Effect of building direction and heat treatment on mechanical properties of Inconel 939 prepared by additive manufacturing

Article Materials Science, Multidisciplinary

Alloys-by-design: Application to new superalloys for additive manufacturing

Yuanbo T. Tang et al.

Summary: New grades of gamma/gamma' nickel-based superalloy for the additive manufacturing process were designed using computational approaches, with processing trials carried out using powder-based selective laser melting. The superior processability and mechanical behaviour of the new alloys were demonstrated through microstructural characterisation, calorimetry and hot tensile testing. Suggestions for refinements to the modelling approach were also made.

ACTA MATERIALIA (2021)

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Article Chemistry, Physical

Microstructures and mechanical properties evolution of IN939 alloy during electron beam selective melting process

Yang Li et al.

Summary: This study investigated the microstructure and mechanical properties of defect-free IN939 superalloy specimens prepared using the EBSM method. It was found that higher yield strengths were obtained at the top of the fabricated specimens, and posttreatment was adopted to homogenize the gradient microstructure. Fracture analyses after the tensile test demonstrated the effects of different strengthening phases on the fracture behavior.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Review Materials Science, Multidisciplinary

Additive manufacturing of structural materials

Guo Liu et al.

Summary: Over the past 30 years, 3D printing technology has seen rapid development and widespread adoption, with a trade-off between printing resolution and scalability/speed. Various materials have great potential for application in additive manufacturing, driving rapid and tremendous development of materials and methods.

MATERIALS SCIENCE & ENGINEERING R-REPORTS (2021)

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Review Engineering, Manufacturing

Powder Bed Fusion of nickel-based superalloys: A review

Salome Sanchez et al.

Summary: Powder Bed Fusion (PBF) techniques offer high design flexibility and are attractive for manufacturing high-performance materials like nickel-based superalloys. A comprehensive review of the mechanical properties of PBF nickel-based superalloys, including their microstructure and process parameters, is provided in this paper to aid practitioners in identifying research opportunities. The study concludes with summaries of data on mechanical properties and discussions on process factors influencing functional performance.

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE (2021)

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Article Nanoscience & Nanotechnology

Surface relief evolution and fatigue crack initiation in Rene 41 superalloy cycled at room temperature

T. Babinsky et al.

Summary: The study focused on the surface relief evolution and fatigue crack initiation of Rene'41 superalloy, revealing the crucial role of persistent slip markings in fatigue crack initiation at room temperature.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

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News Item Multidisciplinary Sciences