Szukana fraza: [Abstract = "Three process parameters were used\: pre\-heating time, rotating speed and plunging depth of the tool, with four levels for each parameter. The results indicated that the two materials joined by a micro\-scale mechanical interlock at an interface line of a width ranged between 0.7 to \~ 2.5 mm. The joint`s shear force reached a minimum and maximum value of 2000 and 2500 N, respectively. The plunging depth was the most effective factor affecting the amount of the extruded aluminum and the joint`s shear force."]

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