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Journal articles on the topic 'Al-12Si'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Basavakumar, K. G., P. G. Mukunda, and M. Chakraborty. "Dry sliding wear behaviour of Al–12Si and Al–12Si–3Cu cast alloys." Materials & Design 30, no. 4 (April 2009): 1258–67. http://dx.doi.org/10.1016/j.matdes.2008.07.003.

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2

Zhao, Zhong Kui, Zhen Qiao, Chang Long Li, Qing Zhou Sun, Pu Qing Zhang, and Gui Qing Wang. "Effect of Li on Al-Si Alloys Structure and Properties." Advanced Materials Research 79-82 (August 2009): 119–22. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.119.

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Al-12Si alloys containing1%, 2% and 3% lithium were prepared. The alloys were melted by a vacuum induction furnace. The microstructure was observed by optical microscopy, tensile test was performed at a rate of 1mm•s-1. Hardness was determined by a Vicker’s hardness machine. Adding 1%Li to the of Al-12Si alloy, the alloy is modified and its structure is eutectic. When Li content is 2% or 3%, the structure is hyper-eutectic, and proeutectic Si-phases are present. The Al-12Si-1Li alloy has a tensile strength of 190MPa and an elongation of 1%. With the increment of lithium, the strength and elongation of Al-12Si containing Li alloys gradually decreases, because of the presence of proeutectic Si-phases. The alloys exhibits hardening behaviors when ageing at 200°C, and the hardness decreases to a value with the prolongation of the ageing time.

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3

Gao, Pei Hu, Jian Ping Li, Zhong Yang, Yong Chun Guo, and Yan Rong Wang. "Corrosion Resistance of Al-12Si Coatings on AZ91 Magnesium Alloy Prepared through Flame Spray." Materials Science Forum 765 (July 2013): 639–43. http://dx.doi.org/10.4028/www.scientific.net/msf.765.639.

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In this study, Al-12Si alloy coatings with different thickness were prepared through flame spray on the surface of the AZ91 magnesium alloy to improve its corrosion resistance. The corrosion resistance was characterized through corrosion potential using electrochemical methods. The Al-12Si alloy coatings were heat treated at 100 °C, 200 °C and 300 °C for 6, 12, 18 and 24 hours. The effects of heat treatment temperature and time on the coatings’ corrosion resistance were discussed. It was found that there were no phase changes during the deposition of Al-12Si coatings through flame spray and heat treatment. The greater the coating thickness was, the higher the corrosion potential was. After annealing, the inner microstructure of the Al-12Si coating was densified furtherly and the annealed coatings had higher corrosion potential and better corrosion resistance. The coating annealed at 100 °C for 18 hours had the highest corrosion potential and the best corrosion resistance in the same coating thickness.

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4

Dai, Shihan, Zeyu Bian, Mingliang Wang, Yi Wu, Dong Chen, Hongping Li, and Haowei Wang. "The High-Temperature Creep Behavior of In-Situ TiB2 Particulate Reinforced Al12Si4Cu2NiMg Composite." Metals 8, no. 11 (November 7, 2018): 917. http://dx.doi.org/10.3390/met8110917.

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In the present work, the in-situ TiB2/Al12Si4Cu2NiMg (denoted as ‘Al-12Si’) composites were successful synthesized through the salt-metal reaction route. The influences of weight fraction (0, 4, and 9 wt.%) and heat treatment (T5 and T7) on the tensile creep deformation were studied at ≥623 K under constant load in air. At the investigated temperature and stress condition, TiB2 particles increased creep deformation resistance, as compared to the unreinforced alloy, while the composites presented similar strength when the weight fraction of reinforcement increased from 4% to 9%. It was found that the steady-state creep rate was lower in the 4 wt.% TiB2/Al-12Si composite (T5), as compared with that in the 4 wt.% TiB2/Al-12Si composite (T7). The result has been rationalized by using the load-partitioning model and relative to the evolution of the rigid phase. The creep deformation of the 4 wt.% TiB2/Al-12Si composite was controlled by the climb of dislocations in the aluminum alloy matrix.

