Publications by authors named "Asset Sapar"
Article Synopsis
- This study investigated how irradiation from krypton and helium ions affects the structure and composition of high-entropy alloys (HEAs) at room temperature, specifically CoCrFeNi and CoCrFeMnNi.
- Findings showed that while elemental distribution remained stable, blisters formed on nickel surfaces due to the irradiation process, with large ones averaging 3.8 μm in diameter.
- The research noted significant changes in lattice parameters, stress levels (compressive and tensile), and dislocation densities in the HEAs post-irradiation, indicating differences in material responses between the two alloys.
The paper presents the results of studying the structure and phase state of tungsten and tungsten-copper alloy after pulsed action of compression plasma flows and irradiation with helium ions. The compression plasma flows were used to modify the surface layer of tungsten, as well as to create an alloy based on tungsten and copper. Using scanning electron microscopy and X-ray structural analysis, the formation of radiation defects on the tungsten surface was detected in the form of local areas of exfoliation and destruction, which begin to form at helium ion irradiation doses of 2 × 10 cm.
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- * The study examined changes in their structure and surface morphology after irradiation, revealing the development of a porous surface with microchannels, and noted that CoCrFeMnNi had smaller blister sizes compared to CoCrFeNi.
- * Results showed that while elemental compositions remained stable under high temperatures, CoCrFeMnNi demonstrated better radiation resistance by forming compressive macrostresses and a higher dislocation density compared to CoCrFeNi.