Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning

T. Yang; Y. L. Zhao; W. H. Liu; J. H. Zhu; J. J. Kai; C. T. Liu

doi:10.1080/21663831.2018.1518276

Chinese

您当前的位置：

首页 >

文章列表页 >

Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning

Original Report | 更新时间：2026-08-19

- Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning
- Materials Research Letters Vol. 6, Issue 10, Pages: 600-606(2018)
- 作者机构：
  
  1. Department of Mechanical and Biomedical Engineering City University of Hong Kong
  2. Department of Material Science and Engineering Xiamen University
  3. Department of Mechanical and Biomedical Engineering City University of Hong Kong Hong Kong People's Republic of China
  4. Center for Advanced Nuclear Safety and Sustainable Development City University of Hong Kong
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1518276
  CLC：
- Online First：07 September 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
T. Yang, Y. L. Zhao, W. H. Liu, et al. Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning[J]. Materials Research Letters, 2018, 6(10): 600-606.
DOI：

T. Yang, Y. L. Zhao, W. H. Liu, et al. Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning[J]. Materials Research Letters, 2018, 6(10): 600-606. DOI： 10.1080/21663831.2018.1518276.

摘要

Abstract

BSTRACTHigh-strength high-entropy alloys (HEAs) reinforced by hard intermetallics generally show a propensity for embrittlement

significantly undercutting their applications. Here we report a strategy to intrinsically toughen strong-yet-brittle HEAs via altering the valence electron concentration (VEC) of precipitates. It was found that a decrease of the VEC of precipitates by Co substitution for Ni atoms effectively destabilizes the brittle hexagonal-ordered precipitate and promotes the formation of ductile cubic-ordered nano-precipitates in Ni–Co–Fe–Cr–Ti system. Benefiting from such a transformation

a fivefold enhancement of tensile elongation (from 7% to 35%) was successfully achieved together with a simultaneously improved strength up to ∼1.35 GPa.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Cryogenic nano-twinning engineering to mitigate the strength–hydrogen embrittlement trade-off in a high-entropy alloy

New transformation mechanism of TiB from Bf to B27 structure in β-solidified TiAl alloys

Decoding deformation-induced phase transformation in a high entropy alloy via nanoindentation pop-in phenomenon

Heterostructure-enabled creep resistance and deformation mechanisms in a new Ni-Co-based high-entropy alloy

Simultaneously improving strength and ductility of laser-powder-bed-fused Al–Zn–Mg–Cu–Ti alloys by controlling phase structure of Al3Ti

Related Author

Rae Eon Kim

Jumi Choi

Ho Hyeong Lee

Bon Woo Koo

Shi Woo Lee

Sujung Son

Hyojeong Ha

Do Won Lee

Related Institution

1 Graduate Institute of Ferrous & Eco Materials Technology Pohang University of Science and Technology (POSTECH)

2 Department of Materials Science and Engineering Pohang University of Science and Technology (POSTECH)

1 Graduate Institute of Ferrous & Eco Materials Technology Pohang University of Science and Technology (POSTECH) Pohang Republic of Korea

Department of Materials Science and Engineering Pohang University of Science and Technology (POSTECH) Pohang Republic of Korea

Center for Heterogenic Metal Additive Manufacturing Pohang University of Science and Technology (POSTECH) Pohang Republic of Korea

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