Grain boundary strengthening of FCC polycrystals

Arturo Rubio R.; Haouala Sarra; Llorca Javier

首页> 外文期刊>Journal of Materials Research >Grain boundary strengthening of FCC polycrystals

【24h】

Grain boundary strengthening of FCC polycrystals

机译：FCC多晶的晶界强化

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

The effect of grain size on the flow strength of FCC polycrystals was analyzed by means of computational homogenization. The mechanical behavior of each grain was dictated by a dislocation-based crystal plasticity model in the context of finite strain plasticity and takes into the account the formation of pile-ups at grain boundaries. All the model parameters have a clear physical meaning and were identified for different FCC metals from dislocation dynamics simulations or experiments. It was found that the influence of the grain size on the flow strength of FCC polycrystals was mainly dictated by the similitude coefficient K that establishes the relationship between the dislocation mean free path and the dislocation density in the bulk. Finally, the modeling approach was validated by comparison with experimental results of the effect of grain size on the flow strength of Ni, Al, Cu, and Ag.

机译：通过计算均质分析了晶粒尺寸对FCC多晶流动强度的影响。在有限应变可塑性的情况下，由基于位错的晶体可塑性模型决定了每种晶粒的力学行为，并考虑了晶界处堆积物的形成。所有模型参数均具有明确的物理含义，并通过位错动力学模拟或实验针对不同的FCC金属进行了识别。发现晶粒尺寸对FCC多晶体流动强度的影响主要由相似系数K决定，该相似系数K建立了位错平均自由程与块体内位错密度之间的关系。最后，通过与晶粒尺寸对Ni，Al，Cu和Ag的流动强度的影响的实验结果进行比较，验证了建模方法的有效性。

著录项

来源
《Journal of Materials Research》 |2019年第13期|2263-2274|共12页
作者
Arturo Rubio R.; Haouala Sarra; Llorca Javier;
展开▼
作者单位

IMDEA Mat Inst, Madrid 28906, Spain;

IMDEA Mat Inst, Madrid 28906, Spain;

IMDEA Mat Inst, Madrid 28906, Spain|Univ Politecn Madrid, Dept Mat Sci, Madrid 28040, Spain;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
grain size; strength; polycrystal;

机译：晶粒度;强度;多晶;

相似文献

外文文献
中文文献
专利

1. Grain boundary strengthening of FCC polycrystals [J] . Arturo Rubio R., Haouala Sarra, Llorca Javier Journal of Materials Research . 2019,第13期

机译：FCC多晶的晶界强化
2. Dislocation versus grain boundary strengthening in SPD processed metals: Non-causal relation between grain size and strength of deformed polycrystals [J] . M.J. Starink Materials Science and Engineering . 2017,第sepa29期

机译：SPD加工金属中的位错与晶界强化：晶粒尺寸与变形多晶强度之间的非因果关系
3. Strengthening mechanism in micro-polycrystals with penetrable grain boundaries by discrete dislocation dynamics simulation and Hall-Petch effect [J] . Li ZH, Hou CT, Huang MS, Computational Materials Science . 2009,第4期

机译：离散位错动力学模拟和Hall-Petch效应强化具有可渗透晶界的微多晶
4. Investigation of the Diffusion Mechanism of ~(57)Co Atomic Probes at the Grain Boundary Core, Segregation of ~(57)Co at Grain Boundaries and Measurement of the Diffusion Parameters of ~(57)Co Outside of the Grain Boundary Core in Polycrystals of Ta, W and [C] . M.I. Kurkin, V.N. Kaigorodov, S.M. Klotsman International conference on diffusion in materials . 2001

机译：晶界核心〜（57）CO在晶界晶界晶界偏析中的分离及〜（57）晶界核心外晶界缺陷扩散参数的析出机理的研究ta，w和
5. Deformation mechanisms at grain boundaries in polycrystal plasticity. [D] . Al-Fadhalah, Khaled Jabr. 2004

机译：多晶可塑性中晶界处的变形机制。
6. The Effect of Vacancies on Grain Boundary Segregation in Ferromagnetic fcc Ni [O] . Martina Mazalová, Monika Všianská, Jana Pavlů, 2020

机译：空位对铁磁fcc Ni中晶界偏析的影响
7. Grain boundary strengthening of FCC polycrystals [O] . R. Arturo Rubio, Sarra Haouala, Javier LLorca 2019

机译：FCC多晶的晶界强化
8. The Strengthening,or Weakening,of Polycrystals Due to the Presence of Grain Boundaries. [R] . armstrong,ronald w. 1973

机译：由于晶界的存在，多晶体的强化或弱化。

Grain boundary strengthening of FCC polycrystals

摘要

著录项

相似文献

相关主题

期刊订阅