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Journal articles on the topic 'Semi-solid phase'

Author: Grafiati

Published: 28 June 2021

Last updated: 7 February 2022

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1

Uhlén, Mathias, Thomas Hultman, Johan Wahlberg, et al. "Semi-automated solid-phase DNA sequencing." Trends in Biotechnology 10 (1992): 52–55. http://dx.doi.org/10.1016/0167-7799(92)90169-v.

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2

Hu, Xiao Gang, Qiang Zhu, Helen V. Atkinson, Min Luo, Fan Zhang, and Wen Ying Qu. "Application of Multiphase Modelling in Semi-Solid Die Casting: Blister Prediction." Solid State Phenomena 256 (September 2016): 139–45. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.139.

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One-phase modelling is widely used as an optimization and design tool for semi-solid casting process. By this approach, semi-solid alloy is taken as a homogeneous fluid and flow behaviours are represented by using the rheological properties of the mixture. A single set of conservation equations is solved to simulate the mould filling, without considering the different motilities between the liquid and the solid phase. Therefore, defects due to phase segregation cannot be predicted and particle tracking cannot be carried out. This study is focused on multiphase (i.e. a liquid-particle-air syste

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3

Liu, Zhao Ming, Xin Wang, Ying Bo Zhang, and Hong Gao. "Effects of Semi-Solid Isothermal Treatments on Microstructures of Quasicrystal Reinforced AZ91 Alloys." Advanced Materials Research 430-432 (January 2012): 551–55. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.551.

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The as-cast and semi-solid microstructures of quasicrystal reinforced AZ91 alloys were investigated. The results show that the main phases of as-cast AZ91ZY1 and AZ91ZY2 alloys are all α-Mg, I-phase, Mg17Al12 and Al2Y phase. The grain boundary phases contents increase with increasing Y and Zn contents. The better semi-solid processing technological parameters of AZ91ZY1 and AZ91ZY2 alloys are 580 °C, 30 min and 560 °C, 30 min respectively. The better semi-solid processing temperature of AZ91ZY2 alloy is lower than the one of AZ91ZY1 alloy is mainly attributed to the higher contents of the grai

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4

Liu, Zheng, and Xiao Mei Liu. "Study on Fractal Characteristics of Primary Phase Morphology in Semi-Solid A356 Alloy." Advanced Materials Research 139-141 (October 2010): 653–56. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.653.

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Semi-solid A356 slurry was prepared by compound process, and the fractal characteristic of primary phase morphology was researched. The fractal dimensions of primary phase morphology in semi-solid A356 alloy were calculated by the calculating program written to calculate the fractal dimensions of box-counting in the imagine of morphology of semi-solid primary phase in A356 alloy. The results indicated that the primary phase morphology in semi-solid A356 prepared by compound process is characterized by fractal dimension, and the primary phase morphology prepared by the different technology para

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5

Li, Nai Yong, Han Xiao, Chi Xiong, De Hong Lu, and Rong Feng Zhou. "Microstructure of Semi-Solid Extruded Copper Alloy after Heat Treatment." Solid State Phenomena 285 (January 2019): 146–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.146.

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The semi-solid extruded ZCuSn10P1 copper alloy were annealed at different temperatures and time. The influences of heat treatment temperature and holding time on the microstructure of semi-solid ZCuSn10P1 copper alloy were investigated. The results show that with the increase of heat treatment temperature, the morphology of the semi-solid microstructure was improved, the sharp angle around the primary phase α-Cu and the liquid droplets were reduced. With the increase of heat treatment time, the solid-liquid segregation of the semi-solid structure was improved. The average grain size of the sol

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6

Yang, Xiang Jie, Ming Wang, Liang Sheng Ding, Hong Min Guo, and Xu Bo Liu. "Squeeze Casting of Semi-Solid A356 Alloy." Solid State Phenomena 217-218 (September 2014): 436–41. http://dx.doi.org/10.4028/www.scientific.net/ssp.217-218.436.

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the rheo-squeeze casting (Rheo-SQC) combining the rheocasting and the SQC was developed, in which semi-solid slurry was produced by the low superheat pouring with a shearing field (LSPSF) process. The three dimensional morphology of the primary α-Al phase and the rest spacing of slurry prepared by LSPSF process have been reconstructed and visualized, and the microstructures of squeeze cast A356 alloy have been obtained. Based on the three dimensional microstructure reconstructed, their three dimensional characterizations such as solid volume fraction, equivalent diameter of the extracted prima

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7

Krchňák, Viktor. "Semi-automated high throughput combinatorial solid-phase organic synthesis." Biotechnology and Bioengineering 61, no. 3 (1999): 135–41. http://dx.doi.org/10.1002/(sici)1097-0290(1998)61:3<135::aid-cc1>3.0.co;2-s.

