NDLI: A356 alloy foaming by titanium hydride

Content Provider	Springer Nature Link
Author	Sarajan, Zohair
Copyright Year	2015
Abstract	In this study the parameters which affecting on foaming process of aluminum A356 for preparing of light products are investigated. Titanium hydride (TiH$_{2}$) powder as a foaming agent (0.5 to 2.5 wt %) added to the aluminum melt. This is focused on thermal decomposition behavior of titanium hydride on the melt foaming during casting and unidirectional solidification of A356 alloy. Therefore, the effects of heating temperature, stirring time and TiH$_{2}$ wt %, on percentage of porosity have been investigated. It was found that with the optimum torque of 0.35 Nm for the melt and TiH$_{2}$ addition of 1.0–1.5 wt %, remarkably foaming efficiency could be achieved. Foamed A356 cross sections were microscopically characterized by Scanning Electron Microscopy corresponding to different TiH$_{2}$ contents. The optimum amount of titanium hydride content induces uniformity in porosity cell structure distribution in the whole cross section of the foamed aluminum. Medium thickness of thin cell wall is near to 20 μm which is easily broken or disrupted.
Starting Page	516
Ending Page	521
Page Count	6
File Format	PDF
ISSN	10678212
Journal	Russian Journal of Non-Ferrous Metals
Volume Number	56
Issue Number	5
e-ISSN	1934970X
Language	English
Publisher	Allerton Press
Publisher Date	2015-10-24
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	SEM characterization TiH$_{2}$ A356 composite foamed structure density Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Metals and Alloys Mechanics of Materials

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