Thermal shock resistance of a NiCrAlY-coated Alloy 625 system produced by laser powder bed fusion

This document provides details on the files available for download in the dataset "Variation of Surface Texture in Laser Powder Bed Fusion of Nickel Super Alloy 625." The following sections provide details on the experiments, methods, and data files. The experiment detailed in this document methodically varies part position and surface orientation relative to the build plate and relative to the recoater blade. This dataset provides surface height data for analysis and development of correlations by the greater research.

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Predictive modeling and optimization of multi-track processing for laser powder bed fusion of nickel alloy 625

Additive Manufacturing ◽

10.1016/j.addma.2016.11.004 ◽

2017 ◽

Vol 13 ◽

pp. 14-36 ◽

Cited By ~ 21

Author(s):

Luis E. Criales ◽

Yiğit M. Arısoy ◽

Brandon Lane ◽

Shawn Moylan ◽

Alkan Donmez ◽

...

Keyword(s):

Nickel Alloy ◽

Predictive Modeling ◽

Powder Bed Fusion ◽

Laser Powder Bed Fusion ◽

Powder Bed ◽

Modeling And Optimization ◽

Alloy 625

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PREPARATION OF MICROARC OXIDATION COATINGS ON 6061 ALUMINUM ALLOYS AND THEIR THERMAL SHOCK RESISTANCE

Surface Review and Letters ◽

10.1142/s0218625x09012779 ◽

2009 ◽

Vol 16 (03) ◽

pp. 393-399 ◽

Cited By ~ 1

Author(s):

WENBIN XUE ◽

YING ZHANG ◽

XINGLI JIANG ◽

ZHUO YANG

Keyword(s):

Aluminum Alloys ◽

Thermal Shock ◽

Thermal Shock Resistance ◽

Microarc Oxidation ◽

Alloy Coating ◽

Ceramic Coatings ◽

Phase Constituent ◽

Thick Coating ◽

Coated Alloy ◽

Shock Resistance

The thick ceramic coatings were prepared on 6061 aluminum alloys by microarc oxidation in a silicate electrolyte. The morphology and phase constituent of the coatings with different thickness were studied by scanning electron microscope, and X-ray diffraction. Scratch and thermal shock tests were employed to evaluate the adhesion between the coating and alloy substrate. The maximum microhardness and its position away from alloy/coating interface increases with increasing the coating thickness. The critical scratch force for the coating break was about 55 N in the 50 μm thick coating. Thermal shock resistance of the coatings depend on their thickness and thinner coating has better thermal shock resistance. The coated alloy with 50 μm thick coating can be subjected to 50 times thermal cycles of heating up to 500°C followed by quenching into water.

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Microstructure and Selective Corrosion of Alloy 625 Obtained by Means of Laser Powder Bed Fusion

Materials ◽

10.3390/ma12111742 ◽

2019 ◽

Vol 12 (11) ◽

pp. 1742 ◽

Cited By ~ 4

Author(s):

Marina Cabrini ◽

Sergio Lorenzi ◽

Cristian Testa ◽

Fabio Brevi ◽

Sara Biamino ◽

...

Keyword(s):

Heat Treatment ◽

Intergranular Corrosion ◽

Powder Bed Fusion ◽

Laser Powder Bed Fusion ◽

Powder Bed ◽

Alloy 625 ◽

Heat Treated ◽

Selective Corrosion ◽

Corrosion Susceptibility ◽

Acid Test

The effect of microstructure on the susceptibility to selective corrosion of Alloy 625 produced by laser powder bed fusion (LPBF) process was investigated through intergranular corrosion tests according to ASTM G28 standard. The effect of heat treatment on selective corrosion susceptibility was also evaluated. The behavior was compared to commercial hot-worked, heat treated Grade 1 Alloy 625. The morphology of attack after boiling ferric sulfate-sulfuric acid test according to ASTM G28 standard is less penetrating for LPBF 625 alloy compared to hot-worked and heat-treated alloy both in as-built condition and after heat treatment. The different attack morphology can be ascribed to the oversaturation of the alloying elements in the nickel austenitic matrix obtained due to the very high cooling rate. On as-built specimens, a shallow selective attack of the border of the melt pools was observed, which disappeared after the heat treatment. The results confirmed similar intergranular corrosion susceptibility, but different corrosion morphologies were detected. The results are discussed in relation to the unique microstructures of LPBF manufactured alloys.

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