Hot cracking, crystal orientation and compressive strength of an equimolar CoCrFeMnNi high-entropy alloy printed by selective laser melting

Niu, Pengda; Li, Ruidi; Zhu, Shuya; Wang, Minbo; Chen, Chao; Yuan, Tiechui

doi:10.1016/j.optlastec.2020.106147

Cited by 77 publications

(17 citation statements)

References 44 publications

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“…Niu et al evaluated the compressive strength of an equimolar SLM CoCrFeMnNi HEA. [ 109 ] The printed specimens always suffered from hot cracking regardless of the printing parameters. The maximum compressive strength obtained was 2447.7 MPa, with an elongation rate of 77.6%.…”

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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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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“…HEAs fabricated using SLM exhibited outstanding strength and ductility superior to their conventionally fabricated and post-processed counterpart and comparable to the conventional materials such as stainless steel [351,356,[369][370][371][372]. The tensile and compressive strength of CoCrFeMnNi HEA has been investigated by many researchers [356,[372][373][374][375]. Yield strength in the range of 500-700 MPa and strain of 40-70% was reported.…”

Section: Laser-processed Heasmentioning

confidence: 99%

Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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Additive manufacturing (AM) as a disruptive technology has received much attention in recent years. In practice, however, much effort is focused on the AM of polymers. It is comparatively more expensive and more challenging to additively manufacture metallic parts due to their high temperature, the cost of producing powders, and capital outlays for metal additive manufacturing equipment. The main technology currently used by numerous companies in the aerospace and biomedical sectors to fabricate metallic parts is powder bed technology, in which either electron or laser beams are used to melt and fuse the powder particles line by line to make a three-dimensional part. Since this technology is new and also sought by manufacturers, many scientific questions have arisen that need to be answered. This manuscript gives an introduction to the technology and common materials and applications. Furthermore, the microstructure and quality of parts made using powder bed technology for several materials that are commonly fabricated using this technology are reviewed and the effects of several process parameters investigated in the literature are examined. New advances in fabricating highly conductive metals such as copper and aluminum are discussed and potential for future improvements is explored.

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“…Under certain circumstances, AM gives a better control over the material processing and helps tailor application-specific microstructures which become more important for the parts for applications under extreme environments. For example, it was demonstrated that fine and tailorable microstructures in HEAs were obtained using AM techniques [162][163][164][165][166][167][168][169], which implies AM can improve the mechanical performance of at least some HEAs. However, this may not be a trivial task as a good understanding of the AM technique and material behavior during the AM process is required [170].…”

Section: Additive Manufacturing Of Heasmentioning

confidence: 99%

“…Apart from SPS, SLM is the most widely studied AM technique for HEAs . HEAs that were successfully fabricated by SLM include CoCrFeNiMn [153,154,169,[176][177][178][179][180][181][182][183][184][185]188,[202][203][204][205][206]209,212,214,215,217,220,221], AlCrFeNiV [193], AlCoCrFeNi [170,190], Al-CoCrCuFeNi [194], CoCrFeNi [98,155,186,187,189,208,213,222], CoCr 2.5 FeNi 2 TiW 0.5 [223],…”

Section: Additive Manufacturing Of Heasmentioning

confidence: 99%

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

Sonal

Lee

2021

Metals

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Alloying has been very common practice in materials engineering to fabricate metals of desirable properties for specific applications. Traditionally, a small amount of the desired material is added to the principal metal. However, a new alloying technique emerged in 2004 with the concept of adding several principal elements in or near equi-atomic concentrations. These are popularly known as high entropy alloys (HEAs) which can have a wide composition range. A vast area of this composition range is still unexplored. The HEAs research community is still trying to identify and characterize the behaviors of these alloys under different scenarios to develop high-performance materials with desired properties and make the next class of advanced materials. Over the years, understanding of the thermodynamics theories, phase stability and manufacturing methods of HEAs has improved. Moreover, HEAs have also shown retention of strength and relevant properties under extreme tribological conditions and radiation. Recent progresses in these fields are surveyed and discussed in this review with a focus on HEAs for use under extreme environments (i.e., wear and irradiation) and their fabrication using additive manufacturing.

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Hot cracking, crystal orientation and compressive strength of an equimolar CoCrFeMnNi high-entropy alloy printed by selective laser melting

Cited by 77 publications

References 44 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

Review of Powder Bed Fusion Additive Manufacturing for Metals

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

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