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Crystal Perfection Studies of Single Crystal Superalloy Turbine Blades by X-Ray Diffraction Methods

100%

Gancarczyk K., Albrecht R., Bogdanowicz W., Sieniawski J.

Acta Physica Polonica A

2016

vol. 130

issue 4

1088-1090

In the paper the crystal structure of single crystal CMSX-4 blade casts, applied in high pressure turbine of aircraft engines was analyzed. The longitudinal section of blade, cast at withdrawal rate of 3 mm/min was used as a sample. During the conducted research, following X-ray diffraction methods were applied: EFG Ω-scan, Auleytner X-ray topography and analysis of diffraction reflex profile ("rocking curve"). The authors determined crystal orientation in entire blade casts on the basis of set criterion concerning values of angle α - deviation of [001] direction from the direction of cast withdrawal. Conclusions concerning the crystal structure quality of the blade were drawn based on results from three different research methods. Local changes in crystal orientation on the surface of blade cast, also areas with significant structure defect degree and the presence of internal stresses were characterized.

Effect of Creep on Crystallographic Orientation in Single Crystal Superalloy

76%

Albrecht R., Rak J., Bogdanowicz W., Gancarczyk K., Sieniawski J., Kubiak K., Lelątko J.

Acta Physica Polonica A

2016

vol. 130

issue 4

1094-1096

The creep-rupture tests were performed on a single crystal rods made of CMSX-4 superalloy obtained at withdrawal rates of 3 and 5 mm/min. After the rupture the microstructure and fracture surface were examined and correlated with X-ray crystal rotation measurements by the Ω-scan method. The conclusions about the crystal lattice rotation during creep test were provided.

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2 Acta Physica Polonica A

2 2016

2 Albrecht R.

2 Bogdanowicz W.

2 Gancarczyk K.

2 Sieniawski J.

1 Kubiak K.

1 Lelątko J.

1 Rak J.

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Crystal Perfection Studies of Single Crystal Superalloy Turbine Blades by X-Ray Diffraction Methods

Effect of Creep on Crystallographic Orientation in Single Crystal Superalloy