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5

Zhou, Ling Zhan, Yin Jiang Peng, Xiu Rong Zhu, Guang Ming Zhang, Li Ming Yang, and Hong Xia Shi. "Influence of Ti to the Microstructure and Mechanical Properties of Al-12Si-3.2Cu-1Mg-2.4Ni Piston Alloy." Applied Mechanics and Materials 477-478 (December 2013): 1278–83. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.1278.

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Al-12Si-3.2Cu-1Mg-2.4Ni-χTi (χ=0, 0.2) alloys were prepared by squeeze casting process, and then heat-treated. The mechanical properties were tested at 350°C, the microstructure and phases in them were investigated by optical microscope, SEM, EDS and XRD. It is found that the grain size has an obvious increment after 0.2 wt. % Ti additions to Al-12Si-3.2Cu-1Mg-2.4Ni, and the ultimate tensile strength at elevated-temperature increased accordingly. Intermetallic compounds, such as γ-Al7Cu4Ni, M-Mg2Si, Q-Al5Cu2Mg8Si6 and δ-Al3CuNi existing in alloys with and without Ti addition. Needle-like Ti containing phase with the elements of Al, Si and Ti created in Al-12Si-3.2Cu-1Mg-2.4Ni-0.2Ti alloy, and the eutectic Si is found to distribute by the side of Ti containing phase.

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6

Zhang, Shikai, Pan Ma, Yandong Jia, Zhishui Yu, Rathinavelu Sokkalingam, Xuerong Shi, Pengcheng Ji, Juergen Eckert, and Konda Gokuldoss Prashanth. "Microstructure and Mechanical Properties of Al–(12-20)Si Bi-Material Fabricated by Selective Laser Melting." Materials 12, no. 13 (July 2, 2019): 2126. http://dx.doi.org/10.3390/ma12132126.

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In this study, a combination of Al–12Si and Al–20Si (Al–(12-20)Si) alloys was fabricated by selective laser melting (SLM) as a result of increased component requirements such as geometrical complexity and high dimensional accuracy. The microstructure and mechanical properties of the SLM Al–(12-20)Si in as-produced as well as in heat-treated conditions were investigated. The Al–(12-20)Si interface was in the as-built condition and it gradually became blurry until it disappeared after heat treatment at 673 K for 6 h. This Al–(12-20)Si bi-material displayed excellent mechanical properties. The hardness of the Al–20Si alloy side was significantly higher than that of the Al–12Si alloy side and the disparity between both sides gradually decreased and tended to be consistent after heat treatment at 673 K for 6 h. The tensile strength and elongation of the Al–(12-20Si) bi-material lies in between the Al–12Si and Al–20Si alloys and fracture occurs in the Al–20Si side. The present results provide new insights into the fabrication of bi-materials using SLM.

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7

Wu, Mei Ling, Feng Wei Guo, Ming Li, and Ya Fang Han. "Effect of Trace Strontium Addition on Microstructure and Room Temperature Fracture Toughness of Nb-12Si-22Ti Alloys." Materials Science Forum 849 (March 2016): 603–8. http://dx.doi.org/10.4028/www.scientific.net/msf.849.603.

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The effect of strontium (Sr) addition (0.2 at.%) on the microstructure and mechanical properties of Nb-12Si-22Ti alloys were studied. Microstructure of the alloys was observed by scanning electron microscope, and their phase compositions were analyzed with X-ray diffraction and Electro-Probe Microanalyzer. The room temperature fracture toughness was measured. The results indicated that the phases of Nbss and Nb3Si were presented in Nb-12Si-22Ti alloys. However, with the Al and Sr addition, the alloys were composed of Nbss and β-Nb5Si3. Compared with the Nb-12Si-22Ti alloys, the value of room temperature fracture toughness increased about 46% and 73% with the addition of Al and Sr alloy, respectively. The relationship between the microstructure and the mechanical properties was discussed.

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8

Yang, Zi An, Zhi Lei Xiang, Zi Yong Chen, Wei Min Ren, Zhong Hao Li, and Chao Tan. "Research on Microstructure and Properties of TiB₂/Al-Si Multi-Element Piston Alloy Composite." Materials Science Forum 1035 (June 22, 2021): 892–99. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.892.

