Toth Laszlo S, Skrotzki Werner, Zhao Yajun, Pukenas Aurimas, Braun Christian, Birringer Rainer
Laboratory of Excellence on Design of Alloy Metals for Low-Mass Structures (DAMAS), Université de Lorraine, 57073 Metz, France.
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine, 57073 Metz, France.
Materials (Basel). 2018 Jan 25;11(2):190. doi: 10.3390/ma11020190.
Employing a recent modeling scheme for grain boundary sliding [Zhao et al. , doi:10.1002/adem.201700212], crystallographic textures were simulated for nanocrystalline fcc metals deformed in shear compression. It is shown that, as grain boundary sliding increases, the texture strength decreases while the signature of the texture type remains the same. Grain boundary sliding affects the texture components differently with respect to intensity and angular position. A comparison of a simulation and an experiment on a Pd-10 atom % Au alloy with a 15 nm grain size reveals that, at room temperature, the predominant deformation mode is grain boundary sliding contributing to strain by about 60%.
采用一种最新的晶界滑动建模方案[Zhao等人，doi:10.1002/adem.201700212]，对在剪切压缩下变形的纳米晶面心立方金属的晶体织构进行了模拟。结果表明，随着晶界滑动增加，织构强度降低，而织构类型特征保持不变。晶界滑动对织构组分在强度和角位置方面的影响有所不同。对一种晶粒尺寸为15 nm的Pd - 10原子% Au合金进行的模拟与实验对比表明，在室温下，主要变形模式是晶界滑动，其对应变的贡献约为60%。
