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Effect of Forging on Microstructure, Mechanical Properties and Acoustic Emission Characteristics of Al Alloy (2014): 10 wt.% SiCp Composite

Authors
  • Pattnaik, Amulya Bihari1
  • Das, Satyabrat2
  • Jha, Bharat Bhushan3
  • 1 Indira Gandhi Institute of Technology (IGIT), Sarang, Dhenkanal, Odisha, India , Dhenkanal (India)
  • 2 CSIR-Advanced Materials and Processes Research Institute (AMPRI), Bhopal, India , Bhopal (India)
  • 3 CSIR-Central Glass and Ceramic Research Institute (CGCRI), Kolkata, India , Kolkata (India)
Type
Published Article
Journal
Journal of Materials Engineering and Performance
Publisher
Springer US
Publication Date
May 10, 2019
Volume
28
Issue
5
Pages
2779–2787
Identifiers
DOI: 10.1007/s11665-019-04094-z
Source
Springer Nature
Keywords
License
Yellow

Abstract

In this paper a systematic study has been undertaken to study the effect of forging on microstructure, mechanical properties and acoustic emission (AE) characteristics of Al alloy (2014)—10 wt.% SiC metal-matrix composites. Hammer forging was carried out at a temperature of 470 °C in an open die, with a deformation ratio of 3.5:1. Microstructural analyses were carried out at three different positions of forged billet. Significant material flow was observed in the sample taken from the sides of the forged billet, but no appreciable material flow was observed at the center of the forged billet. The microstructural characterization showed that forging resulted in cracking of SiC particles in Al alloy (2014)—10 wt.% SiC composite. The AE results during forging showed an increase in AE signal intensity during the initial yielding period and a subsequent decrease in the intensity of AE signals with sudden burst at the end of the forging. The plastic deformation at room temperature was less ductile in nature but at high temperature, appreciable ductility was observed. The FESEM micrographs of fracture surfaces of the tensile specimens showed appreciable clustering of SiC particles during plastic deformation both at room and high temperature.

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