Influence of Features of Interphase Boundaries on Mechanical Properties and Fracture Pattern in Metal-Ceramic Composites

作     者：Sergey Psakhie Vladimir Ovcharenko Baohai Yu Evgeny Shilko Sergey Astafurov Yury Ivanov Alexey Byeli Alexey Mokhovikov 

作者机构：Institute of Strength Physics and Materials ScienceSiberian Branch of the Russian Academy of Sciences Institute of High Technology PhysicsTomsk Polytechnic University Shenyang National Laboratory for Materials Science Institute of High Current ElectronicsSiberian Branch of the Russian Academy of Sciences Physical-Technical Institute Yurga Technological InstituteTomsk Polytechnic University 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2013年第29卷第11期

页      面：1025-1034页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：The investigation has been carried out within the SB RAS Program Ⅲ.20.2 for Basic Research at partial financial support of the RFBR Grant No.11-08-12069-ofi-m-2011 the Project No.5 of the Belarus NAS SB RAS Program for Joint Basic Research 

主　　题：Metal--ceramic composites Particle-reinforced composite Interphase boundaries Discrete element based analysis Strength and fracture energy Fracture pattern 

摘      要：The results of a theoretical study on the influence of strength of interphase boundaries in metal-ceramic composite on macroscopical characteristics of composite response such as strength, deformation capacity, fracture energy and fracture pattern are presented. The study was conducted by means of computer-aided simulation by means of movable cellular automaton method taking account of a developed ＂mesoscopical＂ structural model of particle-reinforced composite. The strength of interphase boundaries is found to be a key structural factor determining not only the strength properties of metal-ceramic composite, but also the pattern and rate of fracture. The principles for achievement of the high-strength values of particle/binder interfaces in the metal-ceramic composition due to the formation of the wide transition zones （areas of variable chemical composition） at the interphase boundaries are discussed. Simulation results confirm that such transition zones provide a change in fracture mechanism and make the achievement of a high-strength and a high deformation capacity of metal-ceramic composite possible.