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The Al-12Si-4Cu-2Ni-0.9Mg was used as the matrix, TiB2/Al-12Si-4Cu-2Ni-0.9Mg composite material was prepared by adding Al-TiB2 in master alloy, and the mass fraction of TiB2 particles in the composite material was 3%. TiB2 particles were prepared by melt self-propagating direct synthesis method. Based on studying the influence of mechanical stirring speed on the distribution of TiB2 particles during the preparation of Al-TiB2 master alloy, the optimal mechanical stirring speed was optimized to 800 r/min. TiB2/Al-12Si-4Cu-2Ni-0.9Mg composite material was prepared by remelting and dilution method. The as-cast solidified structure of the composite material was mainly composed of α-Al matrix, Si phase and TiB2 particles, and TiB2 particles were evenly distributed. Under the condition of 360 °C(Working temperature of common piston), the tensile strength of the composite material was 15.4% higher than that of the base material, and the yield strength of the composite material was 29.4% higher than that of the base material.

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9

Rusin, N. M., and A. L. Skorentsev. "Features of plastic flow of sintered Al-12Si-xSn alloys." Physics and Chemistry of Materials Treatment, no. 6 (2018): 48–59. http://dx.doi.org/10.30791/0015-3214-2018-6-48-59.

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10

Chen, Guozheng, Weizheng Zhang, and Tateoki Iizuka. "The fatigue fracture characteristics of the bond zone of aluminum matrix composites (Al-12Si/ABOw) with Al-12Si alloys." Materials Science and Engineering: A 755 (May 2019): 181–89. http://dx.doi.org/10.1016/j.msea.2019.04.017.

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11

Basavakumar, K. G., P. G. Mukunda, and M. Chakraborty. "Impact toughness in Al–12Si and Al–12Si–3Cu cast alloys—Part 1: Effect of process variables and microstructure." International Journal of Impact Engineering 35, no. 4 (April 2008): 199–205. http://dx.doi.org/10.1016/j.ijimpeng.2007.03.002.

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12

Shivaprasad, C. G., S. Narendranath, Vijay Desai, Sujeeth Swami, and M. S. Ganesha Prasad. "Influence of Combined Grain Refinement and Modification on the Microstructure and Mechanical Properties of Al-12Si, Al-12Si-4.5Cu Alloys." Procedia Materials Science 5 (2014): 1368–75. http://dx.doi.org/10.1016/j.mspro.2014.07.454.

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13

Basavakumar, K. G., P. G. Mukunda, and M. Chakraborty. "Influence of grain refinement and modification on dry sliding wear behavior of Al-12Si and Al-12Si-3Cu cast alloys." International Journal of Materials Research 99, no. 8 (August 2008): 900–906. http://dx.doi.org/10.3139/146.101718.

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14

Ji, Yameng, Yanpeng Yuan, Weizheng Zhang, Yunqing Xu, and Yuwei Liu. "Elevated Temperature Tensile Creep Behavior of Aluminum Borate Whisker-Reinforced Aluminum Alloy Composites (ABOw/Al–12Si)." Materials 14, no. 5 (March 4, 2021): 1217. http://dx.doi.org/10.3390/ma14051217.

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In order to evaluate the elevated temperature creep performance of the ABOw/Al–12Si composite as a prospective piston crown material, the tensile creep behaviors and creep fracture mechanisms have been investigated in the temperatures range from 250 to 400 °C and the stress range from 50 to 230 MPa using a uniaxial tensile creep test. The creep experimental data can be explained by the creep constitutive equation with stress exponents of 4.03–6.02 and an apparent activation energy of 148.75 kJ/mol. The creep resistance of the ABOw/Al–12Si composite is immensely improved by three orders of magnitude, compared with the unreinforced alloy. The analysis of the ABOw/Al–12Si composite creep data revealed that dislocation climb is the main creep deformation mechanism. The values of the threshold stresses are 37.41, 25.85, and 17.36 at elevated temperatures of 300, 350 and 400 °C, respectively. A load transfer model was introduced to interpret the effect of whiskers on the creep rate of this composite. The creep test data are very close to the predicted values of the model. Finally, the fractographs of the specimens were analyzed by Scanning Electron Microscope (SEM), the fracture mechanisms of the composites at different temperatures were investigated. The results showed that the fracture characteristic of the ABOw/Al–12Si composite exhibited a macroscale brittle feature range from 300 to 400 °C, but a microscopically ductile fracture was observed at 400 °C. Additionally, at a low tensile creep temperature (300 °C), the plastic flow capacity of the matrix was poor, and the whisker was easy to crack and fracture. However, during tensile creep at a higher temperature (400 °C), the matrix was so softened that the whiskers were easily pulled out and interfacial debonding appeared.

