Electron-ion plasma modification of Al-based alloys; AIP Conference Proceedings; Vol. 1698 : Advanced Materials in Technology and Construction, AMTC-2015

Electron-ion plasma modification of Al-based alloys; AIP Conference Proceedings; Vol. 1698 : Advanced Materials in Technology and Construction, AMTC-2015

Xehetasun bibliografikoak
Parent link:AIP Conference Proceedings
Vol. 1698 : Advanced Materials in Technology and Construction, AMTC-2015.— 2016.— [030012, 8 p.]
Erakunde egilea: Национальный исследовательский Томский политехнический университет
Beste egile batzuk: Ivanov Yu. F. Yuriy Fedorovich, Gracheva M. E. Mariya Evgenjevna, Petrikova E. A. Elizaveta Alekseevna, Krysina O. V. Olga Vasiljevna, Teresov A. D. Anton Dmitrievich, Ivanova O. V. Olga Viktorovna, Ikonnikova I. A. Irina Aleksandrovna
Gaia:Title screen
The paper reports on the study where we analyzed the surface structure and strength properties of coated Al alloys modified by electron-ion plasma treatment. The Al alloys were deposited with a thin (?0.5 ?m) TiCu film coating (TiCu-Al system) and with a hard TiCuN coating (TiCuN–AlSi system) on a TRIO vacuum setup in the plasma of low-pressure arc discharges. The temperature fields and phase transformations in the film–substrate system were estimated by numerical simulation in a wide range of electron energy densities (5–30?J/cm2) and pulse durations (50–200 ?s). The calculations allowed us to determine the threshold energy density and pulse duration at which the surface structure of the irradiated Al-based systems is transformed in a single-phase state (solid or liquid) and in a two-phase state (solid plus liquid). The elemental composition, defect structure, phase state, and lattice state in the modified surface layers were examined by optical, scanning, and transmission electron microscopy, and by X-ray diffraction analysis. The mechanical characteristics of the modified layers were studied by measuring the hardness and Young’s modulus. The tribological properties of the modified layers were analyzed by measuring the wear resistance and friction coefficient. It is shown that melting and subsequent high-rate crystallization of the TiCu–Al system makes possible a multiphase Al-based surface structure with the following characteristics: crystallite size ranging within micrometer, microhardness of more than 3 times that in the specimen bulk, and wear resistance ?1.8 times higher compared to the initial material. Electron beam irradiation of the TiCuN–AlSi system allows fusion of the coating into the substrate, thus increasing the wear resistance of the material ?2.2 times at a surface hardness of ?14 GPa.
Режим доступа: по договору с организацией-держателем ресурса
Hizkuntza:ingelesa
Argitaratua: 2016
Gaiak:
электронный ресурс
труды учёных ТПУ
Sarrera elektronikoa:http://dx.doi.org/10.1063/1.4937834
Formatua: Baliabide elektronikoa Liburu kapitulua
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647403

Antzeko izenburuak

Antzeko izenburuak