Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals

G.M. Cheng; W.W. Jian; W.Z. Xu; H. Yuan; P.C. Millett; Y.T. Zhu

doi:10.1080/21663831.2012.739580

Chinese

您当前的位置：

首页 >

文章列表页 >

Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals

Original Reports | 更新时间：2026-08-19

- Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals
- Materials Research Letters Vol. 1, Issue 1, Pages: 26-31(2013)
- 作者机构：
  
  1. Department of Material Science and Engineering North Carolina State University Raleigh NC
  2. Fuels Modeling and Simulations Idaho National Laboratory Idaho Falls ID
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2012.739580
  CLC：
- Online First：29 November 2012，
  
  Published：2013
- 稿件说明：
移动端阅览
G.M. Cheng, W.W. Jian, W.Z. Xu, et al. Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals[J]. Materials Research Letters, 2013, 1(1): 26-31.
DOI：

G.M. Cheng, W.W. Jian, W.Z. Xu, et al. Grain Size Effect on Deformation Mechanisms of Nanocrystalline bcc Metals[J]. Materials Research Letters, 2013, 1(1): 26-31. DOI： 10.1080/21663831.2012.739580.

摘要

Abstract

Nanocrystalline (NC) body-centered cubic (bcc) metals behave very differently from how NC metals with other crystal structures behave. Their strain rate sensitivity decreases with decreasing grain size

which is an observation that has not been well understood. Here

we report a significant effect of grain size on the deformation mechanism of NC bcc Mo. With decreasing grain size

the density of mixed and edge dislocations increases

while the density of screw dislocations decreases. When the grains become very small

the overall dislocation density decreases with decreasing grain size. These observations provide a logical explanation for the observed effect of grain size on strain rate sensitivity.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study of deformation mechanisms in flash-sintered yttria-stabilized zirconia by in-situ micromechanical testing at elevated temperatures

The role of Ta on twinnability in nanocrystalline Cu–Ta alloys

In-situ nanopillar compression analysis of prismatic and pyramidal slip strengths in Zr-Nb alloys

Mechanism of the reversed yield asymmetry in a strong-textured Mg-RE alloy at room temperature

Long-term anti-friction gradient coating on titanium alloys by plasma electrolytic oxidation with efficient strain transfer

Related Author

Jaehun Cho

Jin Li

Han Wang

Qiang Li

Zhe Fan

A.K. Mukherjee

W. Rheinheimer

Haiyan Wang

Related Institution

School of Materials Engineering Purdue University West Lafayette

Oak Ridge National Laboratory Oak Ridge

Department of Chemical Engineering & Materials Science University of California Davis

School of Materials Engineering Purdue University West Lafayette IN USA

School of Electrical and Computer Engineering Purdue University West Lafayette

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