Estimation of Temperature Conductivity Coefficient Impact upon Fatigue Damage of Material; IOP Conference Series: Materials Science and Engineering; Vol. 91: VI International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, Yurga, Russia, 21-23 May 2015

Estimation of Temperature Conductivity Coefficient Impact upon Fatigue Damage of Material; IOP Conference Series: Materials Science and Engineering; Vol. 91: VI International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, Yurga, Russia, 21-23 May 2015

Bibliographic Details
Parent link:IOP Conference Series: Materials Science and Engineering
Vol. 91: VI International Scientific Practical Conference on Innovative Technologies and Economics in Engineering, Yurga, Russia, 21-23 May 2015.— 2015.— [012033, 6 p.]
Main Author: Bibik V. L. Vladislav Leonidovich
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Юргинский технологический институт (филиал) (ЮТИ) Кафедра технологии машиностроения (ТМС)
Other Authors: Galeeva A.
Summary:Title screen
In the paper we consider the peculiarities of adhesive wear of cutting tools. Simulation of heat flows in the cutting zone showed that, as thermal conduction and heat conductivity of tool material grow, the heat flows from the front and back surfaces to tool holder will increase and so, the temperature of the contact areas of the tool will lower. When estimating the adhesive wear rate of cemented-carbide tool under the cutting rates corresponding to the cutting temperature of up to 900 °С, it is necessary to take the fatigue character of adhesive wear into consideration. The process of accumulation and development of fatigue damage is associated with micro- and macroplastic flowing of material, which is determined by the processes of initiation, motion, generation, and elimination of line defects - dislocations. Density of dislocations grows with increase of the loading cycles amount and increase of load amplitude. Growth of dislocations density leads to loosening of material, formation of micro- and macrocracks. The heat capacity of material grows as the loosening continues. In the given paper the authors prove theoretically that temperature conductivity coefficient which is associated with heat capacity of material, decreases as fatigue wear grows.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2015
Series:Innovative technologies for producing and machining materials in mechanical engineering
Subjects:
электронный ресурс
труды учёных ТПУ
температура
проводимость
усталостные повреждения
материалы
тепловые потоки
теплопроводность
микротрещины
дефекты
износ
Online Access:http://dx.doi.org/10.1088/1757-899X/91/1/012033
http://earchive.tpu.ru/handle/11683/19796
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644428

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