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

被引：13
|
作者：
Gancarczyk, Kamil [1 ,2 ]
Zubko, Maciej [3 ,4 ]
Hanc-Kuczkowska, Aneta [3 ]
Koscielniak, Barbara [1 ,2 ]
Albrecht, Robert [3 ]
Szeliga, Dariusz [1 ,2 ]
Motyka, Maciej [1 ,2 ]
Ziaja, Waldemar [1 ,2 ]
Sieniawski, Jan [1 ,2 ]
机构：
[1] Rzeszow Univ Technol, Fac Mech Engn & Aeronaut, Dept Mat Sci, 12 Powstancow Warszawy Ave, PL-35959 Rzeszow, Poland
[2] Rzeszow Univ Technol, Res & Dev Lab Aerosp Mat, 4 Zwirki Wigury Str, PL-35036 Rzeszow, Poland
[3] Univ Silesia, Inst Mat Sci, 1a 75 Pulku Piechoty Str, PL-41500 Chorzow, Poland
[4] Univ Hradec Kralove, Dept Phys, Rokitanshego 62-26 Str, Hradec Kralove 50003, Czech Republic
来源：
MATERIALS | 2019年 / 12卷 / 20期
关键词：
nickel-based superalloy; CMSX-4; single crystal (SX); crystal structure perfection; creep resistance; GRAIN-STRUCTURE; LATTICE MISFIT; SOLIDIFICATION; ORIENTATION;
D O I：
10.3390/ma12203422
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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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页数：14
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