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Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy
Alternative TitleIntergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy
Gao Shuang; Zhou Yizhou; Liu Zhiquan; Jin Tao
2018
Source PublicationJournal of Materials Science & Technology
ISSN1005-0302
Volume34Issue:5Pages:806-810
AbstractPrecipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 °C, a new intergrowth structure called C phase was found within μ phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as μ phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 °C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than μ phase above 1150 °C that leads to an intergrowth pathway from μ phase to C phase.
Other AbstractPrecipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 ?C, a new intergrowth structure called C phase was found within μ phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as μ phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 ?C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than μ phase above 1150 ?C that leads to an intergrowth pathway from μ phase to C phase.
KeywordNi-base superalloy Phase transformation Precipitation
Indexed ByCSCD
Language英语
CSCD IDCSCD:6240454
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152212
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Gao Shuang,Zhou Yizhou,Liu Zhiquan,et al. Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy[J]. Journal of Materials Science & Technology,2018,34(5):806-810.
APA Gao Shuang,Zhou Yizhou,Liu Zhiquan,&Jin Tao.(2018).Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy.Journal of Materials Science & Technology,34(5),806-810.
MLA Gao Shuang,et al."Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy".Journal of Materials Science & Technology 34.5(2018):806-810.
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