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8

Koeune, R., and Jean Philippe Ponthot. "A One Phase Thermomechanical Model for Semi-Solid Thixoforming." Solid State Phenomena 141-143 (July 2008): 629–35. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.629.

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In order to model thixoforming processes, previous papers presented a thermomechanical one-phase modelling. This first version of constitutive model revealed several limitations: the model could not degenerate properly to pure solid or liquid behaviour neither to free solid suspensions. The aim of this paper was to propose solutions to overcome these limitations.

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9

Kang, Suk Won, Dock Young Lee, and Ki Bae Kim. "Effect of Isothermal Holding Temperature on Globularization of Primary Solid Phase in Multiplex-Type Slurry Cup." Solid State Phenomena 116-117 (October 2006): 239–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.239.

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In order to produce a high quality and cost effective part in the rheocasting process for an automobile industry it has been important to develop a slurry-on-demand process, which can manufacture the semi-solid slurry having a fine and globular structure of primary solid phase. The morphology of primary solid phase of semi-solid slurry is coarsened and globularized during an isothermal holding process in a solid-liquid region. Accordingly, in this paper, the microstructural evolution of semi-solid slurry during the isothermal holding at a various temperature in solid-liquid region was investig

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10

Wang, Jia, De Hong Lu, Han Xiao, Rong Feng Zhou, Rong Zhou, and Long Biao Wu. "Effect of Rolling-Remelting SIMA Process on Semi-Solid Microstructure of ZCuSn10 Alloy." Solid State Phenomena 217-218 (September 2014): 418–25. http://dx.doi.org/10.4028/www.scientific.net/ssp.217-218.418.

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Semi-solid billet of ZCuSn10 (Wt%: 88.25Cu, 10.48Sn) alloy is prepared by strain induced melt activated (SIMA) method which including rolling and remelting process. Firstly, ZCuSn10 alloy is casted, and rolling samples are cut from ingot casting. Secondly, the rolling samples are two pass or four pass rolled after holding 15 minutes at 450°C, then samples with 10% and 20% pre-deformation degree are obtained. The remelting samples are cut from pre-deformed samples. Lastly, the remelting samples are reheated up to 850°C or 875°C, water quenching after holding for 15 minutes. Then semi-solid micr

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11

Peter, Ildiko, Christian Castella, and Mario Rosso. "The Role of Liquid Phase in SSM Processes." Materials Science Forum 884 (January 2017): 93–114. http://dx.doi.org/10.4028/www.scientific.net/msf.884.93.

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The present chapter reports a short history and a state-of-the art of semi-solid techniques, with particular emphasis to the role of the liquid-solid fraction, being the rheological behaviour of the semi-solid slurry crucial and fundamental. The general description, with the related theoretical fundaments, is based on the data available in the recent and the past literature and finally it is integrated with some experimental results of the research carried out by the authors.

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12

Kang, Suk Won, Ki Bae Kim, Dock Young Lee, Jung-Hwa Mun, and Eui Pak Yoon. "Effect of Pouring Temperature and Holding Time at Semi-Solid Region on the Morphology of Primary Solid Phase in Semi-Solid Slurry." Materials Science Forum 510-511 (March 2006): 782–85. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.782.

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13

Chigome, Samuel, Godfred Darko, Ulrich Buttner, and Nelson Torto. "Semi-micro solid phase extraction with electrospun polystyrene fiber disks." Analytical Methods 2, no. 6 (2010): 623. http://dx.doi.org/10.1039/c0ay00092b.

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14

Guo, Hong Min, and Xiang Jie Yang. "Continuous Fabrication of Sound Semi-Solid Slurry for Rheoforming." Solid State Phenomena 116-117 (October 2006): 425–28. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.425.

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An alternative method has been proposed for the continuous and sample production of SSM slurry for the rheo-forming process. The process named “Low Superheat Pouring with a Shear Field (LSPSF)” dose not use the conventional stirring process, instead, it uses solidification conditions to control nucleation, nuclei survival and grain growth by means of low superheat pouring, vigorous mixing and rapid cooling during the initial stage of solidification combined with thereafter a much slower cooling. The method has been applied to A356, 201 and A380 Al-alloys. The primary phases present in average

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15

Zhao, Hong Jin, Yong Lin Kang, Zhao Hui Wang, and Hai Liang Du. "Effect of Disturbing Conditions in Semi-Solid State on Microstructure Evolution of Magnesium Alloy." Solid State Phenomena 116-117 (October 2006): 296–99. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.296.

