INFLUENCE OF VIBRATIONS DURING DIRECTIONAL SOLIDIFICATION ON MICROSTRUCTURE, HARDNESS AND STRENGTH OF Al-Si-GRAPHITE FG COMPOSITE
Journal Title: Journal of Mechanical Engineering Research & Developments (JMERD) - Year 2019, Vol 42, Issue 3
Abstract
The present work aims to synthesize functionally Graded (FG) composites through directional solidification (DS) in combination with lateral vibrations. Directional solidification is one of the effective processing techniques to synthesize FG composite. Due to the advancements in developing new class of materials, DS has become one of the important processing techniques in order to attain the gradation in properties. To achieve the better gradation of properties in Al-Si alloy, Chill was placed at the bottom of the mold which is subjected to lateral vibrations. FG composites produced showed that better hardness was obtained towards the region where primary Silicon (Si) is precipitated. In contrast diametrical compression strength results revealed that the Si rich region is brittle in nature when compared to the other end of the cast which is ductile in nature. Microstructural study also revealed that gradation in properties has taken place from bottom to top portion due to precipitation of Si.
Authors and Affiliations
Ramesh Babu N, Kiran Aithal S
Keywords
Related Articles
- EP ID EP572239
- DOI 10.26480/jmerd.03.2019.84.86
- Views 50
- Downloads 0
MULTI RESPONSE OPTIMIZATION OF EDM PROCESS PARAMETERS FOR INCONEL X-750 USING MOORA
Electrical discharge machining (EDM) is used extensively to machine hard to cut materials like nickel, titanium and super alloys with higher dimensional accuracy and surface finish. In this present study, a multi respons...
A STUDY OF PHASE TRANSFORMATION IN SHAPE MEMORY ALLOY CuAl9Fe4
Microstructure and phase transformation in shape memory alloy Cu-Al (Fe addition: 9% Al, 4 % Fe) were investigated in this study. It is a material capable of restoring its original shape when impacted by a reasonable tem...
ENVIRONMENT-FRIENDLY LOGGING IN THE CONTEXT OF WATER LOGGED SOIL AND KNOB- AND-RIDGE TERRAIN
Wood is an important building material. However, its major reserves are in hard-to-reach are-as, such as water-logged soils, mountain and knob-and-ridge terrains. This situation leads to large wood extraction costs, beca...
STUDY ON THE BREAKDOWN OF MILLING BALLS MADE OF 13%Cr WHITE CAST-IRON WORKING IN STRONG ABRASIVE AND CLASH CONDITIONS
The breakdown due to abrasion and clash of the milling balls made of 13% Cr white cast iron is a complicated process which depends on many factors, especially on the strength of the matrix and carbide phases. As shown, s...
DEVELOPMENT ORIENTATION FOR HIGHER EDUCATION TRAINING PROGRAMME OF MECHANICAL ENGINEERING IN INDUSTRIAL REVOLUTION 4.0: A PERSPECTIVE IN VIETNAM
.