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2017
Journal Article
Titel
High Strain Rate Tensile and Compressive Testing and Performance of Mesoporous Invar (FeNi36) Matrix Syntactic Foams Produced by Feedstock Extrusion
Abstract
The present study investigates the high strain rate behavior of mesoporous metal matrix syntactic foams focusing on the dependence of compressive and tensile properties on strain rate. The strain rate range, covered both in compression and tension, extends from quasi-static conditions or 10−3 s−1 to 103 s−1. Syntactic foams based on commercial high strength hollow glass microspheres and Invar (FeNi36) matrix are produced by means of feedstock extrusion and subsequent sintering. Levels of glass microsphere addition examined are 5 and 10 wt%, respectively, corresponding to approximately 40 and 60 vol% of microspheres in the initial mix prior to sintering, and considering the metal and filler fraction only. Reference samples containing no microsphere addition have been included in the study. Mechanical testing is accompanied by metallographic examinations.
Author(s)
Peroni, Lorenzo
Department of Mechanical and Aerospace Engineering (DIMEAS) Politecnico di Torino, 10129 Torino, Italy
Scapin, Martina
Department of Mechanical and Aerospace Engineering (DIMEAS) Politecnico di Torino, 10129 Torino, Italy
Lehmhus, Dirk
MAPEX Center for Materials and Processes & ISIS Sensorial Materials Scientific Centre, University of Bremen, Bremen 28359, Germany
Avalle, Massimiliano
Department of Mechanical and Aerospace Engineering (DIMEAS) Politecnico di Torino, 10129 Torino, Italy