NANOCRYSTAL MATERIALS WITH A THERMALLY STABLE STRUCTURE

Dovydenkov Vladislav Andreevich, Candidate of engineering sciences, president of joint-stock company «Cermet materials factory «Metma» (Mari El rep., Yoshkar Ola), metma@yoshkar-ola.ru
Yarmolyk Milana Vladimirovna, Mechanical engineer, joint-stock company «Cermet materials factory «Metma» (Mari El rep., Yoshkar Ola), metma@yoshkar-ola.ru
Buyev Andrey Romanovich, Doctor of engineering sciences, professor, dean of physico-mathematical department, Mari State University (Mari El rep., Yoshkar Ola), Ulenspigel@mail.ru
Leukhin Aleksandr Viktorovich, Candidate of physico-mathematical sciences, head of sub-department of general physics, Mari State University, (Mari El rep., Yoshkar Ola), Ulenspigel@mail.ru
Sazonov Andrey Rudolfovich, Senior staff, sub-department of physics, Mari State University (Mari El rep., Yoshkar Ola), Ulenspigel@mail.ru.

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Materials obtained from Cu–CuО–Al–C compositions using reaction milling and subsequent annealing were studied. It was demonstrated that owing to solid phase interactions initiated by strain under reaction milling and thermally activated under annealing, the materials with matrix metal grain size of 150–300 nm with located at the boundaries YAl₂O₃ phase inclusions of 30–60 nm can be obtained. Such a structure is thermally stable and it is not subject to recrystallization under the temperature of up to 860 °С.

reaction, milling, annealing, solid phase interactions, re-crystallization, nanocrystallite.