Etude du comportement mécanique de différents alliages de Zn-Cu-Ti : influence de la composition sur la pliabilité

Abstract : We worked on different zinc-copper-titanium alloy sheets (ZnCu matrix with Ti Zn15 as second phase). We studied in particular the texture, microstructure and mechanical properties of these sheets, especially their pliability. Indeed, it appears that the pliability of these sheets is determined to a large extent by their texture and microstructure. When the sheets have large grains (15 [micro]m), the texture is rather smooth and many grain boundaries show a strong misorientation ; intergranular cracking may appear as a consequence. When the sheets have smaller grains (8 [micro]m), the texture is sharper, the grain boundaries show a small misorientation and the pliability at low temperature is fairly good. By further reduction of the grain size, a new texture component appears, which c axes are tilted to a large to the normal of the sheet. As intergranular cracking easily occurs in these grains (clivage on the 00.2 plane, the global pliability of the sheet is diminished
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Ivan Beaujean. Etude du comportement mécanique de différents alliages de Zn-Cu-Ti : influence de la composition sur la pliabilité. Autre. Université Paul Verlaine - Metz, 1993. Français. ⟨NNT : 1993METZ031S⟩. ⟨tel-01775424⟩

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