Mechanical properties investigation of composite FGM fabricated from Al/Zn

Abstract

This article investigates the novel mechanical behavior of metal–metal gradients (Al/Zn) of the functionally graded materials (FGM) type. The experimental work includes the manufacture of three different models (FGM 1, FGM 2, and FGM 3) with various proportions of volume fraction and gradation as (100% Al–50% Al–50% Zn–50% Zn–50% Al–100% Zn), (100% Al–30% Zn–70% Al–70% Zn–30% Al–100% Zn) and (100% Al–70% Zn–30% Al–30% Zn–70% Al–100% Zn), respectively. The annealing process was carried out to eliminate the casting problems of the FGM. Mechanical tests such as tensile and hardness were performed using different parameters of the gradient of properties for each model. Hardness tests for each model were carried out by the circumferential method along the rod made of the FGM and in the radial direction from the core of the models and at different distances. In the third model, the modulus of elasticity and ultimate strength were 79 and 377 MPa, respectively. The densities of the three models were measured experimentally and theoretically. The results show that model FGM 3 has a tensile strength of 6, which is 10% more than that of models FGM 1 and FGM 2. The results showed a significant improvement of 22% in the tensile strength on average compared to the aluminum–zinc alloy. The circumferential method of hardness testing gives variant results than the radial type due to the properties of FGMs.

Mechanical Properties of Sandwiched Construction with Composite and Hybrid Core Structure

“…In Case (9), using the same open-cell specimen only with a different material (TPU nonrigid plastic), the maximum load is dropped to 0.12 kN with a maximum deflection of 22.48 mm. In the following Cases (10) and (11), they used 8…”

“…(10) Hybrid composite structures can reduce stresses and deformation and enhance overhaul mechanical performance. (11) For future work and to identify the performance of sandwiched construction with the composite and hybrid core structure for static and dynamic properties in detail, it is suggested to modify the present work by discussing failure mode and studying the fracture surfaces of failed specimens using a scanning electron microscope device. Furthermore, change how sandwich components are combined, apply (pretension or posttension) to attach faces to the core, and use nanocoatings in coating surfaces, thus strengthening the sandwich parts and protecting against environmental factors, notably water absorption.…”

“…Composites are cost-effective and environmentally friendly, which has led to their recent evaluation as a means to enhance the performance of sandwich structures through various modeling techniques. As a result, researchers focused on developing effective strategies for fabricating sandwich structures and employing multiple materials, such as metal alloys [8], honeycomb [9], functionally graded materials [10,11], and metamaterials [12,13]. Sandwich structures, made of metal or polymer, are widely recognized as optimal designs for withstanding bending loads.…”

Mathematical Formulation and Numerical Simulation of the Mechanical Behavior of Ceramic/Metal (TiB/Ti) FG Sheets Subjected to Spherical Indenter

“…Experimental tests performed on FG materials proved that these promising composite materials with their specific features present tailored properties compared to conventional mono-material [1][2][3]. Moreover, it is noteworthy that FG materials have addressed numerous interface problems encountered in multi-layered composite materials.…”