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In this paper the microstructure evolution of AZ91HP magnesium alloy casts produced under different disturbing treatment conditions such as non-disturbing, argon blowing and mechanical stirring in semi-solid state after holding a short time was studied. The results show that the grains of AZ91HP alloy casts refined, the secondary dendritic arms grown and the dendrites tend to rosette shape with the decrease of holding temperature. External disturbance can accelerate the evolution process, and the spherical primary α phase formed easily under mechanical stirring treatment condition. The formati

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16

Seyboldt, Christoph, Mathias Liewald, and Daniel Heydt. "Production of Aluminium Based Interpenetrating Phase Composites Using Semi-Solid Forming." Key Engineering Materials 716 (October 2016): 502–9. http://dx.doi.org/10.4028/www.scientific.net/kem.716.502.

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The following paper deals with the production of Interpenetrating Phase Composites (IPC) using semi-solid forming technology. Therefore, adequate ceramic foams were selected and infiltrated by processing the aluminium alloy A356 in the semi-solid state. In the studies presented in this paper, the infiltrations of two ceramic materials (Al2O3 and SiC) with three different pore sizes (10, 20 and 30 ppi) were investigated. During the forming process the liquid phase fraction of the aluminium was varied to analyze infiltration effects in relation to the raw material´s liquid phase fraction. Afterw

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17

Jiang, Ruifen, Wei Lin, Lifang Zhang, Fang Zhu, and Gangfeng Ouyang. "Development of a novel solid phase microextraction calibration method for semi-solid tissue sampling." Science of The Total Environment 655 (March 2019): 174–80. http://dx.doi.org/10.1016/j.scitotenv.2018.11.226.

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18

Kang, Suk Won, Ki Bae Kim, Dock Young Lee, Jung-Hwa Mun, and Eui Pak Yoon. "Morphological Evolution of Primary Solid Phase in Semi-Solid Slurry during the Isothermal Holding." Materials Science Forum 510-511 (March 2006): 394–97. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.394.

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19

Kang, Suk Won, Dock Young Lee, and Ki Bae Kim. "Effect of Preheating Temperature of Multiplex-Type Slurry Cup on the Morphology of Primary Solid Phase of Semi-Solid Slurry." Solid State Phenomena 116-117 (October 2006): 332–35. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.332.

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Semi-solid slurry for a rheocasting process requires a fine and globular structure of primary solid phase. In the present study, in order to find an optimum preheating temperature of a multiplex-type slurry cup in the slurry maker that we recently developed for the rheocasting process, the semi-solid slurry was held for a various time of up to 60 min. in a multiplex-type slurry cup preheated at a different temperature. A size and morphology of primary solid phase of the semisolid slurry was measured and analyzed with the difference of the recorded cooling curve during the solidification with r

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20

Shakiba, M., and Hossein Aashuri. "Modeling of Semi-Solid A356 Alloy under Upsetting Process." Solid State Phenomena 116-117 (October 2006): 622–25. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.622.

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The flow behavior of a semi-solid A356 alloy at high solid fraction was studied. The mushy zone was considered as an effective two-phase, so that the solid continuum can be compressible porous media, and the liquid phase interaction with the solid skeleton was of Darcy type. The semi-solid flow through the upsetting test was modeled in ABAQUS finite element method software. The Gurson yield criterion has been developed for the modeling process of the flow behavior of solid porous medium. Specimens were globulized by a thermomechanical process and then were tested for various percentages of ups

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21

Curle, Ulyate Andries, and Jeremias D. Wilkins. "Semi-Solid Casting of Pure Magnesium." Solid State Phenomena 285 (January 2019): 464–69. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.464.

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Semi-solid processing works on the principal of a solidification temperature interval of a substance. The substance is heated to a temperature within this interval so that there exists a related solid-liquid fraction ratio. The substance with this phase structure is then shaped by a forging or casting process. It has been stated before that it is impossible to semi-solid process and cast pure metals or eutectic alloys due to their thermodynamic temperature invariance, meaning that there is no temperature interval. It was demonstrated recently that it is possible to semi-solid casting high puri

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22

Pineau, Frédéric, and Geneviève Simard. "Investigation of the Primary Phase Segregation during the Filling of an Industrial Mold with Semi-Solid A357 Aluminum." Solid State Phenomena 141-143 (July 2008): 635–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.635.

