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Behaviour of hydrogen in pure aluminium, Al-4 mass% Cu and Al-1 mass% Mg 2 Si alloys studied by tritium electron microautoradiography

Saitoh, H. ; Iijima, Y. ; Hirano, K.

Journal of Materials Science, 1994, Vol.29(21), pp.5739-5744 [Tạp chí có phản biện]

ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/BF00349974

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  • Nhan đề:
    Behaviour of hydrogen in pure aluminium, Al-4 mass% Cu and Al-1 mass% Mg 2 Si alloys studied by tritium electron microautoradiography
  • Tác giả: Saitoh, H. ; Iijima, Y. ; Hirano, K.
  • Chủ đề: Hydrierung ; Aluminium ; Aluminiumlegierung ; Kupferzusatz ; Mikroradiographie ; Versetzung ; Korngrenze ; Ausscheidung (Metallurgie) ; Guinier-Preston-Zone ; Beta-Phase ; Mikrogefüge ; Theta-Phase ; Aluminiummagnesiumsiliciumlegierung ; Engineering
  • Là 1 phần của: Journal of Materials Science, 1994, Vol.29(21), pp.5739-5744
  • Mô tả: The effect of lattice defects and microstructures on hydrogen distribution in pure aluminium, Al-4 mass% Cu and Al-1 mass% Mg 2 Si alloys has been studied by tritium electron microautoradiography. It was found that in pure aluminium and both the alloys, dislocations and grain boundaries act as short-circuiting diffusion paths and also as trapping sites for hydrogen. It was found that the Guinier-Preston (GP) zones in the Al-1 mass% Mg 2 Si alloy do not act as trapping sites but as repellants for hydrogen, in contrast to the GP zones in the Al-4 mass% Cu alloy in which they act as trapping sites for hydrogen. In the Al-1 mass% Mg 2 Si alloy, the interfaces between the matrix lattice and the metastable β′ precipitate and between the matrix lattice and the equilibrium β precipitate, were proved to be strong trapping sites for hydrogen. In the Al-4 mass% Cu alloy, the equilibrium θ precipitate itself has been found to be able to trap hydrogen.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/BF00349974

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