The Experts below are selected from a list of 1077 Experts worldwide ranked by ideXlab platform

Xiao Ting Xiao - One of the best experts on this subject based on the ideXlab platform.

  • Microstucture and Mechanical Properties of Semi-Solid Sn–58Bi Alloy
    Key Engineering Materials, 2011
    Co-Authors: Bin Qiang Zhong, Xiao Ling Cheng, Xiao Ting Xiao, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    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% compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting. After the agigation above 130 °C, non-lamellar Sn-Bi eutectic structure is formed and lamellar Sn-Bi eutectic precipitates. When the agitating temperature was 135 °C, the elongation of semi-solid Sn-Bi alloy mixed with non-lamellar and lamellar Sn-Bi alloy microstructure is enhanced up to 24%.

  • The Influence of Stirring Time on Mechanical Properties of Sn–58Bi Alloy Treated in the Semi-Solid State by Mechanical Stirring Process
    Key Engineering Materials, 2011
    Co-Authors: Xiao Ling Cheng, Xiao Ting Xiao, Bin Qiang Zhong, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    In this paper, the technology of semi-solid Casting was to used are produced Sn-Bi alloy. The influence of agitating time at 125 °C on the microstructure and mechanical properties of of Sn-58Bi Casting alloy were discussed. The eutectic Sn-Bi alloy was mechanically agitated during the Casting solidification process. The results indicated that non-lamellar Sn-Bi structure with long plate shape, short strip, small size block and suborbicular block shape Sn phase was obtained for different stirring time. The elongation of Sn-Bi alloy with non-lamellar eutectic structure is improved prominently. Compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting, the elongation of semi-solid Sn-Bi alloy with suborbicular block shape Sn phase is enhanced up to 45%.

  • Microstructure and Mechanical Properties of Sn-Bi Alloy Treated in the Semi-Solid State by Mechanical Stirring Process
    Advanced Materials Research, 2010
    Co-Authors: Xiao Ling Cheng, Xiao Ting Xiao
    Abstract:

    In this work, the effect of stirring time on the solidifed microstructures and mechanical properties of semi-solid Sn-Bi slurry was investigated by the mechanical stirring method. The results indicated that a fine round granular solidifed structure of Sn-Bi semi-solid slurry was obtained at 142 and stirred for 8 min. Compared with the Sn-Bi alloy prepared Conventional Die Casting, the mechamical properties of semi-solid Sn-Bi alloy was improved prominently. The percentage elongation of semi-solid Sn-Bi alloy was increased 67 % compared with that of the Sn-Bi alloy prepared Conventional Die Casting.

Yu Chuan Zheng - One of the best experts on this subject based on the ideXlab platform.

  • The Influence of Stirring Time on Mechanical Properties of Sn–58Bi Alloy Treated in the Semi-Solid State by Mechanical Stirring Process
    Key Engineering Materials, 2011
    Co-Authors: Xiao Ling Cheng, Xiao Ting Xiao, Bin Qiang Zhong, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    In this paper, the technology of semi-solid Casting was to used are produced Sn-Bi alloy. The influence of agitating time at 125 °C on the microstructure and mechanical properties of of Sn-58Bi Casting alloy were discussed. The eutectic Sn-Bi alloy was mechanically agitated during the Casting solidification process. The results indicated that non-lamellar Sn-Bi structure with long plate shape, short strip, small size block and suborbicular block shape Sn phase was obtained for different stirring time. The elongation of Sn-Bi alloy with non-lamellar eutectic structure is improved prominently. Compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting, the elongation of semi-solid Sn-Bi alloy with suborbicular block shape Sn phase is enhanced up to 45%.

  • Microstucture and Mechanical Properties of Semi-Solid Sn–58Bi Alloy
    Key Engineering Materials, 2011
    Co-Authors: Bin Qiang Zhong, Xiao Ling Cheng, Xiao Ting Xiao, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    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% compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting. After the agigation above 130 °C, non-lamellar Sn-Bi eutectic structure is formed and lamellar Sn-Bi eutectic precipitates. When the agitating temperature was 135 °C, the elongation of semi-solid Sn-Bi alloy mixed with non-lamellar and lamellar Sn-Bi alloy microstructure is enhanced up to 24%.

Xiao Ling Cheng - One of the best experts on this subject based on the ideXlab platform.

  • Microstucture and Mechanical Properties of Semi-Solid Sn–58Bi Alloy
    Key Engineering Materials, 2011
    Co-Authors: Bin Qiang Zhong, Xiao Ling Cheng, Xiao Ting Xiao, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    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% compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting. After the agigation above 130 °C, non-lamellar Sn-Bi eutectic structure is formed and lamellar Sn-Bi eutectic precipitates. When the agitating temperature was 135 °C, the elongation of semi-solid Sn-Bi alloy mixed with non-lamellar and lamellar Sn-Bi alloy microstructure is enhanced up to 24%.

