Investigation of strengthening mechanisms in an additively manufactured Haynes 230 alloy

Yang, Bo; Shang, Zhongxia; Ding, Jie; Lopez, Jack; Jarosinski, William; Sun, Tuanqi; Richter, Nicholas A.; Zhang, Y.; Wang, H.; Zhang, X.

doi:10.1016/j.actamat.2021.117404

Cited by 57 publications

(16 citation statements)

References 64 publications

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“…According to literature investigation on all the reported laser 3D printed Haynes 230 (with or without heat treatment), the printed Haynes 230/2.5CNT specimens without heat treatment in this research exhibit the highest mechanical strength. [40,41] The fracture shapes (side views) after tensile tests for Haynes 230 and Haynes 230/2.5CNT were compared, as shown in Figure S1 (Support Information). The fracture geometry of the tested Haynes 230/2.5CNT tensile coupons showed more resistance to the applied stress than those printed with asreceived Haynes 230, which indicated the reinforcement effect of CNTs in the metal matrix.…”

Section: Resultsmentioning

confidence: 99%

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Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Bradford-Vialva

Eckerle

et al. 2022

Adv Eng Mater

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Modern aerospace applications demand the development of high‐performance components with advanced materials. The development of nanomaterial‐reinforced metal matrix composites is a practical approach to improve properties. Laser powder bed fusion (LPBF) is one of the popular additive manufacturing approaches to fabricating metal parts with complex geometric structures. This research investigates multiwalled carbon nanotube (CNT)‐reinforced nickel‐based alloy (Haynes 230) nanocomposite for property improvement. Three volumetric concentrations (0%, 2.5%, and 5%) of CNTs in the metal matrix are investigated with different printing parameters. Different characterizations are conducted on the test specimens. Results show that LPBF‐printed Haynes 230 with 2.5 vol% CNTs has higher relative density (99.36%) and less porosity compared to those printed with 5 vol% CNTs. Mechanical test results show that LPBF‐printed Haynes 230 with 2.5 vol% CNTs has the highest hardness, modulus of elasticity, yield strength, and ultimate strength than those printed with as‐received Haynes 230 powder (with 0 vol% CNTs), Haynes 230 with 5 vol% CNTs, and commercial Haynes 230 plates. The strengthening behavior of the CNTs in the metal matrix composites is discussed in this paper. The potential of CNT‐reinforced nickel‐based nanocomposites for applications requiring materials with outstanding mechanical properties, such as aerospace and defense, is demonstrated.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Bradford-Vialva

Eckerle

et al. 2022

Adv Eng Mater

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“…Overall, carbides regardless of the PBF process were noted to be mostly MC-type with a few exceptions [117,184,185]. MC-carbides are generally more stable than M 6 C and M 23 C 6 [40,186].…”

Section: Other Secondary Precipitates and Tcp Phasesmentioning

confidence: 92%

“…As mentioned earlier, most carbides formed during L-PBF and E-PBF have been reported to be of the MC type. Only a few studies show the formation of other carbides such as M 23 C 6 [117,184,185]. For example, within the Haynes 282 alloys printed via L-PBF, there are conflicting reports on carbide formation.…”

