期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 115, 期 -, 页码 93-110出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2018.11.014
关键词
Heterogeneous structure; Aluminium; Microstructure; Microhardness; Electron microscopy; Finite element modelling; Compression; Ring tests
资金
- Danish Council for Independent Research [DFF-1335-00230]
- Fundacao para a Ciencia e a Tecnologia of Portugal
- IDMEC under LAETA [UID/EMS/50022/2013]
The local stress and strain are analyzed in a heterogeneous microstructure induced by compression of aluminium rings under nearly full sticking conditions. This analysis is based on characterization of mechanical behavior and microstructure applying three complementary techniques covering multiple length scales: microhardness, electron microscopy (electron back-scatter diffraction) and finite element modelling. The findings are underpinned by applying those techniques in an analysis of a homogeneous microstructure induced by compression of hot-extruded aluminium cylinders. The local stress and strain are estimated at 14 different positions in two rings representing large variations in strain. A comparison with the stress and strain in the homogeneously compressed cylinders related to the average spacing between deformation induced low and high angle boundaries, validates the characterization techniques and supports a hypothesis that the microstructure of local regions in a heterogeneous structure evolve in accordance with universal principles and mechanisms established for the evolution of the deformation microstructure of polycrystalline metals.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据