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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 278Some Deformation Micromechanisms in Ni-Based...

Some Deformation Micromechanisms in Ni-Based Superalloys Evidenced Using TEM In Situ Experiments

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Abstract:

In situ straining of microsamples have been carried out at different temperatures in a transmission electron microscope (TEM) to provide information about the elementary micromechanisms, which control the deformation in Ni-based superalloys at the nano and microscopic scales. The obstacles to the propagation of the dislocations have been identified and quantified when possible. The strengthening effect in the -matrix channels and the shearing of ' precipitates have been chosen to illustrate some results deduced from moving dislocation analysis. A quantitative evaluation of the stresses acting on dislocations has been performed. The shearing process of the ' precipitates at 850°C has been precisely analysed.

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Euro Superalloys 2010

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Periodical:

Advanced Materials Research (Volume 278)

Pages:

90-95

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.278.90

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Online since:

July 2011

Authors:

Florence Pettinari-Sturmel, Mustafa Benyoucef, Joël Douin, Pierre Caron, Didier Locq, Nicole Clément, Armand Coujou

Keywords:

Deformation Micromechanisms, Moving Dislocation, TEM In Situ

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