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15

Xu, Zheng Bin, Yong Zhi Zou, Wen Chao Wang, and Jian Min Zeng. "An Investigation on the Hydrogen Content in Al-12Si Alloy Melt." Advanced Materials Research 97-101 (March 2010): 785–88. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.785.

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This present work investigate the hydrogen content in Al-12Si alloy at different holding temperatures of 993K, 1023K, and 1053K and under different ambient relative humidity 30%RH, 50%RH, 80%RH. The relationship of the hydrogen content with atmosphere relative humidity and the reaction time was investigated. A HYSCAN II analyzer was used to evaluate the hydrogen content in aluminum melts. The experimental results show that the hydrogen content increased with the holding temperature and the relative humidity. At the temperature 1053K, the hydrogen content has an inverse change. The hydrogen content is more depend on the liquid structure than physical mass transfer and chemical reaction because of the sudden change in liquid microstructure. A group of kinetic regression equations of the hydrogen absorption in Al-12Si melts was obtained.

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16

Rathod, Hemant J., T. Nagaraju, K. G. Prashanth, and U. Ramamurty. "Tribological properties of selective laser melted Al 12Si alloy." Tribology International 137 (September 2019): 94–101. http://dx.doi.org/10.1016/j.triboint.2019.04.038.

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17

Uzun, Orhan, Tuncay Karaaslan, and Mustafa Keskin. "Hardness evaluation of Al–12Si–0.5Sb melt–spun ribbons." Journal of Alloys and Compounds 358, no. 1-2 (August 2003): 104–11. http://dx.doi.org/10.1016/s0925-8388(03)00070-7.

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18

Konda Gokuldoss, Prashanth. "Work hardening in selective laser melted Al‐12Si alloy." Material Design & Processing Communications 1, no. 2 (March 5, 2019): e46. http://dx.doi.org/10.1002/mdp2.46.

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19

Bayraktar, Şenol, and Onur Demir. "Processing of T6 heat-treated Al-12Si-0.6Mg alloy." Materials and Manufacturing Processes 35, no. 3 (February 17, 2020): 354–62. http://dx.doi.org/10.1080/10426914.2020.1732412.

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20

Jiru, Woldetinsay Gutu, Mamilla Ravi Sankar, Uday Shanker Dixit, and Hengcheng Liao. "Laser surface melting of Al-12Si-4Cu-1.2Mn alloy." International Journal of Mechatronics and Manufacturing Systems 11, no. 2/3 (2018): 230. http://dx.doi.org/10.1504/ijmms.2018.092876.

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21

Dixit, Uday Shanker, Hengcheng Liao, Woldetinsay Gutu Jiru, and Mamilla Ravi Sankar. "Laser surface melting of Al-12Si-4Cu-1.2Mn alloy." International Journal of Mechatronics and Manufacturing Systems 11, no. 2/3 (2018): 230. http://dx.doi.org/10.1504/ijmms.2018.10013942.

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22

Zhang, Xiaohang, Weizheng Zhang, Yanpeng Yuan, Zengjian Feng, and Yanjun Wang. "Elevated temperature mechanical properties and fracture behaviors of the bond zone of aluminum matrix composites (Al-12Si/ABOw) with Al-12Si alloys." Materials Science and Engineering: A 700 (July 2017): 25–32. http://dx.doi.org/10.1016/j.msea.2017.05.116.

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23

Chen, Guozheng, Weizheng Zhang, and Yanpeng Yuan. "Experimental study on low‐cycle fatigue behaviours of the specimen consisting of the composites (Al‐12Si/ABOw) and matrix Al‐12Si alloys." Fatigue & Fracture of Engineering Materials & Structures 43, no. 8 (March 22, 2020): 1731–42. http://dx.doi.org/10.1111/ffe.13213.

