Abstract
Wire and arc additive manufacturing (WAAM) provides a promising alternative to conventional machining for the production of large structures with complex geometry, as well as individualized low quantity components, using cost-efficient production resources. Due to the layer-by-layer build-up approach, process conditions, such as energy input, deposition patterns and heat conduction during the additive manufacturing process result in a unique thermal history of the structure, affecting the build-up properties. This experimental study aims to describe the effects of thermal cycling on the geometrical and material properties of wire arc additive manufactured Al-5356 aluminum alloy. Under consideration, that Al-5356 is a non-heat treatable alloy, a significant effect on geometrical formation is expected. Linear wall samples were manufactured using pulsed cold metal transfer (CMT-P) under variation of wire-feed rate, travel speed and interpass temperatures. The samples were analyzed in terms of geometry; microstructural composition; hardness and residual stress. Furthermore, the mechanical properties were determined in different building directions.
Highlights
In recent years, additive manufacturing (AM) of metallic components gained growing interest in a wide range of industrial sectors such as civil engineering, turbine construction as well as automotive and aerospace industry [1,2,3,4]
The samples were analyzed in terms of geometry; microstructural composition; hardness and residual stress
Summarizing, is to toinvestigate investigatethe theheat heataccumulation accumulation and Summarizing,the thespecific specificobjective objective of of this this study study is and thethe influence of different temperature-time regimes on the resulting component properties during wire influence of different temperature-time regimes on the resulting component properties during wire and arc additive manufacturing of
Summary
Additive manufacturing (AM) of metallic components gained growing interest in a wide range of industrial sectors such as civil engineering, turbine construction as well as automotive and aerospace industry [1,2,3,4]. In order to meet the requirements of different industrial sectors, a variety of AM processes, following different approaches of material deposition, have been developed. Due to the layer-by-layer build-up approach, both the WAAM process itself and the geometrical and properties such as hardness, strength and ductility as well as to specific requirements such as mechanical properties of the resulting components are directly related to the welding parameters and corrosion resistance. Compared properties to conventionally manufactured components, the primary material geometrical and mechanical of the resulting components are directly related to the of AM components merely consists of weld metal. An increasing number of studies on material-specific processability and component properties.
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