کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1445553 | 1509598 | 2014 | 10 صفحه PDF | دانلود رایگان |
Coherent X-ray diffraction is able to yield non-destructively 3-D strain maps with unprecedented resolution in small isolated crystals. In this work we have used this technique to investigate the mechanical behavior of a single grain within a Au polycrystalline film. The 111 Bragg reflection from a 1250×950×4751250×950×475 nm single grain has been successfully measured in three dimensions during thermomechanical loading. From these 3-D reciprocal space maps the displacement field is obtained through a specific phase-retrieval procedure. The uz(x,y,z)uz(x,y,z) component of the displacement field component is deduced as a function of temperature with a high spatial resolution of 17×17×2217×17×22 nm within the single grain. This displacement field is discussed with respect to grain-to-grain interactions in the supported metal film. This study opens important perspectives for the evaluation of mechanical properties of polycrystals via coherent X-ray diffraction.
Journal: Acta Materialia - Volume 78, 1 October 2014, Pages 46–55