microstructure and mechanical properties of welded joint on austenitic 316L steel produced by SLM method

Sternadelová, Kristýna; Krupová, Hana (Koníčková); Mohyla, Petr

doi:10.37904/metal.2021.4142

Cited by 1 publication

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“…The attractive benefit of a drop in vehicle weight can be observed in terms of enhanced fuel efficiency and less exhaust CO2 gas emissions. However, their widespread applications are limited compared to commercial structural materials such as steel and aluminium alloys [2,3]. A hexagonal close-packed structure of Mg alloys offers a limited number of independent slip systems that prevent excessive plastic deformation at ambient temperature [4].…”

Section: Introductionmentioning

confidence: 99%

Microstructure evolution of az61 magnesium alloy processed by ecap method

VINDYŠ

Szkandera

Kedroň

et al. 2022

METAL 2022 Conference Proeedings

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The article deals with the grain refinement and microstructure evolution of AZ61 magnesium alloy subjected to sever plastic deformation (SPD) by ECAP (Equal Channel Angular Pressing) process. The commercial hot extruded AZ61 alloy subjected to severe plastic deformation possesses a two-phase microstructure consisting of solid solution matrix and massive  -phase Mg17Al12 distributed mostly at grain boundaries. Based on selected area diffraction and electron back scattered diffraction applied to a sample after the third pass, it can be concluded that plastic deformation induced by ECAP occurs mainly by slip mode forming a high density network of dislocation inside the grains. The grains size was significantly refined to 1.4 μm after the third pass of ECAP. The refinement of grain size is probably due to polygonization process associated with formation of high angle grain boundaries due to dislocations rearrangement. Mg17Al12 precipitates of size scattered from 100 to 200 nm and also the primary precipitates of Al6Mn phase were observed in this alloy.

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Section: Introductionmentioning

confidence: 99%