Tensile Properties of Low Angle Boundaries of Single Crystal Superalloy DD6

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

doi:10.4028/www.scientific.net/MSF.706-709.2418

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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Tensile Properties of Low Angle Boundaries of...

Tensile Properties of Low Angle Boundaries of Single Crystal Superalloy DD6

Abstract:

The tensile properties of DD6 alloy with twist low angle boundaries were investigated at 760°C, 850°C and 980°C, and the misorientation angle of twist low angle boundaries of the specimens of the alloy varies from 0º to 12º. The results showed that when the angle of low angle boundaries is relatively small, it has a little effect on the tensile properties of the alloy. It is notable that effects of low angle boundaries on the tensile strength are weaker than those on the tensile elongation. The characteristic of quasi-cleavage, intergranular and dimple fracture were observed on the tensile rupture surfaces of the specimens, and the tensile fracture mechanism was discussed.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

2418-2423

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.2418

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Online since:

January 2012

Authors:

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

Keywords:

DD6, Low Angle Boundary, Single Crystal Superalloy, Tensile Properties

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