Effects of long-term aging at 1070 °C on microstructure of Ni 3Al-base single-crystal alloy IC6SX

Ming Li; Jinxia Song; Shusuo Li; Yafanga Han

doi:10.1007/s12598-011-0300-y

Effects of long-term aging at 1070 °C on microstructure of Ni ₃Al-base single-crystal alloy IC6SX

Ming Li^*
, Jinxia Song
, Shusuo Li
, Yafanga Han

^*Corresponding author for this work

Research institute of Aero-Engine

Beijing Institute of Aeronautical Materials

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The effects of long-term aging at 1070 °C for periods of 100 h to 1500 h on microstructure of Ni ₃Al-base single-crystal alloy IC6SX were examined by SEM, EDX and TEM. Results show that alloy IC6SX undergoes following microstructure changes during long-term aging: A large number of rod-like Y-NiMo phases and carbides precipitate, and more of them appear in the interdendritic areas than in the dendritic arms; γ-phase aggregate and coarsen, and no longer show a continuous network-like distribution; adjacent y' phases grow bigger and become connected with each other; some larger sized y' phases are discovered in the dendritic arms; after aging for 300 h, γ phases amid a row of adjacent y' phases dissolve to form a y' band, and during further aging, ? phases beside the y' band grow wider and finally occupy the y' band, where a γ band is formed; a small portion of Y-NiMo phases are found to re-dissolve to form gamma; phases after aging for 1500 h.

Original language	English
Pages (from-to)	345-348
Number of pages	4
Journal	Rare Metals
Volume	30
Issue number	SUPPL.1
DOIs	https://doi.org/10.1007/s12598-011-0300-y
State	Published - Mar 2011

Keywords

IC6SX
Long-term aging
Microstructure
Ni Al
Oxides

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title = "Effects of long-term aging at 1070 °C on microstructure of Ni 3Al-base single-crystal alloy IC6SX",

abstract = "The effects of long-term aging at 1070 °C for periods of 100 h to 1500 h on microstructure of Ni 3Al-base single-crystal alloy IC6SX were examined by SEM, EDX and TEM. Results show that alloy IC6SX undergoes following microstructure changes during long-term aging: A large number of rod-like Y-NiMo phases and carbides precipitate, and more of them appear in the interdendritic areas than in the dendritic arms; γ-phase aggregate and coarsen, and no longer show a continuous network-like distribution; adjacent y' phases grow bigger and become connected with each other; some larger sized y' phases are discovered in the dendritic arms; after aging for 300 h, γ phases amid a row of adjacent y' phases dissolve to form a y' band, and during further aging, ? phases beside the y' band grow wider and finally occupy the y' band, where a γ band is formed; a small portion of Y-NiMo phases are found to re-dissolve to form gamma; phases after aging for 1500 h.",

keywords = "IC6SX, Long-term aging, Microstructure, Ni Al, Oxides",

author = "Ming Li and Jinxia Song and Shusuo Li and Yafanga Han",

year = "2011",

month = mar,

doi = "10.1007/s12598-011-0300-y",

language = "英语",

volume = "30",

pages = "345--348",

journal = "Rare Metals",

issn = "1001-0521",

publisher = "John Wiley and Sons Inc",

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}

TY - JOUR

T1 - Effects of long-term aging at 1070 °C on microstructure of Ni 3Al-base single-crystal alloy IC6SX

AU - Li, Ming

AU - Song, Jinxia

AU - Li, Shusuo

AU - Han, Yafanga

PY - 2011/3

Y1 - 2011/3

N2 - The effects of long-term aging at 1070 °C for periods of 100 h to 1500 h on microstructure of Ni 3Al-base single-crystal alloy IC6SX were examined by SEM, EDX and TEM. Results show that alloy IC6SX undergoes following microstructure changes during long-term aging: A large number of rod-like Y-NiMo phases and carbides precipitate, and more of them appear in the interdendritic areas than in the dendritic arms; γ-phase aggregate and coarsen, and no longer show a continuous network-like distribution; adjacent y' phases grow bigger and become connected with each other; some larger sized y' phases are discovered in the dendritic arms; after aging for 300 h, γ phases amid a row of adjacent y' phases dissolve to form a y' band, and during further aging, ? phases beside the y' band grow wider and finally occupy the y' band, where a γ band is formed; a small portion of Y-NiMo phases are found to re-dissolve to form gamma; phases after aging for 1500 h.

AB - The effects of long-term aging at 1070 °C for periods of 100 h to 1500 h on microstructure of Ni 3Al-base single-crystal alloy IC6SX were examined by SEM, EDX and TEM. Results show that alloy IC6SX undergoes following microstructure changes during long-term aging: A large number of rod-like Y-NiMo phases and carbides precipitate, and more of them appear in the interdendritic areas than in the dendritic arms; γ-phase aggregate and coarsen, and no longer show a continuous network-like distribution; adjacent y' phases grow bigger and become connected with each other; some larger sized y' phases are discovered in the dendritic arms; after aging for 300 h, γ phases amid a row of adjacent y' phases dissolve to form a y' band, and during further aging, ? phases beside the y' band grow wider and finally occupy the y' band, where a γ band is formed; a small portion of Y-NiMo phases are found to re-dissolve to form gamma; phases after aging for 1500 h.

KW - IC6SX

KW - Long-term aging

KW - Microstructure

KW - Ni Al

KW - Oxides

UR - https://www.scopus.com/pages/publications/84862968998

U2 - 10.1007/s12598-011-0300-y

DO - 10.1007/s12598-011-0300-y

M3 - 文章

AN - SCOPUS:84862968998

SN - 1001-0521

VL - 30

SP - 345

EP - 348

JO - Rare Metals

JF - Rare Metals

IS - SUPPL.1

ER -

Effects of long-term aging at 1070 °C on microstructure of Ni ₃Al-base single-crystal alloy IC6SX

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Keywords

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