Additive laser deposition of compositionally graded NiCrAlY-YSZ multi-materials on IN625-NiCrAlY substrate

Savitha, U.; Reddy, G. Jagan; Singh, Vajinder; Gokhale, A.M.; Sundararaman, M.

doi:10.1016/j.matchar.2020.110317

Materials Characterization

2020

DOI: 10.1016/j.matchar.2020.110317

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Additive laser deposition of compositionally graded NiCrAlY-YSZ multi-materials on IN625-NiCrAlY substrate

U. Savitha¹,

G. Jagan Reddy

Vajinder Singh

et al.

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Cited by 12 publications

References 19 publications

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Tensile Properties and Coefficient of Thermal Expansion of Laser Powder Bed Fusion Fabricated IN718‐YSZ Compositionally Graded Composite

Parnaik,

Tiwari,

Chakkravarthy

et al. 2024

Adv Eng Mater

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The microstructure, tensile properties, and thermal expansion characteristics of a laser powder bed fusion (LPBF) manufactured compositionally graded composite with 0.5–8 wt% yttria‐stabilized zirconia (YSZ) reinforced Inconel 718 are investigated. Along the composition gradient, which is perpendicular to the build direction, in all cross sections, the YSZ segregates at the melt‐pool boundaries and the IN718 matrix has randomly oriented equiaxed grains. Cross sections with >2 wt% YSZ contain significant porosity (>2%) and solidification cracks, which reduces their strength and ductility significantly. In the section with 1.5 wt% YSZ, the YS, UTS, and ductility are 819 ± 30, 1008 ± 40, and 7.4 ± 0.4 MPa, which matches well with that of LPBF fabricated YSZ‐free IN718. Dilatometry measurements on sections with 0.5–1.5 wt% YSZ in the temperature range of 25–1200 °C indicate that their coefficient of thermal expansion (CTE) is intermediate to that of IN718 and YSZ. Finally, the variations in CTE with temperature are discussed in detail by considering the microstructural evolution in the composite with changes in temperature.

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Tensile Properties and Coefficient of Thermal Expansion of Laser Powder Bed Fusion Fabricated IN718‐YSZ Compositionally Graded Composite

Parnaik,

Tiwari,

Chakkravarthy

et al. 2024

Adv Eng Mater

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Mechanical Properties and Residual Stress Depth Profiles of Plasma Sprayed Ceramic Coatings Deposited Under Comparable Particle Temperature and Velocity

Ghara

Bandyopadhyay

2022

J Therm Spray Tech

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Critical review of the state of the art in multi-material fabrication via directed energy deposition

Feenstra

Banerjee

Fraser

et al. 2021

Current Opinion in Solid State and Materials Science

102

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Additive laser deposition of compositionally graded NiCrAlY-YSZ multi-materials on IN625-NiCrAlY substrate

Cited by 12 publications

References 19 publications

Tensile Properties and Coefficient of Thermal Expansion of Laser Powder Bed Fusion Fabricated IN718‐YSZ Compositionally Graded Composite

Tensile Properties and Coefficient of Thermal Expansion of Laser Powder Bed Fusion Fabricated IN718‐YSZ Compositionally Graded Composite

Mechanical Properties and Residual Stress Depth Profiles of Plasma Sprayed Ceramic Coatings Deposited Under Comparable Particle Temperature and Velocity

Critical review of the state of the art in multi-material fabrication via directed energy deposition

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