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Az91 Alloy

The Experts below are selected from a list of 2499 Experts worldwide ranked by ideXlab platform

Toshiji Mukai – 1st expert on this subject based on the ideXlab platform

  • microstructure and mechanical properties of Az91 Alloy produced with ultrasonic vibration
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of the Az91 magnesium Alloy. The coarse dendrite microstructure solidified in the Az91 Alloy without any ultrasonic vibration. However, the microstructure with fine uniform non-dendrite grains was achieved with ultrasonic vibration. According to the analysis of refinement mechanism, it indicated that due to the acoustic cavitation and flows induced by ultrasonic vibration, the most of insoluble impurity particles become active as nucleation centers and the temperature gradient near the solidification front increases, which led to the fine uniform microstructure. Besides, the Az91 Alloy produced with ultrasonic vibration exhibited the improved mechanical properties at room temperature, such as compressive yield strength (94 MPa), ultimate compressive strength (376 MPa) and fracture strain (22.0%).

  • grain refinement of Az91 Alloy by introducing ultrasonic vibration during solidification
    Materials Letters, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of Az91 Alloy. Various microstructures were produced in this Alloy using ultrasonic vibrations at different temperatures of the melt. The coarse dendrite microstructures were obtained with ultrasonic vibrations at temperatures below the liquidus temperature. The fine uniform grains were achieved under ultrasonic vibrations during the nucleation stage, which was mainly attributed to the cavitation and the acoustic flow induced by the ultrasonic vibration.

  • Casting Surface of Az91 Alloy and Its Reaction with Sand Mold
    Materials Transactions, 2008
    Co-Authors: Susumu Takamori, Yoshiaki Osawa, Takashi Kimura, Toshiji Mukai

    Abstract:

    Due to its light weight and abundance as a resource, the utilization of magnesium is increasing. Az91 Alloy is the most common cast magnesium Alloy and is widely used as die-casting material. Az91 is also used for sand mold casting. In sand mold casting, reaction with mold sand is expected because magnesium is a very reactive element. This study investigated the surface condition of Az91 castings using sand mold. Higher pouring temperature promoted the reaction with silica sand, and the surface of castings became rough. Reacting with mold sand, Mg 2 Si and Mg and Al complex oxides were precipitated near the casting surface.

Yoshiaki Osawa – 2nd expert on this subject based on the ideXlab platform

  • microstructure and mechanical properties of Az91 Alloy produced with ultrasonic vibration
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of the Az91 magnesium Alloy. The coarse dendrite microstructure solidified in the Az91 Alloy without any ultrasonic vibration. However, the microstructure with fine uniform non-dendrite grains was achieved with ultrasonic vibration. According to the analysis of refinement mechanism, it indicated that due to the acoustic cavitation and flows induced by ultrasonic vibration, the most of insoluble impurity particles become active as nucleation centers and the temperature gradient near the solidification front increases, which led to the fine uniform microstructure. Besides, the Az91 Alloy produced with ultrasonic vibration exhibited the improved mechanical properties at room temperature, such as compressive yield strength (94 MPa), ultimate compressive strength (376 MPa) and fracture strain (22.0%).

  • grain refinement of Az91 Alloy by introducing ultrasonic vibration during solidification
    Materials Letters, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of Az91 Alloy. Various microstructures were produced in this Alloy using ultrasonic vibrations at different temperatures of the melt. The coarse dendrite microstructures were obtained with ultrasonic vibrations at temperatures below the liquidus temperature. The fine uniform grains were achieved under ultrasonic vibrations during the nucleation stage, which was mainly attributed to the cavitation and the acoustic flow induced by the ultrasonic vibration.

  • Casting Surface of Az91 Alloy and Its Reaction with Sand Mold
    Materials Transactions, 2008
    Co-Authors: Susumu Takamori, Yoshiaki Osawa, Takashi Kimura, Toshiji Mukai

    Abstract:

    Due to its light weight and abundance as a resource, the utilization of magnesium is increasing. Az91 Alloy is the most common cast magnesium Alloy and is widely used as die-casting material. Az91 is also used for sand mold casting. In sand mold casting, reaction with mold sand is expected because magnesium is a very reactive element. This study investigated the surface condition of Az91 castings using sand mold. Higher pouring temperature promoted the reaction with silica sand, and the surface of castings became rough. Reacting with mold sand, Mg 2 Si and Mg and Al complex oxides were precipitated near the casting surface.

Susumu Takamori – 3rd expert on this subject based on the ideXlab platform

  • microstructure and mechanical properties of Az91 Alloy produced with ultrasonic vibration
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of the Az91 magnesium Alloy. The coarse dendrite microstructure solidified in the Az91 Alloy without any ultrasonic vibration. However, the microstructure with fine uniform non-dendrite grains was achieved with ultrasonic vibration. According to the analysis of refinement mechanism, it indicated that due to the acoustic cavitation and flows induced by ultrasonic vibration, the most of insoluble impurity particles become active as nucleation centers and the temperature gradient near the solidification front increases, which led to the fine uniform microstructure. Besides, the Az91 Alloy produced with ultrasonic vibration exhibited the improved mechanical properties at room temperature, such as compressive yield strength (94 MPa), ultimate compressive strength (376 MPa) and fracture strain (22.0%).

  • grain refinement of Az91 Alloy by introducing ultrasonic vibration during solidification
    Materials Letters, 2008
    Co-Authors: Yoshiaki Osawa, Susumu Takamori, Toshiji Mukai

    Abstract:

    Ultrasonic vibration was introduced into the solidification of Az91 Alloy. Various microstructures were produced in this Alloy using ultrasonic vibrations at different temperatures of the melt. The coarse dendrite microstructures were obtained with ultrasonic vibrations at temperatures below the liquidus temperature. The fine uniform grains were achieved under ultrasonic vibrations during the nucleation stage, which was mainly attributed to the cavitation and the acoustic flow induced by the ultrasonic vibration.

  • Casting Surface of Az91 Alloy and Its Reaction with Sand Mold
    Materials Transactions, 2008
    Co-Authors: Susumu Takamori, Yoshiaki Osawa, Takashi Kimura, Toshiji Mukai

    Abstract:

    Due to its light weight and abundance as a resource, the utilization of magnesium is increasing. Az91 Alloy is the most common cast magnesium Alloy and is widely used as die-casting material. Az91 is also used for sand mold casting. In sand mold casting, reaction with mold sand is expected because magnesium is a very reactive element. This study investigated the surface condition of Az91 castings using sand mold. Higher pouring temperature promoted the reaction with silica sand, and the surface of castings became rough. Reacting with mold sand, Mg 2 Si and Mg and Al complex oxides were precipitated near the casting surface.