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Casting metal alloys in the semi-solid state is now becoming a well established manufacturing technique. But, the success of this technology necessitates a good understanding of the feedstock material behaviour. To obtain high quality components with semi-solid metal processing, a homogeneous distribution of phases must be maintained in the material during the die filling stage. Many parameters affect the process such as temperature, time and stress history, which influence the shape, size and connectivity of the particles that make up the slurry. The subsequent phase interaction mechanisms ar

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23

Hu, Yong Jun, Bin Qiang Zhong, Feng Li, et al. "Microstucture and Mechanical Properties of Semi-Solid Sn–58Bi Alloy." Key Engineering Materials 480-481 (June 2011): 687–90. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.687.

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Preparation of semi-solid Sn–58Bi alloys by mechanical stirring casting method was investigated. The effect of temperature below the melting temperature on the microstructures and mechanical properties of semi-solid Sn–58Bi alloys was discussed. The experimental results showed that long plate shape, block shape and suborbicular Sn phases were formed by mechanical agitation during the casting solidification process. The non-lamellar Sn-Bi Microstructure improves prominently the elongation of Sn-Bi alloy. The elongation of semi-solid Sn-Bi alloy with suborbicular Sn phase is enhanced up to 37% c

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24

Son, Yong Guk, Sung Soo Jung, Yong Ho Park, and Young Cheol Lee. "Effect of Semi-Solid Processing on the Microstructure and Mechanical Properties of Aluminum Alloy Chips with Eutectic Mg2Si Intermetallics." Metals 11, no. 9 (2021): 1414. http://dx.doi.org/10.3390/met11091414.

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This study reports the microstructural changes and mechanical properties of high-strength aluminum alloy chips prepared in the semi-solid state at different temperatures, pressures, and holding times. In semi-solid processes, these processing parameters must be optimized because they affect the microstructure and mechanical properties of the chips. In microstructural analysis, these parameters clearly influenced the spheroidization of the aluminum matrix. The aluminum matrix was uniformly spheroidized after semi-solid processing, and the densities of the final samples increased with the holdin

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25

Wu, Shu Sen, Xiao Gang Fang, Shu Lin Lü, Li Zhao, and Jing Wang. "Semi-Solid Processing and Properties of RE-Containing Mg Alloys." Solid State Phenomena 256 (September 2016): 75–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.75.

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The RE-containing Mg alloys usually have big RE-rich intermetallic compounds distributed along grain boundaries. In this paper, a 3 wt.% RE containing Mg alloy is processed by combination of semi-solid slurry-making with ultrasonic vibration (UV) and squeeze casting. Results show that good semi-solid slurry with fine and spherical primary α-Mg particles can be obtained due to the effects of the cavitation and acoustic streaming induced by UV, and the average particle size and average shape factor are about 30 μm and 0.70 respectively. The RE-rich intermetallic compounds are refined and uniform

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Zhang, Ying, Jin Hua Xu, Shui Sheng Xie, Mao Peng Geng, Hong Min Guo, and Hai Bo Zhao. "Effect of Annealing on Microstructure and Properties for Semi-Solid Magnesium Strips." Materials Science Forum 704-705 (December 2011): 581–85. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.581.

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The experiment of the roll-casting for semi-solid AZ91D magnesium was carried out on the equipment made by ourselves in our laboratory. Parameters of annealing process and the effect of annealing temperature on structure and hardness of semi-solid magnesium were investigated. It was shown that annealing process can improve the structure and properties of roll-casting strips for semi-solid magnesium. In addition, it can relieve the eutectic structure segregation and make β-Mg17Al12 phase precipitate from primary α-Mg grain, which can cause dispersion strengthening process when the annealing tem

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27

Wang, Yao, Yuanxing Li, Dengquan Han, Sifu Qiu, and Hui Chen. "Microstructure evolution and mechanical properties of 6N01S-T5 aluminum alloy joints with semi-solid solders by ultrasonic soldering." International Journal of Modern Physics B 33, no. 01n03 (2019): 1940027. http://dx.doi.org/10.1142/s0217979219400277.

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The article investigated the properties of 6N01 aluminum alloy joints with Sn-80Zn semi-solid solders by ultrasonic soldering. It was found that semi-solid solders consisted of Zn-rich phase with short rod-like dentrite, which had the lower solidus temperatures, while Zn-rich phase with long dentritic grains used the conventional solders. The joints soldered with Sn-80Zn conventional filler metal reached maximum shear strength of 73 MPa at the soldering temperature of 390[Formula: see text]C. The joint using Sn-80Zn semi-solid solder obtained higher shear strength of 90 MPa at the lower temper

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28

Kang, Suk Won, Dock Young Lee, and Ki Bae Kim. "Optimization of Manufacturing Conditions of Semi-Solid Slurry in Multiplex-Type Slurry Cup." Solid State Phenomena 116-117 (October 2006): 243–46. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.243.

