Japan Develops New Technologies to Enable Metal Materials with High Strength and High Toughness

The strength and toughness of metal materials have always been "can not have both fish and bear's paw", the Japanese researchers have recently developed a new metal material production technology that allows metal materials with high strength and high toughness, is expected to improve medical care And the application of metal materials in many fields such as aviation.

For example, in many fields such as medical and aerospace, micro medical devices and satellites require higher-quality metallic materials, which are required to satisfy both strength and toughness, because various parts and devices are to be made smaller and lighter. . And usually the strength and toughness of metal materials do not have the same effect.

Researchers at Ritsumeikan University invented a production method called “Concording Organization Control Method”. Compared with the usual powder metallurgy method of metal materials, the difference lies in the super-processing of raw powder powder surface using nanotechnology. . The formation of fine crystalline particles around the coarse crystal grains on the surface of the metal powder gives it an unusual crystalline structure that subverts common sense. Since the fine crystal grains exert high strength, the coarse crystal grains ensure the ductility, so that the molded metal material combines high strength and high toughness.

Researchers successfully tested most of the metal materials such as titanium, aluminum, iron, copper, and cobalt alloys. The tensile strength of the new metal material made of pure titanium is 1.5 times that of the conventional method, and the toughness is 2.2 times. (Reporter Lan Jianzhong)

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