Microstructures of Low Angle Boundaries of the Second Generation Single Crystal Superalloy DD6

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The specimens of low angle boundaries were machined from the second generation single crystal superalloy DD6 blades. The microstructures of low angle boundaries (LAB) were investigated from three scales of dendrite, γ′ phase and atom with optical microscopy (OM), scanning electron microscope (SEM), transition electron microscope (TEM) and high resolution transmission electrion microscopy (HREM). The results showed that on the dendrite scale LAB is interdendrite district formed by three dimensional curved face between the adjacent dendrites. On the γ′ phase scale LAB is composed by a thin layer γ phase and its bilateral imperfect cube γ′ phase. On the atom scale LAB is made up of dislocations within several atom thickness.

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Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

1584-1587

DOI:

10.4028/www.scientific.net/AMR.284-286.1584

Citation:

Z. X. Shi et al., "Microstructures of Low Angle Boundaries of the Second Generation Single Crystal Superalloy DD6", Advanced Materials Research, Vols. 284-286, pp. 1584-1587, 2011

Online since:

July 2011

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$35.00

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