As the wire feed speed increases within the range of 3.5 m/min to 7.5 m/min, the width and height of the WAAM parts generally show an increasing trend.
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Influence of Wire Arc Additive Manufacturing Parameters on the Morphology, Microstructure, and Hardness of DSS2209 Single-Bead Deposited Layers.
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The sentences
When the wire feed speed increased from 5.5 m/min to 7.5 m/min, the hardness generally exhibited a decreasing trend.