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Recently, we have developed a slurry maker using a multiplex-type slurry cup for rheoforming process. In the present study, the optimum manufacturing condition of semi-solid slurry having a fine and globular structure of primary solid phase was investigated in the multiplextype slurry cup. A various manufacturing condition, such as a pouring temperature of melt, a preheating temperature of slurry cup, and a holding temperature and time of melt in slurry cup was varied to make a processing map of the semi-solid slurry for rheoforming process. Through the microstructural examination of primary s

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29

Yi, Rong Xi, Shi Kun Xie, Xiao Qiu Zheng, and Yong Ping Ai. "Effect of RE on Performance of Semi-Solid AlSi7 Alloy." Key Engineering Materials 426-427 (January 2010): 581–84. http://dx.doi.org/10.4028/www.scientific.net/kem.426-427.581.

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The semi-solid slurry of AlSi7 alloy was prepared by near-liquids cast processing. The effects of different content of RE on the cast performance and the semi-solid remelting performance in AlSi7 alloy was researched. The results indicated that adding RE will widen the AlSi7 alloy solid-liquid two-phase zone temperature and refine the grains, silicon will obvious metamorphoses. The best amount of RE is about 0.5%. Its semi-solid remelting organization is equilateral globular grains.

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30

Guo, Hong Min, Le Rong Bai, Bin Liu, and Xiang Jie Yang. "Ti-Zr-V-Cu-Be BMGMCs Processed by Semi-Solid Processing." Solid State Phenomena 285 (January 2019): 111–14. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.111.

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Compared with monolithic bulk-metallic glasses at room temperature, in-situ two-phase bulk metallic glass matrix composites (BMGMCs) exhibit improved toughness. However, most of in-situ BMGMCs are developed through extremely rapid cooling, during which the solidification process cannot be controlled effectively. As a consequence, the microstructures of in situ two-phase composites, even with the same composition, vary from one to another, highly depend on the cooling rate. In the present investigation, the Ti-Zr-V-Cu-Be BMGMCs was prepared by using copper mould suction process, and the evoluti

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31

Hallstedt, B. "Use of Calphad Thermodynamics to Simulate Phase Formation during Semi-Solid Processing." Solid State Phenomena 141-143 (July 2008): 641–46. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.641.

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In this work we will explore the use of thermochemical simulation methods (Calphad) to support alloy selection and processing in the semi-solid state. Semi-solid processing has been investigated extensively for aluminium alloys, in particular A356, but there is also an increasing interest in using semi-solid processing for steels, in particular high carbon steels. A key property for the semi-solid processing is the fraction of liquid phase as function of temperature. It is necessary to know the fraction of liquid phase in order to be able to control the process and in order to simulate the vis

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32

Kuwahara, Takashi, Taro Osaka, Mizuki Saito, and Shinsuke Suzuki. "Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route." Metals 9, no. 2 (2019): 153. http://dx.doi.org/10.3390/met9020153.

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A2024 alloy foams were fabricated by two methods. In the first method, the melt was thickened by Mg, which acts as an alloying element (melt route). In the second method, the melt was thickened by using primary crystals at a semi-solid temperature with a solid fraction of 20% (semi-solid route). A2024 alloy foams fabricated through the semi-solid route had coarse and uneven pores. This led to slightly brittle fracture of the foams, which resulted in larger energy absorption efficiency than that of the foams fabricated through the melt route. Moreover, A2024 alloy foams fabricated through the s

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33

Khunbanterng, Nisachon, Sirikul Wisutmethangoon, Thawatchai Plookphol, and Jessada Wannasin. "Effect of Sr Addition on Microstructure and Mechanical Properties of Semi-Solid 2024 Al Alloys." Applied Mechanics and Materials 496-500 (January 2014): 336–39. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.336.

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Semi-solid 2024 Al alloys with strontium (Sr) addition of 0.15 wt% and 0.3 wt% were prepared by Gas Induced Semi-Solid (GISS) process. Effect of Sr addition on the microstructure and mechanical properties of the semi-solid 2024 alloy was investigated. It was found that the tensile strength and % elongation of the T6 heat treated alloy with the Sr addition were higher than those without Sr addition owing to the reduction of Mg2Si phase formation. The semi-solid 2024 Al alloy with 0.15%Sr addition obtained the average highest tensile strength of 382 MPa and elongation of 6.45%.