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24

Zhang, Qiang, Ye Zhu, Jie Cai Han, and Gao Hui Wu. "Effect of Silicon Addition and Thermal History on the Thermal Expansion Behavior of SiC/Al Composites." Materials Science Forum 546-549 (May 2007): 649–52. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.649.

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Two Al-Si alloys (Al-12Si and Al-20Si) and an industrial pure Al were reinforced with 70vol.% dual-sized SiC particles. The composites experienced annealing treatment, to investigate the effect of silicon addition and thermal history on the thermal expansion behavior of high SiC content aluminum matrix composites. The results showed that silicon additions led to a beneficial reduction in the coefficients of thermal expansion (CTEs) of the composites. In the temperature range between 20°C and 400°C, a continuous increase in CTEs with temperature was observed for SiCp/pure Al composite. However, the CTEs of SiCp/Al-12Si and SiCp/Al-20Si showed the maxima at 350°Cand 250°C respectively, then diminished at higher temperatures. This was related to the change of solid solubility of silicon in aluminum at elevated temperatures. The thermal expansion behavior of SiCp/Al composites was also influenced by thermal history. After annealing treatment, the CTEs were reduced when compared with those of as-cast composites. Annealing treatment reduced the original thermal residual stresses, and then altered thermal expansion behavior of the composites.

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25

Ahlatci, Hayrettin, A. Durmaz, A. Balta, M. Acarer, and E. Candan. "Effect of Ti on the Corrosion Behaviour of In Situ Mg₂Si Particle Reinforced Al–12Si-20Mg-XTi Alloys." Materials Science Forum 636-637 (January 2010): 511–16. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.511.

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In this study, corrosion behaviour of Al–12Si-20Mg-XTi alloys (Ti content varied between 0 and 4 wt.%) was investigated. Characterizations of the alloys were carried out by microstructural examinations and corrosion tests. Microstructural results showed that precipitation of the Mg2Si phases was observed in Al-12Si-20Mg-XTi alloy matrix as two different morphologies; i.e. as a polyhedral primary particle and as a chinese script. Upon addition of Ti, Al3Ti intermetallic precipitated in the alloy. Corrosion tests were carried out by immersing the alloys in “30 g/l NaCl+10 ml/l HCl” solution. Evaluation of corrosion was determined by measuring weight loss for 24 hours and by potentiodynamic polarization tests. Corrosion resistance of the alloy was approximately constant with 1 wt % Ti addition whereas at higher additions, the corrosion rate increased.

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26

Li, Ying Long, Hua Ding, and Fu Rong Cao. "Effects of High Density Ultrasonic Field Coupling on the Microstructures and Properties of Al-Si Alloy." Advanced Materials Research 291-294 (July 2011): 1981–88. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.1981.

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The effects of high density ultrasonic field coupling on the microstructures and properties of Al-12Si alloy were investigated. It is shown that when the melt undergoes ultrasonic coupling processing prior to solidification, the nucleation rate of liquid phase can be raised to make α(Al) dendrite transform towards near equiaxed grains, the growth of Si phase is restrained and eutectic Si microstructure is refined due to acoustic streaming effect and thermal mechanism; When the melt undergoes ultrasonic coupling processing during the melt solidification, large degree of supercooling is produced in the liquid phase in the solidification interface front edge to reduce the critical radius of crystal nucleus and critical work of nucleation and break up, rupture by melting and refine the Si phase to improve obviously the strength of Al-12Si alloy due to its cavitation effect, acoustic streaming action and heat undulation; The crushing effect of ultrasonic coupling on Si phase occurs mainly during the crystallizing solidification and threshold sound intensity exists.

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27

Wang, Z., K. G. Prashanth, A. K. Chaubey, L. Löber, F. P. Schimansky, F. Pyczak, W. W. Zhang, S. Scudino, and J. Eckert. "Tensile properties of Al–12Si matrix composites reinforced with Ti–Al-based particles." Journal of Alloys and Compounds 630 (May 2015): 256–59. http://dx.doi.org/10.1016/j.jallcom.2014.12.254.

