Research Article:

عبدالله عذيب مشاري
المعهد التقني , السماوة

Email address:  Abdmshari_1957@yahoo.com

ABSTRACT

The work aims to study the joining process of to pices Aluminum alloy
7075 with each other using filler metal of copper or ( Tin + Lead ) by means
of friction stir welding . A group of specimens were joined by friction stir
welding method without metallic filling and using different velocities and
different welding tool. Another specimen were taken with the same previous
conditions but using metallic filler of copper or ( Tin + lead ) ( the filling
metal used in Soldering) . It was evident the interference of this filler with
the base metal (7075) with the assurance of granular growth in the region of
interference , while when using the filler of copper type, no interference
exist but the copper was found separated in the form of tapes around the
region of its interference with the base metal . It was also found that the
higher rotational speed will result in higher refragement in copper.

Keywords: Filler metal, friction stir welding, fusion zone, advanced side, retread side

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