Surface Structure Analysis of Syntactic Metal Foams Machined by Milling

• Published in: Periodica polytechnica. Mechanical engineering - Mas̆inostroenie Vol. 62; no. 1; p. 26
• Main Authors: Szalóki, István, Viharos, Zsolt János
• Format: Journal Article
• Language: English
• Published: Budapest Periodica Polytechnica, Budapest University of Technology and Economics 01.01.2018
• Subjects: Aerospace engineering; Aerospace industry; Aluminum base alloys; Aluminum oxide; Automobile industry; Automotive engineering; Automotive parts; Composite materials; Environmental impact; Foamed metals; Homogeneous structure; Impact resistance; Mechanical properties; Metal foams; Milling (machining); Particulate composites; Structural analysis; Surface structure; Thermal resistance; Weight reduction
• ISSN: 0324-6051; 1587-379X
• DOI: 10.3311/PPme.11003

In the automotive and aerospace industries the engineers are encouraged to develop new materials, having special features mainly for the purposes of mass reduction, favourable (specifi) mechanical properties, appropriate strength, heat resistance, and environmental impacts, becoming even more critical technically. The matrix of the metal matrix composite, being the subject of our research, is an AlMgSi1 aluminum alloy: it contains 50-55 volume per cent of Al2O3 particles as reinforcement, having an average diameter of 100 - 150 μm. After machining, the surface of materials, having such large particles, is divided by open cavities, therefore other methods have to be used in order to describe and characterise the surface structure than in the case of steel or aluminum components, having a homogeneous structure. In our present article the aim is to analyse the microgeometrical properties of the surface of metal matrix composite materials, produced to the tests and machined with shoulder milling; furthermore, the measures, being able to evaluate the produced surface in an exact way, will be determined.