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Effect of heat treatment on microstructures and mechanical properties of A356 alloy cast through rapid slurry formation (RSF) process

Gupta, Robin and Sharma, Ashok and Pandel, Upender and Ratke, Lorenz (2017) Effect of heat treatment on microstructures and mechanical properties of A356 alloy cast through rapid slurry formation (RSF) process. International Journal of Cast Metals Research. Taylor & Francis. ISSN 1364-0461

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Abstract

The effect of T5 heat treatment on microstructure and mechanical properties of A356 alloy was observed. The as-cast A356 alloy exhibited coarse dendrites and long Si needles. RSF process changed the dendritic α-Al phase to globular morphology which helps in improving the mechanical properties of the alloy. The addition of 0.6wt-% Al–5Ti–1B grain refiner refined the average grain size of primary α-Al phase. T5 heat treatment at 170 °C for 20 h in different processing conditions was given to A356 alloy. T5 heat treatment led to further refinement of α-Al phase and Si needles, precipitation hardening due to Mg2Si phase and reduction in the porosity level (%). The Quality Index for A356 alloy in different processing conditions was also measured. Results showed that RSF process with the use of baffles, addition of grain refiner and T5 heat treatment had improved the mechanical properties over other processing conditions.

Item URL in elib:https://elib.dlr.de/111505/
Document Type:Article
Title:Effect of heat treatment on microstructures and mechanical properties of A356 alloy cast through rapid slurry formation (RSF) process
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gupta, Robinrbngpta (at) gmail.comUNSPECIFIED
Sharma, AshokUNSPECIFIEDUNSPECIFIED
Pandel, UpenderUNSPECIFIEDUNSPECIFIED
Ratke, Lorenzlorenz.ratke (at) dlr.dehttps://orcid.org/0000-0003-2487-4717
Date:6 March 2017
Journal or Publication Title:International Journal of Cast Metals Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Taylor & Francis
ISSN:1364-0461
Status:Published
Keywords:Semi-solid metal processing; rapid slurry formation process; microstructure; mechanical properties, baffle
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugstruktur (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogele
Deposited By: Milow, Dr. Barbara
Deposited On:01 Jun 2017 07:46
Last Modified:06 Sep 2019 15:19

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