Micromechanical Model of Polycrystalline Materials with Lamellar Substructure

Archives of Metallurgy and Materials

K. Kowalczyk-Gajewska¹ 

[1] Polish Academy of Sciences, Institute of Fundamental Technological Research, 02-106 Warszawa, 5B Pawinskiego Str., Poland;

关键词: Keywords: micromechanics;    homogenization;    lamellar substructure;    anisotropic material;    anisotropy degree;   

DOI  :  10.2478/v10172-011-0055-3

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Micromechanical model of polycrystalline materials with lamellar substructure is presented. The lamellar microstructure of grains is accounted for using the well-established framework developed for layered composites. Within the approach different scale transition rules between the level of lamellar grain and the polycrystalline sample can be employed. The model capabilities are tested using the example of α2 + γ-TiAl intermetallic. Elastic properties and the initial yield surface for the lamellar grain (PST crystal) and for the untextured polycrystal are estimated. Elastic and plastic anisotropy degree is analyzed.

【 授权许可】

Unknown