Cyclic plasticity and fatigue damage of CrMnFeCoNi high entropy alloy fabricated by laser powder-bed fusion

Jin, Minsoo; Piglione, Alessandro; Dovgyy, Bogdan; Hosseini, E.; Hooper, Paul A.; Holdsworth, S.R.; Pham, Minh‐Son

doi:10.1016/j.addma.2020.101584

Cited by 21 publications

(30 citation statements)

References 51 publications

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“…In turn, micrographs obtained in two-beam conditions (Figure 4c and d) revealed high dislocation densities at cell boundaries, with lower yet considerable dislocation 13 densities within the cell interiors. High dislocation densities in as-built LPBF alloys are widely reported and relate to rapid solidification and the associated severe thermal stresses during printing [10,11,30,35,39]. 2 together with that of the matrix.…”

Section: The White Rectangles In (A) Indicate the Locations Of Microg...mentioning

confidence: 99%

“…However, LPBF IN718 requires dedicated heat treatments due to its peculiar as-built microstructures; the design of such heat treatments relies on a thorough understanding of the relationship between the alloys' microstructure and its fatigue properties. In particular, as-built LPBF alloys feature fine sub-grain solidification cells with high dislocation densities at cell boundaries [11,[30][31][32][33], which have been shown to have a dramatic beneficial impact on the monotonic strength of LPBF alloys without affecting their ductility [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

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On the constitutive relationship between solidification cells and the fatigue behaviour of IN718 fabricated by laser powder bed fusion

Piglione

Attard

Rielli

et al. 2021

Additive Manufacturing

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Section: The White Rectangles In (A) Indicate the Locations Of Microg...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the constitutive relationship between solidification cells and the fatigue behaviour of IN718 fabricated by laser powder bed fusion

Piglione

Attard

Rielli

et al. 2021

Additive Manufacturing

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“…Cellular microstructures are a common feature in AM MPEAs, and they result from high-density dislocation tangling and/or element segregation during the rapid solidification process [51,125,126]. Yang et al [127] reported a cellular microstructure in LPBF fabricated CrFeNiMn MPEAs.…”

Section: Solidification Microstructure Of Am Mpeasmentioning

confidence: 99%

Review: Multi-principal element alloys by additive manufacturing

Ferry

Kruzic

et al. 2022

J Mater Sci

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Multi-principal element alloys (MPEAs) have attracted rapidly growing attention from both research institutions and industry due to their unique microstructures and outstanding physical and chemical properties. However, the fabrication of MPEAs with desired microstructures and properties using conventional manufacturing techniques (e.g., casting) is still challenging. With the recent emergence of additive manufacturing (AM) techniques, the fabrication of MPEAs with locally tailorable microstructures and excellent mechanical properties has become possible. Therefore, it is of paramount importance to understand the key aspects of the AM processes that influence the microstructural features of AM fabricated MPEAs including porosity, anisotropy, and heterogeneity, as well as the corresponding impact on the properties. As such, this review will first present the state-of-the-art in existing AM techniques to process MPEAs. This is followed by a discussion of the microstructural features, mechanisms of microstructural evolution, and the mechanical properties of the AM fabricated MPEAs. Finally, the current challenges and future research directions are summarized with the aim to promote the further development and implementation of AM for processing MPEAs for future industrial applications.

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“…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%

“…They have also shown that the properties of HEAs could be altered by changing the input parameters for AM process. For example, CoCrFeNiMn was manufactured with SLM by multiple researchers [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] and many of them acquired different mechanical properties for CoCrFeNiMn by changing input parameters in AM processes (refer Tables 1-3).…”

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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Cyclic plasticity and fatigue damage of CrMnFeCoNi high entropy alloy fabricated by laser powder-bed fusion

Cited by 21 publications

References 51 publications

On the constitutive relationship between solidification cells and the fatigue behaviour of IN718 fabricated by laser powder bed fusion

On the constitutive relationship between solidification cells and the fatigue behaviour of IN718 fabricated by laser powder bed fusion

Review: Multi-principal element alloys by additive manufacturing

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

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