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| 1 | 原位电子显微学方法在材料研究中的应用显示文摘透射电子显微镜具有亚埃的空间分辨率,与各类原位手段相结合,已成为研究材料构效关系最有用的工具之一。它不仅可以在原子尺度上直接观察原子排列的动态演变过程,还可以进行原位充放电、升降温、拉伸、光场磁场、气体和液体环境等调控,极大推动了对材料性能物理机制的深入探索。本文简单介绍了几种常用的原位电子显微学方法,包括原位电学、原位热学、原位力学、原位磁学以及原位电子束辐照,对其在材料科学研究中的应用进行了简单综述,并对原位电子显微学方法前沿进行了展望。 | 翁素婷 张庆华 谷林 | 2019 | 电子显微学报2019，38，5： | 17 |
| 2 | Crimp feasibility of AZ31 magnesium alloy wide plate at warm temperatures responding to asymmetry显示文摘The crimp feasibility of AZ31 Mg alloy wide plate responding to asymmetry and anisotropy at different temperatures was conducted by bending experiments and numerical simulation.Through the microstructural characteristic,mechanical properties,EBSD and FEM analysis,the results indicated that{10-12}twins and pyramidal(a)slip were dominated at the inner surface layer of the plate,while prismatic and pyramidal(a)slips were controlled at the outer layer when bending at 100℃,and their quantity decreased as the temperature elevation and vanished at 200℃.The flexural deflection increased gradually with the augment of flexural temperature,while the fracture stress weakened.A large number of twins nucleated and grew in the coarse grain,causing major distribution proportion of high angular grain boundaries(HAGBs)at the compression part,which could improve its flexural properties and affect subsequent strain contours,twins and recrystallization distribution.The offset of the neutral layer declined from 1.4125 mm to 0.7261 mm with the temperature rising from 100℃to 250℃when bending,while it was concentrated on 0.0338-0.0481 mm when coiling,accounting for 0.26%-0.37%of the plate thickness.At last,the reel diameter descended with increasing the temperature and coiling rate. | Fangkun Ning Qichi Le Jiashi Yan Yonghui Jia | 2022 | Journal of Magnesium and Alloys2022，10，3： | 0 |
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