Effect of cyclic rapid thermal loadings on the microstructural evolution of a CrMnFeCoNi high-entropy alloy manufactured by selective laser melting
By Huanting Wang, Z. G. Zhu, Hansheng Chen, A. G. Wang, J. Q. Liu, H. W. Liu, R. Zheng, S. Nai, S. Primig, S. Babu and 2 more. 2020
148 citations recorded by the source corpus.
Abstract Metallic materials produced by additive manufacturing experience complex stress and thermal gyrations along the build direction. This has the potential to produce complicated heterogeneous microstructures that may exhibit a wide variety of mechanical properties. There remains a paucity of studies on the nature and the formation mechanisms of the microstructural heterogeneity and this limits our capability for microstructural design in additively manufactured metallic materials. Here, we present an electron microscopy-based investigation of a CrMnFeCoNi high-entropy alloy produced by selective laser melting. We have focussed on a systematic investigation of the microstructural evolution along the build direction. Our results reveal a remarkable hierarchy of microstructures, including the formation of nanocrystalline grains, elemental segregation and precipitation, cellular dislocation structures, deformation twinning, and deformation-induced phase transformation. Our research clarifies the relationships amongst different features, and provides guidance for future structural manipulation of materials produced by additive manufacturing.
Subfields: Computational Mechanics, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/2cc98e44a5b59424944011d1916fa57715da3f10
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Computational Mechanics
In Mechanical Engineering
Citations in the corpus
- Material-structure-performance integrated laser-metal additive manufacturing (2021, background): “Another advantage of LDED and LPBF for HEAs lies in their capability to yield a hierarchy of microstructures including grain refinement, elemental segregation and precipitation, increased dislocation density, and deformation twinning (66, 74), thereby facilitating the microstructural and performance”