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Particles of a second phase on grain boundaries and free surface in copper-based solid solutions with iron were observed. Previously the samples were tested on diffusion creep for surface free energy measurements. The test method is based on measuring of time dependences of stress in foils. The stresses were low (up to 300kPa) and most of time the foils were balancing around zero stress. Experiments...
The activation energy of diffusional creep in copper–iron solid solutions was studied. Experiments were performed on foil samples in an atmosphere of dry hydrogen in a temperature range from about 1170–1340K. The foils had a thickness of 1.8×10−5m and a length of about 0.15m. The stress range was from 0 to 300kPa. The method of the measurements was developed in our previous work and it was based on...
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