Slip line analysis around nanoindentation imprints in Ti3SnC2: a new insight into plasticity of MAX-phase materials
Slip line analysis around nanoindentation imprints in Ti3SnC2: a new insight into plasticity of MAX-phase materials
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DOI：
10.1080/14786435.2010.494584
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发表时间：
2011-01-01
影响因子：
1.6
通讯作者：
Dubois, S.
中科院分区：
文献类型：
--
作者：
Tromas, C.;Villechaise, P.;Dubois, S.
研究了一种新合成的MAX相Ti3SnC2的塑性。在多晶样品中通过纳米压痕引起局部变形，并通过原子力显微镜（AFM）观察所得的表面形貌。对于几个晶粒，观察到周围的弯曲，在协议的扭结带变形过程中经常报告的MAX相材料。对于其他颗粒，滑移线已被AFM揭示。相应的滑移系已被确定通过电子背散射衍射的局部晶体取向的测定。第一和第二阶金字塔滑移系统被证明是积极的一些晶粒取向，以及位错相互作用和交叉滑移从一个系统到另一个。
The plasticity of Ti3SnC2, a recently synthesized MAX phase, was investigated. Localized deformation was induced by nanoindentation in a polycrystalline sample, and the resulting surface topography was observed by atomic force microscopy (AFM). For several grains, buckling around the indent was observed, in agreement with the kink band deformation process often reported for MAX-phase materials. For other grains, slip lines have been revealed by AFM. The corresponding slip systems have been identified through the determination of the local crystalline orientation by electron backscatter diffraction. First- and second-order pyramidal slip systems are shown to be active for some grain orientations, as well as dislocation interactions and cross slip from one system to the other.