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34

Suéry, Michel, Luc Salvo, Charles Josserond, and Marco Di Michiel. "In-Situ 3D Investigation by Fast X-Ray Microtomography of the Microstructural Changes Occurring during Partial Remelting of Al-Cu Alloys." Solid State Phenomena 116-117 (October 2006): 231–34. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.231.

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The evolution of the microstructure of semi-solid Al-Cu alloys has been characterized during isothermal treatments in the semi-solid state by using in-situ X-ray microtomography experiments carried out at ESRF, Grenoble. This work is therefore a continuation of previous experiments reported at the 8th S2P Conference in Limassol. Quantitative data are presented dealing with changes with holding time of the solid volume fraction, of the solid-liquid interface area and of the mean and Gaussian curvatures of the solid phase. Discussion of the results is carried out on the basis of the mechanisms i

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35

Jabbari, Amin, Seyedali Ali Sadough, and Vahid Pouyafar. "Rotational Rheology of A356 Semi-Solid Alloy at Low Solid Fractions." Advanced Materials Research 1019 (October 2014): 74–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1019.74.

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The main goal of investigations on semi-solid metal processing is to produce complex parts with enhanced mechanical properties. Flow behavior and die filling in semi-solid processing is an intrest area of researchers. A comprehensive understanding of the behavior of the under investigation metallic slurry is the design key of a successful manufacturing process. In this way the material’s transient response is very important for understanding of the rheological properties and also further commercial development of the process. The material used in this research is an Al-Si alloy which is widely

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36

Qu, Wen Ying, Da Quan Li, Zhi Peng Guo, et al. "Using the Phase Field Method to Investigate Microstructural Evolution of Semi-Solid 357.0 Slurries." Solid State Phenomena 285 (January 2019): 367–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.367.

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Semi-solid aluminum slurries have globular grains, different from traditional dendritic solidification microstructures. The mechanism responsible for the formation of these globular grains is still in dispute. Some researchers suggest that the globular grains are formed by fractured dendrites, while others report it is due to copious nucleation. This study will model the growth of the α-Al phase during the production of semi-solid slurries using the swirled equilibrium enthalpy device (SEED) process, where liquid alloy with a low superheat is poured into a steel crucible and swirled within the

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37

Li, Jiqiang, Lei Zhang, Xuan Pu Dong, Wen Liu, and Zhao Zhang. "Study on Microstructure of Semi-Solid Magnesium Alloy Manufactured by Gas Bubbles Stirring." Advanced Materials Research 129-131 (August 2010): 728–32. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.728.

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The semi-solid slurry of AZ31 magnesium alloy was manufactured by gas bubbles stirring. The effects of stirring temperature and stirring time on the microstructure of semi-solid slurry were researched. The results indicate that it is feasible to manufacture the slurry with particle-like primary phases. When the stirring temperature is higher, the morphology of the primary a-Mg presents rosette-like morphology and the size of grain is coarse, and the morphology mainly was α- Mg dendrite at lower stirring temperature. Long stirring time could reduce dendrites and liquid phase, and made the non-d

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38

Kim, Jeong Min, Bong Koo Park, Joong Hwan Jun, Ki Tae Kim, and Woon Jae Jung. "Microstructure and Mechanical Properties of Cast and Semi-Solid Formed Mg-Al-Zn Alloys." Solid State Phenomena 116-117 (October 2006): 288–91. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.288.

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Various Mg-Al-Zn alloys with different Al and Zn contents were fabricated by conventional casting and semi-solid forming process. And the microstructure and mechanical properties of the alloys were investigated. In Mg-4%Al-(5~7)%Zn alloys most of the grain boundary phases were found to be Mg-Al-Zn while in Mg-6%Al or Mg-8%Al based alloys the Mg- Al-Zn phase coexisted with Mg17Al12 at grain boundaries. At room temperature the semi-solid formed alloys showed significantly higher tensile properties, especially elongation, than the conventionally cast alloys.

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Lyapunov, N. A., E. P. Bezuglaya, A. N. Lyapunov, I. A. Zinchenko, K. Yu Bryleva, and A. A. Lysokobilka. "LABORATORY EQUIPMENT DURING PHARMACEUTICAL DEVELOPMENT OF SEMI-SOLID PREPARATIONS." Drug development & registration 8, no. 1 (2019): 29–36. http://dx.doi.org/10.33380/2305-2066-2019-8-1-29-36.

