Al-2.4%Mg(5052)合金の冷間圧延集合組織の形成に関する研究

概要

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The rolling texture of Al-2.4 % Mg (5052) alloy was studied by determining (111) pole figures after different reductions at room temperature using X-ray diffractmeter method. The effect of the decrease of the stacking fault energy due to alloying upon the rolling texture and the fomation mechanism of the rolling texture were investigated in the present paper. The results obtained from the X-ray pole figure are as follows :(1) The cold rolling texture of 5052 developed a pure metal type, and a series of the experiments supported the theory proposed by DILLAMORE et al. However, as a consequence of the process of developing the rolling texture of the random orientation polycrystal specimen and the (001)(110) polycrystal, probability that (112)(111) was formed at an early stage of the rolling reduction was found out to exist. (2) When cross slip does not occur, the rolling texture is (011)C211). The appearance of this orientation can be considered to take place owing to the operation of the primary and conjugate slip of 131 and A5, and then this orientation rotates towards (112) 0111) orientation under the operation of Cl and C5, which are cross-slip systems of Bl and A5 individually, but, the stacking fault energy of the material is lower than that of pure aluminium, so that (112) (111) orientation is undistinguishable.
信州大学工学部の論文
1972-07-25