Promoting columnar-to-equiaxed transition in AlCoCrFeNi high entropy alloy during selective laser melting by adding Cr3C2

Xingyu Pan; Chunlei Qiu

doi:10.1080/21663831.2022.2106798

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Promoting columnar-to-equiaxed transition in AlCoCrFeNi high entropy alloy during selective laser melting by adding Cr3C2

Original Reports | 更新时间：2026-08-19

- Promoting columnar-to-equiaxed transition in AlCoCrFeNi high entropy alloy during selective laser melting by adding Cr3C2
- Materials Research Letters Vol. 10, Issue 12, Pages: 788-796(2022)
- 作者机构：
  
  School of Materials Science and Engineering Beihang University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2106798
  CLC：
- Online First：02 August 2022，
  
  Published：2022
- 稿件说明：
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Xingyu Pan, Chunlei Qiu. Promoting columnar-to-equiaxed transition in AlCoCrFeNi high entropy alloy during selective laser melting by adding Cr3C2[J]. Materials Research Letters, 2022, 10(12): 788-796.
DOI：

Xingyu Pan, Chunlei Qiu. Promoting columnar-to-equiaxed transition in AlCoCrFeNi high entropy alloy during selective laser melting by adding Cr3C2[J]. Materials Research Letters, 2022, 10(12): 788-796. DOI： 10.1080/21663831.2022.2106798.

摘要

Abstract

BSTRACTThe 5 at% Cr

particles were mixed with AlCoCrFeNi high entropy alloy powder particles and then selectively laser melted. The addition caused full columnar-to-equiaxed grain transition (CET) and significant grain refinement. The inter-dendritic regions and grain boundaries (GBs) of the as-fabricated sample were segregated with Cr and C

which led to the formation of an FCC belt/network structure along GBs. The grain interior was dominated by BCC/B2 and sporadically decorated by Cr

particles. The partitioning of Cr and C into liquid ahead of the solidification front

which may have generated significant constitutional supercooling

is believed to be responsible for the full CET.

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a National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong University Shanghai People’s Republic of China

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