Journal ArticleDOI
Hierarchical microstructure and strengthening mechanisms of a CoCrFeNiMn high entropy alloy additively manufactured by selective laser melting
Z.G. Zhu,Q.B. Nguyen,F.L. Ng,Xianghai An,Xiaozhou Liao,Peter K. Liaw,Sharon Mui Ling Nai,Jun Wei +7 more
TLDR
In this paper, a near-fully dense CoCrFeNiMn high entropy alloy was additively manufactured by selective laser melting successfully, and the as-built samples exhibit a hierarchical structure, including melt pools, columnar grains, sub-micron cellular structures, and dislocations.About:
This article is published in Scripta Materialia.The article was published on 2018-09-01. It has received 369 citations till now. The article focuses on the topics: Strengthening mechanisms of materials & Strain hardening exponent.read more
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Selective laser melting of an equiatomic CoCrFeMnNi high-entropy alloy: Processability, non-equilibrium microstructure and mechanical property
TL;DR: In this article, the selective laser melting (SLM) of an equiatomic CoCrFeMnNi high-entropy alloy (HEA) powder was studied, with emphasis on its non-equilibrium microstructural evolution and mechanical properties.
Journal ArticleDOI
Recent Advances on High‐Entropy Alloys for 3D Printing
TL;DR: A comprehensive review of the recent achievements of 3D printing of HEAs is provided, in the aspects of their powder development, printing processes, microstructures, properties, and potential applications.
Journal ArticleDOI
High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties
TL;DR: In this article, the authors present an overview of the mechanical behavior of high entropy alloys with heterogeneous microstructures that reconcile the strength-ductility synergy and the ductility trade-off.
Journal ArticleDOI
An overview of tailoring strain delocalization for strength-ductility synergy
Hao Wu,Guohua Fan +1 more
TL;DR: In this paper, the authors proposed the strategy of tailoring strain delocalization to evade long-standing strength-ductility trade-off dilemma, where the achieving of strengthductility synergy depends on the delocalizing of localized strains.
Journal ArticleDOI
Significance of stacking fault energy in bulk nanostructured materials: Insights from Cu and its binary alloys as model systems
TL;DR: In this paper, the stacking fault energy (SFE) of materials is considered as one of the most crucial factors primarily controlling which deformation mechanism plays an overwhelming role in accommodating the plasticity, and a profound understanding of the vital significance of SFE in NS materials can extend and enrich our comprehension of their structure-property relationship.
References
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A critical review of high entropy alloys and related concepts
Daniel B. Miracle,Oleg N. Senkov +1 more
TL;DR: High entropy alloys (HEAs) are barely 12 years old as discussed by the authors, and the field has stimulated new ideas and inspired the exploration of the vast composition space offered by multi-principal element alloys.
Journal ArticleDOI
Metal Additive Manufacturing: A Review
TL;DR: The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.
Journal ArticleDOI
A fracture-resistant high-entropy alloy for cryogenic applications
Bernd Gludovatz,Anton Hohenwarter,Dhiraj Catoor,Edwin H. Chang,Easo P. George,Easo P. George,Robert O. Ritchie,Robert O. Ritchie +7 more
TL;DR: This work examined a five-element high-entropy alloy, CrMnFeCoNi, which forms a single-phase face-centered cubic solid solution, and found it to have exceptional damage tolerance with tensile strengths above 1 GPa and fracture toughness values exceeding 200 MPa·m1/2.
Journal ArticleDOI
Laser additive manufacturing of metallic components: materials, processes and mechanisms
TL;DR: Additive manufacturing implies layer by layer shaping and consolidation of powder feedstock to arbitrary configurations, normally using a computer controlled laser as discussed by the authors, which is based on a novel materials incremental manufacturing philosophy.
Journal ArticleDOI
Physics and phenomenology of strain hardening: the FCC case
U.F. Kocks,H. Mecking +1 more