The Effect of Withdrawal Rate on Crystal Structure Perfection, Microstructure and Creep Resistance of Single Crystal Castings Made of CMSX-4 Nickel-Based Superalloy.

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ID: 84385
2019
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Abstract
This study focuses on the evaluation of the crystal structure perfection in the single crystal made of CMSX-4 nickel superalloy and its effect on creep resistance. Single crystal castings were manufactured by directional solidification process at the withdrawal rate of 1, 3, 5 and 7 mm/min. Light (LM) and electron (SEM, TEM) microscopy, X-ray diffraction and Mossbauer spectroscopy were used for evaluation of the microstructure and crystal structure perfection. Castings were also subjected to creep tests. The best creep resistance was obtained for the casting manufactured at the withdrawal rate of 3 mm/min, characterized by the highest crystal structure perfection compared to the other castings examined.
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Authors Gancarczyk, Kamil;Zubko, Maciej;Hanc-Kuczkowska, Aneta;Kościelniak, Barbara;Albrecht, Robert;Szeliga, Dariusz;Motyka, Maciej;Ziaja, Waldemar;Sieniawski, Jan;
Journal Materials (Basel, Switzerland)
Year 2019
DOI E3422
URL
Keywords
cmsx-4 creep resistance crystal structure perfection nickel-based superalloy single crystal (sx)

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