  • The Influence of Stirring Time on Mechanical Properties of Sn–58Bi Alloy Treated in the Semi-Solid State by Mechanical Stirring Process
    Key Engineering Materials, 2011
    Co-Authors: Xiao Ling Cheng, Xiao Ting Xiao, Bin Qiang Zhong, Chun Chun Zheng, Yu Chuan Zheng
    Abstract:

    In this paper, the technology of semi-solid Casting was to used are produced Sn-Bi alloy. The influence of agitating time at 125 °C on the microstructure and mechanical properties of of Sn-58Bi Casting alloy were discussed. The eutectic Sn-Bi alloy was mechanically agitated during the Casting solidification process. The results indicated that non-lamellar Sn-Bi structure with long plate shape, short strip, small size block and suborbicular block shape Sn phase was obtained for different stirring time. The elongation of Sn-Bi alloy with non-lamellar eutectic structure is improved prominently. Compared with the elongation of lamellar eutectic Sn-Bi alloy prepared by Conventional Die Casting, the elongation of semi-solid Sn-Bi alloy with suborbicular block shape Sn phase is enhanced up to 45%.

  • Microstructure and Mechanical Properties of Sn-Bi Alloy Treated in the Semi-Solid State by Mechanical Stirring Process
    Advanced Materials Research, 2010
    Co-Authors: Xiao Ling Cheng, Xiao Ting Xiao
    Abstract:

    In this work, the effect of stirring time on the solidifed microstructures and mechanical properties of semi-solid Sn-Bi slurry was investigated by the mechanical stirring method. The results indicated that a fine round granular solidifed structure of Sn-Bi semi-solid slurry was obtained at 142 and stirred for 8 min. Compared with the Sn-Bi alloy prepared Conventional Die Casting, the mechamical properties of semi-solid Sn-Bi alloy was improved prominently. The percentage elongation of semi-solid Sn-Bi alloy was increased 67 % compared with that of the Sn-Bi alloy prepared Conventional Die Casting.

Chung-gil Kang - One of the best experts on this subject based on the ideXlab platform.

  • An investigation of flow characteristics considering the effect of viscosity variation in the thixoforming process
    Journal of Materials Processing Technology, 2000
    Co-Authors: Nam-kyung Kim, Chung-gil Kang
    Abstract:

    Abstract The semi-solid forming process (thixoforming, rheoCasting) is a novel forming process that has some advantages compared to Conventional Die Casting, squeeze Casting and hot/cold forging. In this study, the thixoforming process was selected for analysis in terms of billet handling and ease of the automation process. The thixoforming process consists of a re-heating process of the billet, billet handling, filling into the Die cavity and solidification of the SSM part. In the filling process, two rheological models, i.e., a Newtonian and a non-Newtonian model (Ostwald–deWaele), were verified with experimental results. The Ostwald–deWaele model shows good agreement to the real flow and the filling phenomena in the Die cavity. To give a boost to the economical efficiency of the thixoforming process and to ensure good forming results, a re-heating device coupled to Die set was proposed and the initial billet temperature for the system was found by experimental results. This study presents an over-view of the application of numerical analysis for the simulation of a semi-solid metal forming process to reduce the lead time for the development of a manufacturing part in the industry field.

Albin Baby - One of the best experts on this subject based on the ideXlab platform.

  • The study on the influence of Si addition on the microstructure and hardness Al-Si alloys
    International Journal of Research, 2018
    Co-Authors: Srinivasa C S, Prasada Panikker S M, Akshai Baby, Sonu Jose, Albin Baby
    Abstract:

    Alloys composed mostly of aluminum have been very important in aerospace manufacturing since the introduction of metal skinned aircraft. Silicon is good in metallic alloys used for Casting. This is because it increases the fluidity of the melt, reduces the melting temperature, decreases the contraction associated with solidification and is very cheap as a raw material. Silicon also has a low density (2.34 g cm -3 ), which may be an advantage in reducing the overall weight of the cast component. Silicon is hard and hence improves the abrasion resistance. The aluminum silicon alloy is prepared by Conventional Die-Casting method with approximately 7.5wt%,12.5wt% & 17.5wt% Si. In this study, the influence of silicon addition on the microstructure and hardness of Al–Si has been investigated. This project gives a comparison of microstructure property between hypoeutectic, eutectic and hyper eutectic aluminum silicon alloy. The increase in silicon content results in an increase in the hardness of the Al-Si alloys.