Modeling effects of constituents and dispersoids on tensile ductility of aluminum alloy

来源期刊：中南大学学报(英文版)2007年第4期

论文作者：宋旼 陈康华 齐雄伟

文章页码：456 - 456

Key words：aluminum alloy; tensile ductility; modeling; deformation; fracture

Abstract: The modeling effects of constituents and dispersoids on the tensile ductility of aluminum alloy were studied. The results show that the tensile ductility decreases with the increase of the volume fraction and size of constituents. Thus, purification can improve the tensile ductility by decreasing the volume fraction of constituents (normally compositions of Fe and Si) and the first-class microcracks. The model also indicates that the tensile ductility decreases with the increase in the volume fraction of dispersoids. Decreasing the volume fraction of dispersoids along the grain boundaries by proper heat-treatment and improving the cohesion strength between dispersoids and matrix can also improve the tensile ductility by decreasing the volume fraction of the second-class microcracks.

基金信息：National Key Fundamental Research and Development Program of China