Characterization of Shear Deformation Based on In-situ Observation of Deformation in Semi-Solid Al-Cu Alloys and Water-Particle Mixture

Nagira Tomoya, Yokota Hiroyoshi, Morita Shugo, Yasuda Hideyuki, Yoshiya Masato, Gourlay C.M., Sugiyama Akira, Uesugi Kentarou, Umetani Keiji

doi:10.2355/isijinternational.53.1195

Bibliographic Information

Other Title

固液共存状態Al-Cu合金と水‐粒子混合体のせん断変形過程のその場観察に基づいたせん断変形組織の特徴
コエキキョウゾンジョウタイ Al-Cu ゴウキントミズ-リュウシコンゴウタイノセンダンヘンケイカテイノソノバカンサツニモトズイタセンダンヘンケイソシキノトクチョウ

Search this article

Description

In-situ observation of deformation in semi-solid alloys at the grain scale has been carried out using X-ray radiography. This paper characterizes the deformed microstructure in the semi-solid state by a quantitative analysis of solid motion from the image sequences obtained by the in-situ experiment on semi-solid Al-Cu alloys. A velocity of solid, a shear strain rate and a divergence of solid rate, which correspond to the change in solid fraction, were evaluated during a 0.5-1d (d: crystal size) increment of direct shear. The effect of solid morphology on the shear deformation was also examined by in-situ observation of deformation in water-polystyrene particle mixture where the polystyrene particles are spherical (shape factor~1) with diameter of 500 μm. The shear strain was localized in the vicinity of the shear domain and the localized area corresponds to the area where the solid fraction decreased both in semi-solid Al-Cu alloys and the water-particle mixture. The waterpolystyrene particle mixture showed a narrower localized area of the shear strain than that of Al-Cu alloys due to the difference in the solid shape.

Journal

Tetsu-to-Hagane

Tetsu-to-Hagane 99 (2), 141-148, 2013

The Iron and Steel Institute of Japan

Keywords

Details 詳細情報について

Export

Report a problem