Strain gradients in Cu-Fe thin films and multilayers during micropillar compression

Jiangting Wang; Chunhui Yang; Peter D. Hodgson

首页> 外文期刊>Materials Science and Engineering >Strain gradients in Cu-Fe thin films and multilayers during micropillar compression

【24h】

Strain gradients in Cu-Fe thin films and multilayers during micropillar compression

机译：Cu-Fe薄膜和多层微柱压缩过程中的应变梯度

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Plastic strain gradients can influence the work-hardening behaviour of metals due to the accumulation of geometrically necessary discolations at the micron/submicron scale. A finite element model based on the conventional theory of mechanism-based strain-gradient plasticity has been developed to simulate the micropillar compression of Cu-Fe thin films and multilayers. The modelling results show that the geometric constraints lead to inhomogeneous deformation in the Cu layers, which agrees well with the bulging of Cu layers observed experimentally. Plastic strain gradients develop inside the individual layers, leading to extra work-hardening due to the accumulation of geometrically necessary dislocations. In the multilayer specimens, the Cu layers deform more severely than the Fe layers, resulting in the development of tensile stresses in the Fe layers. It is proposed that these tensile stresses are responsible for the development of micro-cracks in the Fe layers.

机译：塑性应变梯度可能会影响金属的加工硬化行为，这是由于在微米/亚微米级上几何上必要的散射累积所致。建立了基于传统的基于机理的应变梯度塑性理论的有限元模型，以模拟Cu-Fe薄膜和多层薄膜的微柱压缩。建模结果表明，几何约束导致铜层不均匀变形，这与实验观察到的铜层鼓胀非常吻合。塑性应变梯度在各个层内部发展，由于几何上必要的位错的积累，导致额外的加工硬化。在多层样品中，Cu层的变形要比Fe层严重，导致在Fe层中产生张应力。提出这些拉伸应力是导致Fe层中微裂纹发展的原因。

著录项

来源
《Materials Science and Engineering》 |2016年第10期|146-154|共9页
作者
Jiangting Wang; Chunhui Yang; Peter D. Hodgson;
展开▼
作者单位

Institute for Frontier Materials, Deakin University, Geelong, Australia;

School of Computing, Engineering and Mathematics, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia;

Institute for Frontier Materials, Deakin University, Geelong, Australia;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词
Micromechanics; Strain gradient; GNDs; Thin film; Multilayer;

机译：微力学;应变梯度地;薄膜;多层的;

相似文献

外文文献
中文文献
专利

1. Strain rate sensitivity and activation volume of Cu/Ni metallic multilayer thin films measured via micropillar compression [J] . Carpenter J. S., Misra A., Uchic M. D., Applied Physics Letters . 2012,第5期

机译：通过微柱压缩测量的Cu / Ni金属多层薄膜的应变速率敏感性和活化体积
2. Strain rate sensitivity and activation volume of Cu/Ni metallic multilayer thin films measured via micropillar compression [J] . J.S.Carpenter, A.Misra, M.D.Uchic, Applied Physics Letters . 2012,第5期

机译：通过微柱压缩测量的Cu / Ni金属多层薄膜的应变速率敏感性和活化体积
3. Elevated and cryogenic temperature micropillar compression of magnesium-niobium multilayer films [J] . Thomas K., Mohanty G., Wehrs J., Journal of Materials Science . 2019,第15期

机译：镁 - 铌多层薄膜的升高和低温微米细胞压缩
4. Strain-enhanced Dielectric and Ferroelectric Properties of Pb(Zr_(0.8)Ti_(0.2))O_3/Pb(Zr_(0.2)Ti_(0.8))O_3 Multilayer Thin Films Without Buffer Layers [C] . H. Liu, X. Gong, J. Liang Materials Science Technology Conference and Exhibition . 2007

机译：应变增强的PB（Zr_（0.8）Ti_（0.2））O_3 / PB（Zr_（0.2）Ti_（0.8））O_3多层薄膜而无缓冲层的介电和铁电性能
5. Dislocation dynamics and plasticity in micropillars and thin films. [D] . Weinberger, Christopher Robert. 2009

机译：微柱和薄膜中的位错动力学和可塑性。
6. Giant optical enhancement of strain gradient in ferroelectric BiFeO3 thin films and its physical origin [O] . Yuelin Li, Carolina Adamo, Pice Chen, -1

机译：铁电BiFeO3薄膜应变梯度的巨光学增强及其物理成因。
7. Creating Effective Refractive Index Gradients Within Polyelectrolyte Multilayer Films: Molecularly Assembled Rugate Filters [O] . -1

机译：在聚电解质多层薄膜内创建有效的折射率梯度：分子组装的真实滤光器

Strain gradients in Cu-Fe thin films and multilayers during micropillar compression

摘要

著录项

相似文献

相关主题

期刊订阅