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28

Ahlatci, Hayrettin. "Wear and corrosion behaviours of extruded Al–12Si–XMg alloys." Materials Letters 62, no. 20 (July 2008): 3490–92. http://dx.doi.org/10.1016/j.matlet.2008.03.003.

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29

PARK, Jin-Ju, Sang-Hoon LEE, Min-Ku LEE, and Chang-Kyu RHEE. "Dispersion of ultrafine SiC particles in molten Al-12Si alloy." Transactions of Nonferrous Metals Society of China 21 (March 2011): s33—s36. http://dx.doi.org/10.1016/s1003-6326(11)61056-x.

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30

Zhang, Xiao Hua, and Si Rong Yu. "Liquid Corrosion Property of Al-12Si-10Cu Energy Storage Alloy." Applied Mechanics and Materials 513-517 (February 2014): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.177.

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According to recent researches, aluminum alloy is an ideal choice for solar energy storage technology. But the erosion nature limits its promotion and application. Therefore, it is particularly important to research the corrosion behavior and the corrosion mechanism. In this paper, the 304 stainless steel was used as the container material. By analyzing the corrosion kinetics curves, the erosion thickness increases and the erosion rate decreases with the erosion time extension. Electron probe, X-Ray Diffraction (XRD) and other instruments were used to research the corrosion behavior and mechanism of erosion products. The results show that the erosion form is uniform corrosion. The erosion phenomenon is due to the diffusion corrosion of Al element. Si, Al0.5Fe3Si0.5 compound and Al95Fe4Cr compound in the erosion layers can retard the diffusion of Al.

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31

Demir, Ali Gökhan, and Barbara Previtali. "Multi-material selective laser melting of Fe/Al-12Si components." Manufacturing Letters 11 (January 2017): 8–11. http://dx.doi.org/10.1016/j.mfglet.2017.01.002.

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32

Basavakumar, K. G., P. G. Mukunda, and M. Chakraborty. "Influence of melt treatments and turning inserts on cutting force and surface integrity in turning of Al–12Si and Al–12Si–3Cu cast alloys." Surface and Coatings Technology 201, no. 8 (January 2007): 4757–66. http://dx.doi.org/10.1016/j.surfcoat.2006.10.015.

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33

Mrdak, Mihailo, Bojan Medjo, Darko Veljić, Miodrag Arsić, and Marko Rakin. "The influence of powder feed rate on mechanical properties of atmospheric plasma spray (APS) Al-12Si coating." REVIEWS ON ADVANCED MATERIALS SCIENCE 58, no. 1 (January 1, 2019): 75–81. http://dx.doi.org/10.1515/rams-2019-0007.

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Abstract In this paper, structural and mechanical properties of APS - atmospheric plasma spray coating Al-12Si are presented. The aim of the research was the optimisation of the flow of powder to produce layers with optimal mechanical and structural properties that will be applied to the worn out parts of airplanes. Three groups of samples were produced, by utilising three powder feed rates: 30 g/min, 45 g/min and 60 g/min. Evaluation of layers’ microhardness was done using HV0.3 method and the bond strengthwas determined by testing of tensile strength. Surface morphology of the deposited powder particles was examined on SEM (Scanning Electron Microscope). The microstructure of the coating with the best measured mechanical properties was subsequently examined in etched condition on optical microscope and SEM (in accordance with the standard PN 585005, Pratt & Whitney). Also, fracture morphology of this coating in deposited state was examined using SEM. It was found that powder feed control with atmospheric plasma spraying can produce dense layers of Al-12Si coating with good bond strength.

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34

Ren, Hai Guo, and Zhi Long Zhao. "The Initial Practice on Electro-Modification Processes to Al-12Si Alloys." Advanced Materials Research 189-193 (February 2011): 814–17. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.814.

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The modification of Si-flakes from coarse acicular to fine fibrous is a common issue in Al-Si alloys casting products. The one of aims of this work is to practice the probability of applying the pulsed electric discharge (PED) to modify the morphology of Si-flakes. In the experiment, the Al-12Si alloy cast in plaster mold was treated with high voltage pulse electric discharge during the solidification. The combined effects of strong pulse electric current and chemical additives of refiner/modifier on solidification structure of eutectic silicon and tensile properties were studied. The experimental results indicated that the eutectic silicon flakes can be fragmentized by high-density pulse electric current. The best tensile properties were obtained when pulse electric discharge was used and combined with a trifle addition of refiner/modifier into the molten metal.

