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Article
Microstructure Evolution and Compressive Property Variation of CoCrFeNiAlx High Entropy Alloys Produced by Directional Solidification
CoCrFeNiAlx (x = 0.3, 0.6, 0.9 and 1.2, molar ratio) high-entropy alloys (HEAs) were prepared by directional solidification at the withdrawal rate of 70 µm/s and were simply referred to as Al0.3, Al0.6, Al0.9 and...
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Article
Microstructure evolution during heat treatment of superalloys loaded with different amounts of carbon
The effects of heat treatment for recovering microstructure of a Ni-based single crystal superalloy with carbon addition have been evaluated. The heat treatment resulted in increased levels of chemical homogen...
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Article
Influence of directional solidification variables on the microstructure and crystal orientation of AM3 under high thermal gradient
Solid–liquid interface morphologies of a nickel-base single crystal superalloy AM3 were investigated under high thermal gradient. The critical velocities of planar–cellular and cellular–dendritic transition we...
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Article
Effect of cooling rates on dendrite spacings of directionally solidified DZ125 alloy under high thermal gradient
The dendrite morphologies and spacings of directionally solidified DZ125 superalloy were investigated under high thermal gradient about 500 K/cm. The results reveal that, with increasing cooling rate, both the...