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Structure and Mechanical Properties of Explosive Welded Mg/Al Bimetal/ Struktura I Właściwości Mechaniczne Połączenia Uzyskanego Metodą Zgrzewania Wybuchowego Bimetalu Mg/Al

2014; De Gruyter Open; Volume: 59; Issue: 4 Linguagem: Inglês

10.2478/amm-2014-0270

2300-1909

D. Balga, D. Ostroushko, Karel Saksl, Eva Mazancová, Ondrej Milkovič,

Advanced Welding Techniques Analysis

Abstract In the article we analyzed shape, local mechanical properties, chemical and phase composition of Magnesium/Aluminium cladded material prepared by explosion welding. In particular we focus our investigation on Mg/Al interface and areas close to the joint. Hardness of the joined materials measured far from their interface is similar for both materials, however in the region of interface the hardness drops down by 40%. Phase transformations in the interface was examined by a hard X-ray micro-diffraction experiment performed at beamline P07 at PETRA III at the energy of 99 keV which helped us identify in Al: fcc-Al, Al 2 Cu tetragonal and Al 7 Cu 2 Fe tetragonal and in Mg: hcp-Mg, Mg 2 Si cubic phases. In the interface we haven’t observed any new intermetallics, but computation of lattice parameters and profiles of Al and Mg peaks proved an existence of solid solution with different gradient of chemical composition.