Orientation dependence of indentation behavior in Al–SiC nanolaminate composites
Orientation dependence of indentation behavior in Al–SiC nanolaminate composites
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DOI：
10.1016/j.matlet.2016.01.049
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发表时间：
2016-04
影响因子：
3
通讯作者：
C. Mayer;L. Yang;S. Singh;H. Xie;Yu‐Lin Shen;J. Llorca;J. Molina-Aldareguia;N. Chawla
中科院分区：
文献类型：
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作者：
C. Mayer;L. Yang;S. Singh;H. Xie;Yu‐Lin Shen;J. Llorca;J. Molina-Aldareguia;N. Chawla
利用纳米压痕技术对Al和SiC纳米叠层薄膜进行了垂直、倾斜和平行取向的表征。当层平行于压头时，变形由层的屈曲主导，当层垂直于压头时，变形由韧性Al层的压缩主导，而倾斜取向的压痕表现出中间行为。使用波纹层的压痕变形的有限元建模（FEM）显示出比理想化的平坦结构更柔顺的行为和突出的层屈曲，突出了这些微观结构细节对变形行为的巨大影响。
Al and SiC nanolaminate films were characterized in the perpendicular, inclined and parallel orientations using nanoindentation. The deformation was dominated by buckling of the layers when the layers were parallel to the indenter and by compression of the ductile Al layers when the layers were perpendicular to the indenter, while indentation in inclined orientations showed an intermediate behavior. Finite element modeling (FEM) of indentation deformation using wavy layers showed much more compliant behavior and prominent layer buckling than the idealized flat structure, highlighting the large effect these microstructural details can have on the deformation behavior.