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论图案对称律形式及其构成方法 被引量:4
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作者 陆宝新 《西北大学学报(哲学社会科学版)》 CSSCI 2003年第2期127-129,共3页
对称律是图案构成的基本形式规律之一,以对称的基本形式为出发点,从形态到空间利用对称律的构成形式和手法,根据这一构成形式规律,使对称在形态与空间两方面得到丰富的创造。
关键词 对称律 形态 空间 单形组合 分解组合
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Simulation of texture evolution and deformation mechanism in Mg-3Al-1Zn alloy during uniaxial compression 被引量:6
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作者 YAO JinYi WANG BingShu +3 位作者 DENG LiPing CHAPUIS Adrien LI Qiang LIU Qing 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2015年第12期2052-2059,共8页
The effects of starting texture on he flow curves, and microstructure and texture evolutions of AZ31(Mg-3Al-1Zn-0.3Mn in wt.%) alloy during uniaxial compression at room temperature have been investigated by experiment... The effects of starting texture on he flow curves, and microstructure and texture evolutions of AZ31(Mg-3Al-1Zn-0.3Mn in wt.%) alloy during uniaxial compression at room temperature have been investigated by experiments and simulations. Two kinds of cylindrical compression samples were cut from the AZ31 extruded rod: one was cut with the compression direction parallel to the extruded direction(ED), and the other was cut with the compression axis perpendicular to the ED. The samples were termed as C//ED sample and C⊥ED sample, respectively. The results indicate that the general characteristics of flow curves and texture evolutions in both C⊥ED and C//ED samples during compression can be well explained by the relative activities of deformation mechanisms, which show a strong orientation dependence on the initial textures and the current texture. A significant yield behavior can be induced by {10-12} twinning at the starting deformation, and the lower yield stress in C⊥ED sample can be enhanced by the high activity of basal slip. The work hardening behavior is related to the activities of basal slip, pyramidal <c+a> slip, {10-12} twinning, as well as {10-11} twinning. However, the activity of prismatic slip is insensitive to the starting texture, and mostly negligible in all samples. 展开更多
关键词 magnesium alloy EBSD TWINNING crystal plasticity
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