Local mechanical properties of AlxCoCrCuFeNi high entropy alloy characterized using nanoindentation

Sun, Yanan1; Chen, Peng1; Liu, Lehua2; Yan, Ming3; Wu, Xiaoyu1; Yu, Chunyan4; Liu, Zhiyuan1

2018-02

10.1016/j.intermet.2017.11.010

INTERMETALLICS   影响因子和分区

0966-9795

1879-0216

With the addition of Al element, the microstructure of high entropy alloy AlxCoCrCuFeNi ( x= 0.5, 1.5 and 3.0) changes from single FCC to FCC + BCC and then to single BCC phase. Hardness and elastic modulus of different phases in the HEAs are measured utilizing nanoindentation method. It is found that with the increase of the Al element, the hardness rises more significantly in the BCC phase than that in the FCC phase. The reason is attributed to that the AI element has a stronger solid-solution strengthening effect in the BCC phase, due to the larger elastic modulus mismatch. The precise characterization of local mechanical properties of different phases in the HEAs provides us opportunity to design alloys with desired performance.

High entropy alloy Solid solution strengthening Nanoindentation Hardness and modulus Elastic modulus mismatch Lattice distortion

SCI ; EI

英语

其他

Natural Science Foundation of Shenzhen University[201553]

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000424717300012

ELSEVIER SCI LTD

20174804467447

Aluminum alloys ; Chromium alloys ; Cobalt alloys ; Copper alloys ; Elastic moduli ; Entropy ; Hardness ; Iron alloys ; Mechanical properties ; Nanoindentation ; Solid solutions

Aluminum:541.1 ; Aluminum Alloys:541.2 ; Chromium and Alloys:543.1 ; Copper Alloys:544.2 ; Iron Alloys:545.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Nanotechnology:761 ; Solid State Physics:933 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Shenzhen Univ, Guangdong Prov Key Lab Micro Nano Optomechatron E, Shenzhen, Peoples R China
2.Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China
3.South Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China
4.Shenzhen Univ, Coll Phys & Energy, Shenzhen, Peoples R China

Sun, Yanan,Chen, Peng,Liu, Lehua,et al. Local mechanical properties of AlxCoCrCuFeNi high entropy alloy characterized using nanoindentation[J]. INTERMETALLICS,2018,93:85-88.

Sun, Yanan.,Chen, Peng.,Liu, Lehua.,Yan, Ming.,Wu, Xiaoyu.,...&Liu, Zhiyuan.(2018).Local mechanical properties of AlxCoCrCuFeNi high entropy alloy characterized using nanoindentation.INTERMETALLICS,93,85-88.

Sun, Yanan,et al."Local mechanical properties of AlxCoCrCuFeNi high entropy alloy characterized using nanoindentation".INTERMETALLICS 93(2018):85-88.