材料科学
粒度
纹理(宇宙学)
微观结构
极限抗拉强度
冶金
延展性(地球科学)
位错
铝
变形(气象学)
复合材料
蠕动
计算机科学
人工智能
图像(数学)
出处
期刊:Nanomaterials
[MDPI AG]
日期:2023-07-30
卷期号:13 (15): 2214-2214
摘要
Creating alloys with a gradient microstructure in grain size has been shown to be a potential method to resolve the trade-off dilemma between strength and ductility. However, different textures developed with various processing methods cannot be fully eliminated, which can significantly affect the mechanical behavior of alloys. In this study, we use a multiscale framework based on dislocation theory to investigate how the combination of rolling texture and gradient in grain size affects the plastic deformation of nano-gradient aluminum during a tensile test. We found that specific rolling textures, such as {110} texture, can significantly enhance the strength and ductility of nano-gradient aluminum. This improvement is the result of the grain being reoriented and the redistribution of stress and strain, which are caused by the combined influence of texture and variation in grain size. These results provide new insights into developing high-performance aluminum by mediating texture and grain size gradient.
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