, the Gas Induced Semi Solid (GISS) technique, had been investigated in this study. The microstructure of the as-cast specimens mainly consisted of matrix-α (Al) and grain boundary (GB)-eutectic phase (α-Al + Mg(Zn,Cu,Al)2). After solution heat treatment at 480 °C for 1 h, MgZn2 phase at the grain boundary was observed to have dissolved and coarse black particles of Mg2Si were observed to form in the matrix. In comparison, when solutionizing temp

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30

Qi, Ming Fan, Yong Lin Kang, and Quan Quan Qiu. "Industrialized Application of Rheo-HPDC Process for the Production of Large Thin-Walled Aluminum Alloy Parts." Solid State Phenomena 285 (January 2019): 453–58. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.453.

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A simplified and efficient process, namely air-cooled stirring rod (ACSR), was proposed to prepare semisolid slurry of aluminum alloys. An advanced integrated rheological high pressure die-casting (Rheo-HPDC) technology was established by combining the ACSR equipment with HPDC machines to produce high quality aluminum alloy products. Microstructures, surface qualities, mechanical properties, corrosion resistances and thermal conductivities of the Al-8Si alloy parts prepared by Rheo-HPDC were investigated and compared to those prepared by traditional HPDC. The results indicated that the Rheo-HP

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31

TANABE, Fumi, Tetsuichi MOTEGI, and Eiji SUGIURA. "Semisolid continuous casting of 6070 and 7075 aluminum alloys using an inclined cooling plate." Journal of Japan Institute of Light Metals 53, no. 7 (2003): 290–94. http://dx.doi.org/10.2464/jilm.53.290.

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32

TANABE, Fumi, Tetsuichi MOTEGI, and Eiji SUGIURA. "Characteristics of thixoforming in semisolid continuous casting billets of 6070 and 7075 aluminum alloys." Journal of Japan Institute of Light Metals 53, no. 8 (2003): 327–30. http://dx.doi.org/10.2464/jilm.53.327.

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33

Kang, Yong Lin, Liu Qing Yang, Ren Bo Song, Fan Zhang, and Tao Tao. "Study on Microstructure-Processing Relationship of a Semisolid Rheocasting A357 Aluminum Alloy." Solid State Phenomena 141-143 (July 2008): 157–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.157.

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An improved and self-developed semisolid preparing and rheomoulding device — rotating barrel rheomoulding machine (RBRM) for light alloys in laboratory is introduced in this paper. It mainly consists of a melting furnace, a shearing system with two relative-rotating conical barrels, a central temperature control unit, gas protection system and a die-casting system. Microstructure-processing relationship of A357 aluminum alloy obtained by the RBRM process is investigated by different intensity of turbulence and different shear rate. The experimental results show that the improved RBRM is capabl

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34

Ouriev, Boris. "Rheology and Rheometry of Aluminum Alloys: Influence of Shear and Vibration on Aluminum Flow Properties." Solid State Phenomena 116-117 (October 2006): 558–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.558.

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Understanding of flow properties and flow effects of liquid and semisolid aluminum became a key solution for know-how of casting process. Therefore such properties must be characterized a priory to layout of flow process parameters in order to predict structure formation of aluminum in flow. In order to reach target of material characterization it becomes essential to analyze materials under as close to real process conditions as possible. This task was solved by strong modification of commercial rotational rheometer and application of high-resolution temperature control. Besides understanding

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35

Jarfors, Anders E. W., Diego Rigovacca, Mostafa Payandeh, Magnus Wessen, Salem Seifeddine, and Per Jansson. "Influence of Process Parameters on Surface Appearance and Roughness of a Low Si Containing Al-Alloy, in Semisolid Casting." Solid State Phenomena 217-218 (September 2014): 318–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.217-218.318.

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The visual appearance and surface roughness were experimentally investigated in industrial scale for a low silicon containing aluminium alloy cast in semisolid state integrated with HPDC machine. A visual comparative technique and surface roughness in the form of the Rq value were used to evaluate the surface appearance and the surface roughness respectively. The results were investigated statistically to find significant models. It was shown that high quality appearance, following a comparative scale, was possible using high die temperature and high injection speed. It was also found that imp

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36

A. Razak, N., A. H. Ahmad, and M. R. Maarof. "Thermal Profile and Microstructure of Wrought Aluminium 7075 for Semisolid Metal Processing." International Journal of Automotive and Mechanical Engineering 17, no. 2 (2020): 7842–50. http://dx.doi.org/10.15282/ijame.17.2.2020.03.0584.

