超音波顕微鏡によるアルミ合金圧延板の組織異方性の計測

概要

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The texture-anisotropy of rolled plate was measured using a scanning acoustic microscope (SAM) for acousto-elasticity research. A new technique to influence V(Z) curve by varying the power of ultrasonic signal was proposed for the accurate velocity measurement of a leaky Rayleigh wave. This technique improved the accuracy by one-fifth over the conventional method. The magnitude of the texture-anisotropy of cold-rolled aluminum plate distributes parabolically along the thickness of the plate. It remains almost constant in the center part of the plate, and becomes suddenly large at both surfaces of the plate. Comparing two kinds of plate of the same thickness which were rolled either by many passes of a small reduction roll, or by a few paths of a high reduction roll, the magnitude and the variation of texture-anisotropy of the former are larger than those of the latter.
一般社団法人日本機械学会の論文
1991-05-25