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Introduction. When developing drugs it is necessary to use laboratory equipment that simulates pilot and industrial equipment. For the production of semi-solid preparations the key equipment are rotor-stator dispersers and vacuum reactors-homogenizers. Aim. Investigation of the functional characteristics of laboratory equipment: Megatron® MT 1-50 dispersant SHS F/2 (Kinematica AG, Switzerland) and the RP-5 vacuum homogenizer reactor (Promvit, Ukraine). Materials and methods. During development a generic product Penciclovir cream 1% the initial particle size in suspension of penciclovir and par

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Behúlová, Mária, David Aišman, Hana Jirková, and Bohuslav Mašek. "Experimental and Numerical Investigation of the Steel X210Cr12 Forming in Semi-Solid State." Advanced Materials Research 214 (February 2011): 461–66. http://dx.doi.org/10.4028/www.scientific.net/amr.214.461.

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Semi-solid forming processes belong to the progressive technologies which can be exploited for the manufacturing products with complicated shapes and special material and utility properties. Semi-solid metal forming takes place at temperatures between solidus and liquidus combining the advantages of metal forging and metal casting processes. The paper is focused on the analysis of microstructures and phase composition of the X210Cr12 steel identified in the thin-walled products after forming in semi-solid state. Microstructure of the X210Cr12 steel after rapid cooling and solidification from s

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Zhao, Yong Qing, Xue Dan Ma, Wei Lu Wu, Liang Feng, Hai Ying Yang, and Lanlan Yu. "Research on Semi-Solid Oxidation Behavior of Ti14 Alloy." Materials Science Forum 475-479 (January 2005): 569–72. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.569.

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The semi-solid oxidation behavior of Ti14 alloy was researched. The results show that the weigh gain increases obviously with the increasing of the semi-solid oxidation temperature. After semi-solid oxidation, the oxidation scales are only TiO2 and there are not any oxides of Cu. That is the result of the evaporation of CuO. The evaporation of CuO, which is over 1050°C, makes the weight grain happen to decrease. The oxidation layer consists of five regions. Because of the existence of the low-melting-point-phase (Ti2Cu), the melting grain boundaries become the preference walkway for the oxygen

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Govender, Gonasagren, Heinrich Möller, and Ulyate Andries Curle. "Alloy Design for Semi Solid Metal Forming." Materials Science Forum 783-786 (May 2014): 136–41. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.136.

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Semi-solid metal forming is more than 40 years old but its full potential to near net shape form high strength aluminium alloys has been realised only to a limited degree. Alloys developed for traditional manufacturing processes were initially used but it became apparent that alloys specific to SSM forming needed to be developed. The main alloy development criteria revolved around SSM processing temperature, solid fraction (fs) versus temperature sensitivity and age hardening potential. This methodology while sound does not fully address the unique processing behaviour of SSM forming. By its v

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Knauf, Frederik, I. Seidl, and Gerhard Hirt. "Rheoforging of Steel." Solid State Phenomena 116-117 (October 2006): 464–67. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.464.

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Rheoforging is a modification of semi-solid forging starting directly from the liquid phase instead of reheating of a billet. In this process semi-solid slurry is prepared by pouring slightly overheated melt over a slope into a holding cup to induce homogenous nucleation. By controlling the casting temperature and holding time in the cup the desired semi-solid slurry with fine, globular microstructure is successfully created. The inline forging trials using this slurry show the principal feasibility of the process.

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Kim, Jeong Min, Gun Ha Lee, Joong Hwan Jun, Ki Tae Kim, and Woon Jae Jung. "Development of Heat Resistant Mg-Al-Ca Based Alloys for Casting and Semi-Solid Forming." Solid State Phenomena 116-117 (October 2006): 68–71. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.68.

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Mg-8%Al-1%Ca was selected as a base alloy composition and small amounts of minor alloying elements, RE or Sr, were added. Microstructure of as-cast Mg-8%Al-1%Ca base alloys consists of dendritic primary Mg, Mg-Al-Ca and Mg17Al12 phases. Mg-Al-RE-(Ca) phase in the RE-added alloys and Mg-Al-Sr-(Ca) phase in the Sr-added alloys were additionally found. The creep resistance of Mg-8%Al based alloy was significantly improved by the minor alloying elements additions with 1%Ca. Comparatively globular primary phase could be obtained after just 30min. through an isothermal heating of as-cast Mg-Al-Ca al

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Schomer, Laura, Christoph Seyboldt, and Mathias Liewald. "Semi-Solid Metal Forming - A Process for Manufacturing Composite and Hybrid Materials." Defect and Diffusion Forum 381 (November 2017): 47–51. http://dx.doi.org/10.4028/www.scientific.net/ddf.381.47.

