Tensile Fracture Characteristics of a Single Crystal Nickel-Based Superalloy

Dan Wu; Li Xi Tian; Chao Li Ma

doi:10.4028/www.scientific.net/AMR.922.819

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 922Tensile Fracture Characteristics of a Single...

Tensile Fracture Characteristics of a Single Crystal Nickel-Based Superalloy

Abstract:

Tensile fracture behavior of a single crystal nickel-based superalloy with different orientations and temperatures was studied. The tensile fracture surfaces and microstructure were analyzed by field emission scanning electron microscope (FE-SEM). The results showed that, generally, this single crystal nickel-based superalloy exhibited obvious tensile anisotropy. Under the condition of room temperature, the different areas of crack nucleation, propagation and final fracture area were clearly observed and varied greatly in different orientations. At elevated temperature, the fracture surface presented mixed characteristics of holes and dimples and its fracture was dominated by micro-void coalescence. Fracture mechanism was discussed.

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Periodical:

Advanced Materials Research (Volume 922)

Pages:

819-825

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.922.819

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Online since:

May 2014

Authors:

Dan Wu*, Li Xi Tian, Chao Li Ma

Keywords:

Orientation, Temperature, Tensile Fractography

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