If your alignment was correct before you bent the arm, and if you didn't knock anything out of alignment when you bent the arm, and if the new arm is exactly the same length as the old arm, and if you put the cam shaped washer back in exactly the same position it was in before, then you won't need an alignment.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6