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

Zhen Xue Shi; Jia Rong Li; Shi Zhong Liu; Jin Qian Zhao

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

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Dynamic Deformation Behavior of As-Extruded Mg-Gd-Y Magnesium Alloy and the Microstructural Evolution
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Microstructures of Low Angle Boundaries of the Second Generation Single Crystal Superalloy DD6
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Microstructures of Low Angle Boundaries of the...

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

Abstract:

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)

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1584-1587

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.284-286.1584

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Online since:

July 2011

Authors:

Zhen Xue Shi, Jia Rong Li, Shi Zhong Liu, Jin Qian Zhao

Keywords:

DD6, Low Angle Boundaries, Microstructure, Single Crystal Superalloy

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