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35

Xia, F., M. X. Liang, X. S. Gao, Y. C. Guo, J. P. Li, W. Yang, and Z. K. Zhang. "Instability of in situ TiC particles in an Al-12Si alloy." Journal of Materials Research and Technology 9, no. 5 (September 2020): 11361–69. http://dx.doi.org/10.1016/j.jmrt.2020.07.063.

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36

Vander Voort, George Frederic, Beatriz Suárez-Peña, and Juan Asensio-Lozano. "Metallographic Assessment of Al-12Si High-Pressure Die Casting Escalator Steps." Microscopy and Microanalysis 20, no. 5 (July 7, 2014): 1486–93. http://dx.doi.org/10.1017/s143192761400172x.

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AbstractA microstructural characterization study was performed on high-pressure die cast specimens extracted from escalator steps manufactured from an Al-12 wt.% Si alloy designed for structural applications. Black and white, color light optical imaging and scanning electron microscopy techniques were used to conduct the microstructural analysis. Most regions in the samples studied contained globular-rosette primary α-Al grains surrounded by an Al-Si eutectic aggregate, while primary dendritic α-Al grains were present in the surface layer. This dendritic microstructure was observed in the regions where the melt did not impinge directly on the die surface during cavity filling. Consequently, microstructures in the surface layer were nonuniform. Utilizing physical metallurgy principles, these results were analyzed in terms of the applied pressure and filling velocity during high-pressure die casting. The effects of these parameters on solidification at different locations of the casting are discussed.

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37

Anandkumar, R., A. Almeida, and R. Vilar. "Wear behavior of Al–12Si/TiB2 coatings produced by laser cladding." Surface and Coatings Technology 205, no. 13-14 (March 2011): 3824–32. http://dx.doi.org/10.1016/j.surfcoat.2011.01.048.

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38

Prashanth, K. G., R. Damodaram, S. Scudino, Z. Wang, K. Prasad Rao, and J. Eckert. "Friction welding of Al–12Si parts produced by selective laser melting." Materials & Design 57 (May 2014): 632–37. http://dx.doi.org/10.1016/j.matdes.2014.01.026.

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39

Paksoy, Ahmet Hilmi, Ozde Deprem, Onur Tazegul, and Huseyin Cimenoglu. "Tribology of SiCp reinforced Al-12Si matrix composite coatings in water." Tribology International 110 (June 2017): 392–400. http://dx.doi.org/10.1016/j.triboint.2016.10.037.

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40

Dhiman, Mohit, D. K. Dwivedi, Rakesh Sehgal, and I. K. Bhat. "Effect of Iron on Microstructure of Al-12Si-1Cu-0.1Mg Alloy." Materials and Manufacturing Processes 23, no. 8 (October 30, 2008): 805–8. http://dx.doi.org/10.1080/10426910802384565.

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Rusin, N. M., and A. L. Skorentsev. "Features of the Plastic Flow of Sintered Al–12Si–xSn Alloys." Inorganic Materials: Applied Research 10, no. 3 (May 2019): 682–90. http://dx.doi.org/10.1134/s2075113319030377.

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Birol, Yücel. "Microstructural evolution during annealing of a rapidly solidified Al–12Si alloy." Journal of Alloys and Compounds 439, no. 1-2 (July 2007): 81–86. http://dx.doi.org/10.1016/j.jallcom.2006.08.068.

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43

Chou, R., J. Milligan, M. Paliwal, and M. Brochu. "Additive Manufacturing of Al-12Si Alloy Via Pulsed Selective Laser Melting." JOM 67, no. 3 (January 13, 2015): 590–96. http://dx.doi.org/10.1007/s11837-014-1272-9.

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44

ZHANG, Gui-feng, Wei SU, Jian-xun ZHANG, and A. SUZUMURA. "Development of Al-12Si-xTi system active ternary filler metals for Al metal matrix composites." Transactions of Nonferrous Metals Society of China 22, no. 3 (March 2012): 596–603. http://dx.doi.org/10.1016/s1003-6326(11)61219-3.

