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Journal of Materials Science | 1993

Formation, thermal stability and mechanical properties of amorphous alloys in the Mg-transition metal(Ni, Cu)-alkaline-earth metal(Ca, Sr, Ba) system

Toshisuke Shibata; Akihisa Inoue; Tsuyoshi Masumoto

Mg-Ni-Ca, Mg-Ni-Sr, Mg-Ni-Ba and Mg-Cu-Ca alloys were found to be amorphized by melt-spinning in the compositional ranges 0 to 30% Ni and O to 40% Ca, 5 to 20% Ni and 0 to 15% Sr, 10 to 25% Ni and 0 to 15% Ba, and 0 to 50% Cu and 0 to 35% Ca, respectively. In the amorphous Mg-Ni-Ca and Mg-Cu-Ca alloys, the glass transition was observed in the ranges of 7.5 to 15% Ni and 2.5 to 5% Ca and 10 to 40% Cu and 2.5 to 7.5% Ca, respectively. The crystallization temperature (Tx) of amorphous Mg-Cu-Ca alloys increases with increasing Cu content, while Tx for amorphous Mg-Ni-Ca and Mg-Ni-Sr alloys shows a maximum value of 459 and 471 K, respectively, at 15% Ni. The glass transition temperature (Tg) increases monotonously with increasing Ni or Cu content. Amorphous Mg-Ni-Ca and Mg-Ni-Sr ribbons containing more than 80% Mg have a good bending ductility and the highest tensile fracture strength (σf) reaches 690 and 680 MPa, respectively. The ratios of σf to density are nearly equal to those for previously reported Mg-Ni-(Y or Ln) amorphous alloys with higher σf values because of the low densities of the present Mg-based alloys.


Archive | 1992

Forming process of amorphous alloy material

Tsuyoshi Masumoto; Akihisa Inoue; Nobuyuki Nishiyama; Hiroyuki Horimura; Toshisuke Shibata


Archive | 1992

Amorphous magnesium alloy and method for producing the same

Hitoshi Yamaguchi; Toshisuke Shibata; Akihisa Inoue; Akira Kato; Tsuyoshi Masumoto


Archive | 1991

Magnesium alloy material having high strength and high toughness and its production

Akihisa Inoue; Takeshi Masumoto; Nobuyuki Nishiyama; Satoshi Sato; Toshisuke Shibata; 明久 井上; 智 佐藤; 健 増本; 利介 柴田; 信行 西山


Archive | 1991

High strength amorphous magnesium alloy and its manufacture

Akihisa Inoue; Akira Kato; Takeshi Masumoto; Nobuyuki Nishiyama; Toshisuke Shibata; 明久 井上; 晃 加藤; 健 増本; 利介 柴田; 信行 西山


Archive | 1992

Sacrificial electrode material for corrosion prevention

Tsuyoshi Masumoto; Akihisa Inoue; Takashi Sakuma; Toshisuke Shibata


Archive | 1992

Translucent ceramics and its production

Akihisa Inoue; Takeshi Masumoto; Nobuyuki Nishiyama; Toshisuke Shibata; 明久 井上; 健 増本; 利介 柴田; 信行 西山


Archive | 1993

Amorphous alloy material and process for production thereof

Tsuyoshi Masumoto; Akihisa Inoue; Junichi Nagahora; Toshisuke Shibata


Archive | 1992

Verfahren zur Formgebung von amorphen metallischen Werkstoffen

Tsuyoshi Masumoto; Akihisa Inoue; Nobuyuki Nishiyama; Hiroyuki Horimura; Toshisuke Shibata


Archive | 1992

Amorphe Legierung auf Magnesiumbasis und Verfahren zur Herstellung dieser Legierung

Tsuyoshi Masumoto; Hitoshi Yamaguchi; Toshisuke Shibata; Akihisa Inoue; Akira Kato

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