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The following paper deals with the manufacturing of composite and hybrid materials by using semi-solid forming technologies. On the one hand, there is presented a process for producing Interpenetrating Phase Composites (IPC) consisting of ceramic open-cell structures which are infiltrated by a semi-solid aluminium alloy. On the other hand, a new process for manufacturing hybrid metallic materials is described. Thereby, semi-finished materials made of two different aluminium alloys are simultaneously heated using an induction system and subsequently formed in the semi-solid state. The paper sho

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Liu, Zheng, Xiao Mei Liu, and Wei Min Mao. "Semi-Solid A356 Alloy Slurry Prepared by Slightly Electromagnetic Stirring with Ti-Based Refiner." Advanced Materials Research 152-153 (October 2010): 1745–50. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1745.

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The semi-solid A356 alloy slurry is prepared by slightly electromagnetic stirring with Ti-based refiner. The effects of the refiner on the morphology and the grain size of the primary phase in the slurry are researched. The results indicate that the slurry with particle-like and rosette-like primary phases can be prepared by slightly electromagnetic stirring with the refiner. Compared with the A356 alloys without the refiner, the grain size and particle morphology of primary phase as well as the distribution of the grain with particle-like or rosette-like along radial in the ingot in A356 are

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Li, Long Fei, Da Quan Li, Min Luo, et al. "Influence of Rare Earth Additions on the Microstructure and Mechanical Properties of Al7Si0.3Mg Alloys Processed by Semi-Solid Die Casting and Gravity Die Casting." Solid State Phenomena 285 (January 2019): 69–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.69.

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Microstructures with fine globular grains and refined eutectic structures are important to enhance the mechanical properties of A356 alloys processed by semi-solid and gravity die casting. Rare earth (RE) additions have been shown to be capable of refining both the α-Al particles as well as modify the eutectic phase of alloys. In semi-solid die casting, Al7Si0.3Mg alloys with RE concentrations (0, 0.1 and 0.4 wt.%) were used to prepare semi-solid slurries using the SEED (Swirling Enthalpy Equilibrium Device) method, and subsequently semi-solid die cast. The same compositions of alloys were als

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Traidi, Khalil, Véronique Favier, Philippe Lestriez, Karl Debray, Laurent Langlois, and Tudor Balan. "Modelling Semi-Solid Behaviour and Brittle Temperature Range." Solid State Phenomena 285 (January 2019): 361–66. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.361.

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In this paper, a new elastic viscoplastic micromechanical modelling is proposed to represent the semi-solid behaviour and predict the ductile-brittle transition of the C38LTT near the solidus. It is based on a viscoplastic modelling previously presented in [1]. The originality of the new model comes from three main enhancements: the transition between the solid state and the semi-solid state was included meaning that the material properties were taken temperature-dependent, the elastic properties was taken into account similarly as [2] and the evolution of the internal variable describing the

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Han, Hong Jing, Yan Guang Chen, Hong Qi Wang, et al. "Investigation of Iodine Distribution in the Semi-Hydrate Wet Phosphoric Acid Process." Advanced Materials Research 807-809 (September 2013): 1347–50. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.1347.

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The influencing factors of reaction such as reaction temperature, reaction time and the ratio of liquid to solid are investigated by analyzing the iodine distribution in the semi-hydrate wet process of phosphoric acid. The result shows that with the increase of reaction temperature, reaction time and the ratio of liquid to solid, the iodine distribution in the phases of liquid and solid presents has the tendency of decrease, in the range between 20% and 30%, while the iodine distribution in the gas phase tends to increase, the maximum value is 67.54%.

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Wang, Jia Xuan, Chun Li, Li Hong Jiang, and Min Fang. "Influence of Ultrasonic Vibration on Preparation for Semi-Solid A356 Alloy." Advanced Materials Research 295-297 (July 2011): 1465–69. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1465.

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In this paper, semi-solid slurry was prepared by power ultrasonic on flowing A356 melts. A simple device of ultrasonic treatment was made and the method of applying power ultrasound from the top of ingot was adopted. we investigated the influence of the experimental parameters impact on the size and morphology of the primary phase α-Al in A356 slurry, which included the power of the power ultrasound, treatment temperature and the distance between ultrasonic source and the melts ( here refer to from vibration head to the bottom of melt channel in this paper). The regularity of ultrasonic influe

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