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Thermal analysis (TA) is a non-damaging and quick method to check the molten metal’s condition preceding to casting. This paper aims to present the relationship between fraction solid and temperature by utilising cooling curve analysis (CCA), to acquire correct processing parameters for wrought aluminium 7075 in semisolid condition. An induction furnace was used to heat a graphite crucible containing wrought aluminium 7075 alloy up to the temperature of 750 °C. A calibrated Chromel-Alumel K-type thermocouple was placed at the centre of the crucible and was submerged to 15 mm in the melt. The s

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37

de Paula, Leandro Cássio, Shun Tokita, Kota Kadoi, Hiroshige Inoue, and Eugênio José Zoqui. "Analysis of the 355 Aluminium Alloy Microstructure for Application in Thixoforming." Solid State Phenomena 285 (January 2019): 277–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.277.

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The 355 aluminium alloy is known to have excellent thermodynamic characteristics that render it suitable as a raw material for rheocasting and thixoforming. However, besides the controllable transition from solid to liquid phase, the refined microstructure required in the semisolid range is one of the key factors with a strong influence on the rheology of the material. This paper intends to analyse the in situ behaviour of the microstructure, in terms of morphological change, using high-temperature laser scanning confocal microscopy. The 355 alloy was prepared via conventional casting, and ref

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Srivastava, Ashish Kumar, and Rohit Srivastava. "To Investigate Mechanical Properties of Al-based Composite Reinforced with Waste Product." Journal of Futuristic Sciences and Applications 5, no. 2 (2022): 81–89. http://dx.doi.org/10.51976/jfsa.522211.

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The most common use for aluminium metal matrix composite, or AMMC, is variety of industrial submissions, including those in aerospace, automotive, marine, and sports industries, amongst many others. The most important reinforcing components for manufacturing AMMC are SiC, aluminium oxides, MnO, graphene, and carbon nano tubes, since these components are often used in practice. This article’s goal is to build AMMCs that are reinforced with Silicon carbide (SiC) and Alumina (Al2O3). In order to make AMMC, a procedure known as stir casting is used. Since the last several years, increased attentio

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Eslami, Maryam, Flavio Deflorian, and Caterina Zanella. "Electrochemical Behavior of Conventional and Rheo-High-Pressure Die Cast Low Silicon Aluminum Alloys in NaCl Solutions." CORROSION 75, no. 11 (2019): 1339–53. http://dx.doi.org/10.5006/3254.

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The electrochemical behavior of a low silicon aluminum alloy cast by the conventional and rheo-high-pressure die cast processes is evaluated using polarization test and electrochemical impedance spectroscopy in 0.01 M, 0.05 M, 0.1 M, and 0.6 M sodium chloride solutions. Compared to the conventional high-pressure die cast process, rheocasting introduces some alterations in the microstructure including the presence of aluminum grains with different sizes, formed at different solidification stages. According to the results of the anodic polarization test, conventional cast and rheocast samples sh

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Kolahdooz, Amin. "Investigation of the hardness improvement for Al-A380 alloy using the controlled atmosphere in the mechanical stirring casting method." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 233, no. 2 (2018): 225–33. http://dx.doi.org/10.1177/0954408918773526.

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This work studied the semisolid (SSM) Al-A380 alloy formed by mechanical stirring under the circumstances of controlled atmosphere with argon gas. The A380 aluminium alloy produced due to this process can be used instead of the forging processes or die casting with better mechanical properties. In this paper, first, the effects of the solid fraction, the stirring speed and the mold temperature on the hardness and microstructure are studied using a mechanical stirrer. Then some tests such as XRD and ultrasonic test are done to investigate the effect of using the controlled atmosphere system. By

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Wenzelburger, Martin, Martin Silber, and Rainer Gadow. "Manufacturing of Light Metal Matrix Composites by Combined Thermal Spray and Semisolid Forming Process – Summary of the Current State of Technology." Key Engineering Materials 425 (January 2010): 217–44. http://dx.doi.org/10.4028/www.scientific.net/kem.425.217.

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The demand for lightweight structures in the automotive and aerospace industry increases permanently, and the importance of lightweight design principles is also increasing in other industrial branches, aiming towards improved energy efficiency and sustainability. Light metals are promising candidates to realize security relevant lightweight components because of their high specific strength; and amongst them, aluminum alloys are the most interesting materials due to their high plasticity and strain to failure, good processability, passivation in oxygen containing atmosphere, and low cost. How

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Qiu, Zhi Yan, Bing Zhou, Shuai Lu, Ke Ping Chen, Chun Xu, and Zhan Yong Wang. "Microstructures, Simulations and Solidification Behaviors of A356 Semisolid Aluminium Alloy Prepared by Stirring Integrated Transfer-Heat Technology under Different Cooling Mediums." Solid State Phenomena 330 (April 12, 2022): 3–10. http://dx.doi.org/10.4028/p-9i8e01.

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Based on the theory of grain refinement, the microstructures and simulations of A356 semi-solid aluminum alloy under different cooling mediums were studied. The experiment and simulation results show that water cooling is better than any other cooling mediums. Combined with the simulation of stirring and heat dissipation in SIT device, the changes of temperature field and solid fraction of the melt were studied to help understand the nucleation, growth and solidification behavior under the SIT process. During the process, the temperature field of the melt becomes relatively uniform from a larg

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Qi, Mingfan, Yonglin Kang, Jingyuan Li, et al. "Microstructures refinement and mechanical properties enhancement of aluminum and magnesium alloys by combining distributary-confluence channel process for semisolid slurry preparation with high pressure die-casting." Journal of Materials Processing Technology 285 (November 2020): 116800. http://dx.doi.org/10.1016/j.jmatprotec.2020.116800.

