Microcladding of hypereutectic Al–Si alloys: technological aspects and structure features

Autor:	St. Nowotny, Sergey N. Grigoriev, G. O. Gvozdeva, Tatyana V. Tarasova
Rok vydání:	2014
Předmět:	Materials science Structure formation Silicon Mechanical Engineering Metallurgy Metals and Alloys chemistry.chemical_element Microstructure Laser Indentation hardness law.invention chemistry Mechanics of Materials Aluminium law Powder metallurgy Particle-size distribution
Zdroj:	International Journal of Cast Metals Research. 27:357-361
ISSN:	1743-1336 1364-0461
DOI:	10.1179/1743133614y.0000000119
Popis:	This study aims to investigate the technological possibility to generate high precision microrange structure from aluminium alloys using laser microcladding. Clad tracks of Al–Si alloys with different silicon contents with lateral resolution of ∼200 μm were produced using co-axial laser microcladding. Particle size distribution with surface morphology and microstructure of the initial powders were investigated. Mechanisms of structure formation in Al–Si alloys during laser microcladding were studied. It was revealed that the chemical composition of the powder material influences the structure formation process and microhardness of hypereutectic Al–Si alloys produced by microcladding. In addition, the effect of processing parameters on the microstructure and geometry of the resulted tracks is discovered. The conclusions on technological possibility of manufacturing the single tracks with width of
Databáze:	OpenAIRE
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