Linear patterning of high entropy alloy by additive manufacturing

Karimi, J.; Ma, Peijun; Jia, Yandong; Prashanth, K.G.

doi:10.1016/j.mfglet.2020.03.003

Cited by 46 publications

(9 citation statements)

References 48 publications

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“…HEAs are recently emerging as potential candidates in applications with extreme environments (e.g., nuclear, hydrogen storage, electromagnetic shielding, rocketry). [ 92 ] HEAs are generally formed by mixing five or more multiprincipal elements in equimolar or near‐equimolar ratios. [ 93 ] When metals of relatively high melting points are used to create the alloy, they are referred to as refractory HEAs.…”

Section: Properties Of High‐entropy Alloys (Heas) Fabricated Via Slmmentioning

confidence: 99%

“…[103] SLM attracts much research attention in this field as it offers the advantage of producing complex geometries with improved functionalities. [92] SLM can also manufacture refractory HEAs as the molten pool can reach several thousand degrees instantaneously. [104] The plastic deformation of SLM HEAs depends primarily on the dislocations' motion.…”

Section: Properties Of High-entropy Alloys (Heas) Fabricated Via Slmmentioning

confidence: 99%

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A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

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Section: Properties Of High‐entropy Alloys (Heas) Fabricated Via Slmmentioning

confidence: 99%

Section: Properties Of High-entropy Alloys (Heas) Fabricated Via Slmmentioning

confidence: 99%

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Alomar

Concli

2020

Adv Eng Mater

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“…High-entropy alloys (HEAs), comprised of at least five principal elements with the atomic percentage of each element varying from 5 to 35%, have attracted increasing attention because of their appealing properties and potential applications [ 1 , 2 , 3 ]. The AlCoCrFeNi-M (M = Cu, Mn, Ti, B or Si, etc.)…”

Section: Introductionmentioning

confidence: 99%

Frictional Wear and Corrosion Behavior of AlCoCrFeNi High-Entropy Alloy Coatings Synthesized by Atmospheric Plasma Spraying

Zhang

et al. 2020

Entropy

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High-entropy alloy coatings (HEAC) exhibit good frictional wear and corrosion resistances, which are of importance for structure materials. In this study, the microstructure, surface morphology, hardness, frictional wear and corrosion resistance of an AlCoCrFeNi high-entropy alloy coating synthesized by atmospheric plasma spraying (APS) were investigated. The frictional wear and corrosion resistance of the coating are simultaneously improved with an increase of the power of APS. The influence of the APS process on the microstructure and mechanical behavior is elucidated. The mechanisms of frictional wear and corrosion behavior of the AlCoCrFeNi HEAC are discussed in detail.

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“…This is because in the hatch overlaps, the material is melted twice and hence are exposed to slower cooling rates than in the track cores. Hence coarser microstructure is observed in the hatch overlaps and finer microstructure in the track cores like most of the SLM fabricated samples [ 56 , 57 ]. The size of the Al-Si-Fe phase significantly decreases from 11 ± 1 µm to 2.5 ± 0.5 µm.…”

Section: Resultsmentioning

confidence: 99%

Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy

Jia

et al. 2021

Materials

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The Al-20Si-5Fe-3Cu-1Mg alloy was fabricated using selective laser melting (SLM). The microstructure and properties of the as-prepared SLM, post-treated SLM, and SLM with substrate plate heating are studied. The as-prepared SLM sample shows a non-uniform microstructure with four different phases: fcc-αAl, eutectic Al-Si, Al2MgSi, and δ-Al4FeSi2. With thermal treatment, the phases become coarser and the δ-Al4FeSi2 phase transforms partially to β-Al5FeSi. The sample produced with SLM substrate plate heating shows a relatively uniform microstructure without a distinct difference between hatch overlaps and track cores. Room temperature compression test results show that an as-prepared SLM sample reaches a maximum strength (862 MPa) compared to the heat-treated (524 MPa) and substrate plate heated samples (474 MPa) due to the presence of fine microstructure and the internal stresses. The reduction in strength of the sample produced with substrate plate heating is due to the coarsening of the microstructure, but the plastic deformation shows an improvement (20%). The present observations suggest that substrate plate heating can be effectively employed not only to minimize the internal stresses (by impacting the cooling rate of the process) but can also be used to modulate the mechanical properties in a controlled fashion.

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Linear patterning of high entropy alloy by additive manufacturing

Cited by 46 publications

References 48 publications

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

A Review of the Selective Laser Melting Lattice Structures and Their Numerical Models

Frictional Wear and Corrosion Behavior of AlCoCrFeNi High-Entropy Alloy Coatings Synthesized by Atmospheric Plasma Spraying

Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy

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