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HomeMaterials Science ForumMaterials Science Forum Vol. 879Morphology Evolution of Grain Boundary Carbides in...

Morphology Evolution of Grain Boundary Carbides in Highly Twinned Inconel Alloy 600

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Abstract:

The effects of grain boundary characters on the morphology evolution of grain boundary carbides in Inconel Alloy 600 with high proportional low Σ coincidence site lattice (CSL) boundaries aged at 715 ^oC for 1-100 h were investigated by scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). During the aging process, the carbides precipitated at coherent twin (Σ3) boundaries are very few and finest within all the aging time. Bar like carbides precipitated near both sides of the incoherent twin (Σ3) boundaries, and bigger carbides than that of coherent Σ3 boundaries had been found on the incoherent Σ3 boundaries. Bar like carbides precipitated near only one side of Σ9 boundaries, and much bigger carbides than that of Σ3 boundaries have been found on the Σ9 boundaries. The morphology of carbides precipitated at Σ27 and random grain boundaries are similar, and is bigger than that of precipitated at other grain boundaries. The carbides precipitated at grain boundaries with all types grow bigger with the aging time prolonging, but their growth rates are different.

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Periodical:

Materials Science Forum (Volume 879)

Pages:

1111-1116

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.879.1111

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Online since:

November 2016

Authors:

Hui Li*, Jiao Rong Ma, Xin Rong Liu, Shuang Xia, Wen Qing Liu, Bang Xin Zhou

Keywords:

Aging Treatment, Carbides, Grain Boundary Character, Inconel Alloy 600, Precipitation Morphology

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* - Corresponding Author

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