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45

Kumar, K. G. Basava, P. G. Mukunda, and M. Chakraborty. "Influence of melt treatments and polished CVD diamond-coated insert on cutting force and surface integrity in turning of Al-12Si and Al-12Si-3Cu cast alloys." International Journal of Manufacturing Research 2, no. 2 (2007): 117. http://dx.doi.org/10.1504/ijmr.2007.014639.

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46

Rodríguez-Guerrero, Alejandro, Javier Narciso, Enrique Louis, and F. Rodríguez-Reinoso. "Reducing Threshold Pressure for Infiltration of Al-12Si Alloys into Carbon Particle Compacts by Placing a Thin Layer of Sn at the Infiltration Front." Materials Science Forum 539-543 (March 2007): 785–90. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.785.

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Abstract:

The oxide layer that usually covers the surface of liquid aluminum and its alloys, is one of the main factors that hinders infiltration of these alloys into graphite particle compacts. The oxide film increases the threshold pressure for infiltration and the porosity of the resulting composites is large because the wetting at the metal/carbon interface is reduced. Infiltrating graphite compacts with tin requires, however, a much lower pressure, less than half of that required to infiltrate the eutectic Al-12Si alloy. As the surface tension of tin is half that of the Al-12Si alloy, this result indicates that wetting at the Sn/C interface is slightly better. As a result, porosity in the infiltrated samples is reduced. In order to reduce the threshold pressure and improve the properties of Al-Si/graphite composites, a novel method has been used in this work that consists in placing a thin film of tin at the compact end through which infiltration takes place. During the infiltration process the graphite particles are firstly infiltrated by tin, which is pushed by the aluminum alloy, thus avoiding the oxidation of the latter. The method proved to be very effective in reducing the threshold pressure, while keeping almost constant the infiltration rate.

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Zhao, Jing Rui, Yong Du, Li Jun Zhang, Shu Hong Liu, Jin Huan Xia, and Jin Wei Wang. "Thermodynamic Calculation of the Liquidus Projections of the Al-Cu-Fe-Mg, Al-Cu-Mg-Si, and Al-Fe-Mg-Si Quaternary Systems on Al-Rich Corner." Materials Science Forum 993 (May 2020): 1031–42. http://dx.doi.org/10.4028/www.scientific.net/msf.993.1031.

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Abstract:

The thermodynamic calculations of Al-Cu-Fe-Mg, Al-Cu-Mg-Si and Al–Fe–Mg–Si quaternary systems were carried out using CALPHAD method, based on the Al–Cu–Fe–Mg–Si thermodynamic database. The liquidus projection of Al–Cu–Fe–Mg, Al–Cu–Mg–Si and Al–Fe–Mg–Si quaternary systems at Al-rich corner were constructed, and the solidification structures of Al-12Cu-7Mg-1Fe, Al-14Cu-2Mg-4Si, Al-0.3Fe-6Mg-12Si (wt.%) alloys were analyzed by the Scheil solidification simulation. The calculated results agree well with the previous experimental data. The liquidus projections of three quaternary aluminum alloys at the Al-rich corner were accurately plotted, which could be helpful for the analysis of solidification process of multicomponent alloy systems, and provide an important theoretical basis for the material design of aluminum alloys.

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Yu, Seung-Baek, and Mok-Soon Kim. "Microstructure and High Temperature Deformation of Extruded Al-12Si-3Cu-Based Alloy." Metals 6, no. 2 (February 2, 2016): 32. http://dx.doi.org/10.3390/met6020032.

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Anasyida, A. S., A. R. Daud, and M. J. Ghazali. "Dry sliding wear behaviour of Al–12Si–4Mg alloy with cerium addition." Materials & Design 31, no. 1 (January 2010): 365–74. http://dx.doi.org/10.1016/j.matdes.2009.06.007.

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Milligan, J., and M. Brochu. "Cladding AA7075 with a cryomilled Al–12Si alloy using spark plasma sintering." Materials Science and Engineering: A 578 (August 2013): 323–30. http://dx.doi.org/10.1016/j.msea.2013.04.113.

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