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Nakamura, Ryoji, Kenta Takahashi, and Masahiko Ikawa. "Aluminum Alloy Strips Casting Using an Unequal Diameter Twin Roll Caster." Materials Science Forum 449-452 (March 2004): 145–48. http://dx.doi.org/10.4028/www.scientific.net/msf.449-452.145.

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An unequal diameter twin roll caster was devised in order to increase productivity of the strip. This caster could cast the strip thicker than 6mm at the speed of 5m/min. The feature of this caster is that the lower roll was four times larger than the upper roll. The solidification length of the strip could be set longer easily than the conventional twin roll caster for aluminum alloy. Lowsolidification rate semisolid casting and low superheat casting were adopted. These were effective to increase the casting speed without decreasing the thickness of the strip. In the present study, the unequa

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Nakamura, Ryoji, T. Asai, Hisaki Watari, and Shinji Kumai. "Casting of Aluminum Alloy Bar by Semisolid Roll Casting." Solid State Phenomena 141-143 (July 2008): 295–300. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.295.

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Rheo-casting of 4045 aluminum alloy bar was operated using an unequal diameter twin roll caster and a cooling slope. The semisolid slurry was made by the cooling slope. The thickness of the bar was 12 mm and width was 100mm. The casting speed was 1m/min. Quantity of the melt poured on the cooling slope was important to make sound bar. The primary crystal became spherical, and its size was about 40μm.

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HAGA, Toshio, Hisaki WATARI, and Shinichi NISHIDA. "Casting of Aluminum Alloy Strip Using Semisolid Condition." Proceedings of the Materials and processing conference 2019.27 (2019): 432. http://dx.doi.org/10.1299/jsmemp.2019.27.432.

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MOTEGI, Tetsuichi, and Long Yun PIAO. "2330 Semisolid continuous casting of 5052 aluminum alloy." Proceedings of the JSME annual meeting 2005.1 (2005): 721–22. http://dx.doi.org/10.1299/jsmemecjo.2005.1.0_721.

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Nakamura, Ryoji, Hideki Inui, Hisaki Watari, and Shinji Kumai. "Semisolid Roll Casting of Aluminum Alloy Strip and Its Properties." Solid State Phenomena 116-117 (October 2006): 379–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.379.

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A356 was cast into the strip by the semisolid strip casting using an unequal diameter twin roll caster. This process was one of the rheocasting. The semisolid slurry was made by a cooling slope. Solid fraction was about 5%. The casting speed was 20 m/min, and the thickness was 4.4 mm. The as-cast strip could be cold rolled down to 1 mm. The result of tension test of 1mm-thickness-T4 heat-treated strip was as below. Tensile stress was 223 MPa, 0.2 proof stress was 123 MPa and elongation was 21.8%. Deep drawing could be operated to 1 mm-thickness T4 sheet, and L.D.R was attained to 2.0. In some

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Haga, Toshio, Shinichiro Imamura, Ryota Miwa, and Hiroshi Fuse. "Semisolid Casting and Die Casting of Al-4.8%Mg-2%Si Alloy." Solid State Phenomena 327 (January 10, 2022): 172–77. http://dx.doi.org/10.4028/www.scientific.net/ssp.327.172.

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An aluminum alloy, Al–4.8%Mg–2%Si, was cast by die casting and thixocasting, and the properties of the cast specimens were investigated. When the poured molten metal temperature was lower than 640 °C during die casting, it was lower than the liquidus temperature, and the metal became a semisolid slurry in the sleeve of the die casting machine; this fulfills the conditions for rheocasting. A tension test was conducted to investigate the effects of semisolid casting on the mechanical properties of Al–4.8%Mg–2%Si. The ultimate tensile strength and elongation of the ingots cast by die casting and

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Haga, Toshio, Takuya Yamashiki, Hisaki Watari, and Shinichi Nishida. "Burr Formation in Casting Using Vertical-Type High-Speed Twin-Roll Caster." Key Engineering Materials 846 (June 2020): 146–51. http://dx.doi.org/10.4028/www.scientific.net/kem.846.146.

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The mechanism and region of burr formation in casting using a vertical-type high-speed twin-roll caster were investigated using a side-dam plate with a window. A383, an aluminum alloy typically used for casting due to its excellent fluidity at semisolid condition was used. The solid fraction of the semisolid metal ejected from the window was low. When solid metal was ejected from the window, no burr formed. The results suggest that a burr formed when the semisolid metal was ejected in gap between the side-dam plate and the side surface of a roll. The semisolid metal was ejected near the point

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