Section: Other Secondary Precipitates and Tcp Phasesmentioning

confidence: 99%

Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

et al. 2022

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Metal additive manufacturing (AM) has unlocked unique opportunities for making complex Ni-based superalloy parts with reduced material waste, development costs, and production lead times. Considering the available AM methods, powder bed fusion (PBF) processes, using either laser or electron beams as high energy sources, have the potential to print complex geometries with a high level of microstructural control. PBF is highly suited for the development of next generation components for the defense, aerospace, and automotive industries. A better understanding of the as-built microstructure evolution during PBF of Ni-based superalloys is important to both industry and academia because of its impacts on mechanical, corrosion, and other technological properties, and, because it determines post-processing heat treatment requirements. The primary focus of this review is to outline the individual phase formations and morphologies in Ni-based superalloys, and their correlation to PBF printing parameters. Given the hierarchal nature of the microstructures formed during PBF, detailed descriptions of the evolution of each microstructural constituent are required to enable microstructure control. Ni-based superalloys microstructures commonly include γ, γ′, γ′′, $$\delta$$ δ , TCP, carbides, nitrides, oxides, and borides, dependent on their composition. A thorough characterization of these phases remains challenging due to the multi-scale microstructural hierarchy alongside with experimental challenges related to imaging secondary phases that are often nanoscale and (semi)-coherent. Hence, a detailed discussion of advanced characterization techniques is the second focus of this review, to enable a more complete understanding of the microstructural evolution in Ni-based superalloys printed using PBF. This is with an expressed goal of directing the research community toward the tools necessary for a thorough investigation of the processing-microstructure-property relationships in PBF Ni-based superalloy parts to enable microstructural engineering.

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“…However, the thermal processing ATB2 shows superb work hardening ability, which can guarantee a large safety margin in engineering applications and provide possibilities for subsequent deep processing. Figure 2c shows the strength-ductility combination of the thermal-processed ATB2 compared with other reported typical nanoprecipitate-strengthened HEAs [35][36][37][38][39][40][41][42][43][44][45][46][47] with excellent room temperature strength and ductility combinations. [35][36][37][38][39][40][41][42][43][44][45][46][47] A detailed comparison reveals that the tensile strength of our ATB2 alloy shows a 50% increase compared to conventional superalloys.…”

Section: Mechanical Performancementioning

confidence: 99%

Ultrastrong High‐Ductility Ni₃₅Co₃₅Fe₁₀Al₁₀Ti₈B₂ High‐Entropy Alloy Strengthened with Super‐High Concentration L1₂ Precipitates

Zhu

Wang

et al. 2023

Adv Eng Mater

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L12 phase hardening alloys with excellent mechanical properties are of great significance for structural applications. However, low volume fractions of L12 precipitates in conventional alloys (nearly lower than 60%) tend to limit their practical usage, while the strengths of the alloys generally increase with L12 precipitation contents. Herein, a novel high‐entropy alloy (HEA) Ni35Co35Fe10Al8Ti10B2 with ultrahigh concentration L12 precipitates is successfully designed aided by the calculation of phase diagrams (CALPHAD). The volume fraction of L12 precipitates in this HEA is up to 75% and outperforms that of most of traditional superalloys. The novel L12‐strengthened Ni35Co35Fe10Al8Ti10B2 has an ultrahigh tensile yield strength of ≈1.45 GPa, ultimate tensile strength of ≈1.9 GPa, and great ductility of ≈23% at room temperature. The desirable strength–ductility combination is superior to most of conventional superalloys and reported HEAs, mainly due to the presence of ultrahigh concentration L12 precipitates that act as dislocation obstacles and the formation of numerous stacking faults and deformation twining. This work is expected to provide guidance for developing new high‐performance HEAs with an excellent combination of strength and ductility.

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Investigation of strengthening mechanisms in an additively manufactured Haynes 230 alloy

Cited by 57 publications

References 64 publications

Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

Ultrastrong High‐Ductility Ni₃₅Co₃₅Fe₁₀Al₁₀Ti₈B₂ High‐Entropy Alloy Strengthened with Super‐High Concentration L1₂ Precipitates

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Investigation of strengthening mechanisms in an additively manufactured Haynes 230 alloy

Cited by 57 publications

References 64 publications

Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Development of Carbon Nanotube‐Reinforced Nickel‐Based Nanocomposites Using Laser Powder Bed Fusion

Powder bed fusion additive manufacturing of Ni-based superalloys: a review of the main microstructural constituents and characterization techniques

Ultrastrong High‐Ductility Ni35Co35Fe10Al10Ti8B2 High‐Entropy Alloy Strengthened with Super‐High Concentration L12 Precipitates

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Product

Resources

About

Ultrastrong High‐Ductility Ni₃₅Co₃₅Fe₁₀Al₁₀Ti₈B₂ High‐Entropy Alloy Strengthened with Super‐High Concentration L1₂ Precipitates