Microstructural Modeling of Ni-Al2O3Composites Using Object-Oriented Finite-Element Method

Abstract

This paper studied the mechanical and thermal properties of interpenetrating phase composites (IPCs) of Ni-Al 2 O 3 using finiteelement-based object-oriented program (OOFEM). It is difficult to model structure-property relationship in IPCs because of interpenetration of two or more phases. In order to understand the material behavior, OOFEM combines the microstructural data in the form microscopic images with the fundamental material properties (such as Young's modulus or thermal conductivity of the constituent phases). Thermal conductivity, thermal expansion coefficient, and modulus of elasticity for the composites are examined using OOFEM and compared with other methods. The distribution of residual thermal stresses is also investigated.

A computational and experimental study on the effective properties of Al2O3‐Ni composites

“…Ceramic‐metal composites have great potential in various technological fields due to their improved thermal, mechanical and electrical properties. Many researchers have reported the processing and physical properties of metal/ceramic composites . It is reported that the thermal expansion behavior of a composite is governed by several material parameters, such as, the volume fraction of constituents, the microstructure of constituents, the presence of voids and the mismatch of thermal expansion coefficient of constituents .…”

“…Many researchers have reported the processing and physical properties of metal/ceramic composites. 5,6 It is reported that the thermal expansion behavior of a composite is governed by several material parameters, such as, the volume fraction of constituents, the microstructure of constituents, the presence of voids and the mismatch of thermal expansion coefficient of constituents. 7 Computational method to material design is very well suited for composite materials and offers a cost sensitive alternate approach in order to understand the mechanisms involved in the thermal and structural behavior of material under various combinations of inclusion and matrix material.…”

Thermomechanical Analysis of Ceramic Composites Using Object Oriented Finite Element Analysis

“…Similar kinds of pixel selection and properties assignment are used by many researchers where two-phase materials or composites such as Ni-Al [37], Al-MgO [19], WC-Al 2 O 3 [20] and AlN-TiN [21] for various applications. Moreover, a varying ZnO composition from 4-10% is also studied by Manish et al [2] for NBT-6BT-ZnO composites.…”

Graphene-reinforced thermoplastic polyurethane nanocomposites: A simulation and experimental study

“…Bakshi et al 16 utilized OOF2 to compute the thermal conductivity of plasma-sprayed Al–12 wt% Si containing 10 wt% multiwall CNTs. Sharma et al 17 examined thermal conductivity, thermal expansion coefficient, and modulus of elasticity for the interpenetrating phase composites of Ni/Al 2 O 3 using OOFEM. Patel et al 18 used OOF2 to study the structure–property relationships of AlN–TiN composites.…”