Experimental Investigation on the Synthesis of Al5086-GRN-ηSiC Hybrid Surface Composite using Additive Powder Fed Friction Stir Processing
NOPR - NISCAIR Online Periodicals Repository
View Archive InfoField | Value | |
Title |
Experimental Investigation on the Synthesis of Al5086-GRN-ηSiC Hybrid Surface Composite using Additive Powder Fed Friction Stir Processing
|
|
Creator |
Raheja, Gagandeep Singh
Prakash, Chander Sehgal, Shankar |
|
Subject |
Al5086 alloy
Additive powder fed Friction stir processing Surfaces Composite materials Hardness |
|
Description |
305-313
In the current research work, graphene (GRN) and nano-silicon carbide (SiC) reinforced Al5086-alloy based hybrid surface composites has been developed using a unique surface engineering technique called additive-powder-fed friction stir processing (APF-FSP) process. Herein, the mechanical exfoliation of graphite into GRN has been carried out using APF-FSP process to improve the microstructural and mechanical properties. The microstructure, morphology, and mechanical properties of as-synthesized hybrid Al5086-GRN-ηSiC surface composite has been investigated. Microscopic analysis has been conducted to scientifically ascertain the grain size, crystal structure and surface morphology of APF-FSP zone. The mechanical properties such as hardness and elastic modulus have also been evaluated using nanoindentation and micro-hardness technique. Nano-indentation and micro-pillar testing techniques have been used to assess mechanical properties in terms of hardness, elastic modulus, and compressive strength of as-developed hybrid Al5086-GRN-ηSiC surface composite. The best optimal condition to obtain the defect free structure is 1800 RPM rotational speed and 40 mm/min transverse speed with trapezoidal shape tool pin geometry. The microstructure and morphological examination reveal that the grain size of Al-matrix gets refined from 30 μm to ~8 μm and reinforcements (GRN/ ηSiC) are uniformly distributed in the matrix, which is expected to improve the mechanical properties. The SEM and TEM morphology analysis show that the diphasic nano-mixture cluster of ηSiC and GRN in the range (100-200 nm) have been formed and GRP coexist in multi-layer of atoms in Al-matrix owing to mechanical exfoliation of graphite. The highest hardness (145 HV0.3) and tensile strength (385±5 MPa) have been obtained. Overall, findings of this work conclude that APF-FSP offers up new possibilities for fabricating functionalized surface composites with improves mechanical properties for aerospace and automobile industries. |
|
Date |
2023-06-22T09:47:00Z
2023-06-22T09:47:00Z 2023-06 |
|
Type |
Article
|
|
Identifier |
0971-4588 (Print); 0975-1017 (Online)
http://nopr.niscpr.res.in/handle/123456789/62051 https://doi.org/10.56042/ijems.v30i2.1713 |
|
Language |
en
|
|
Publisher |
NIScPR-CSIR, India
|
|
Source |
IJEMS Vol.30(2) [April 2023]
|
|