Friction Stir Additive Manufacturing—A Review
27
Table 1
Experimental and theoretical literature in the field of FSAM technologies categorized according to the type of process carried out with a brief description
S. No. Type
Process
Description
1
FSAM Type 1
Experimental paper on similar and dissimilar friction
surfacing of mild steel and stainless steel
In this work, sound multi-layer deposits were realized through
friction surfacing technique in both single- and multi-layer
approaches. A three-layer multi-structure in the brick
architecture of mild steel on a plate of mild steel with a
thickness of 1 mm per layer after surface machining and total
3 mm was fabricated. Also, a single track with five layers each
of 1.5 mm of AISI stainless steel; total amounting to 7.5 mm
was also produced. Likewise, a multi-material structure of total
thickness of 6 mm with two different alloys of stainless steel
AISI 316 and AISI 410 was also built. Here, three strips (each of
1 mm) of each alloy were welded on top of the other alloy in an
alternating fashion. The microstructure examination revealed an
excellent inter-layer bonding, and one interesting property was
the potential of this technique to make parts with completely
enclosed internal features with negligible cavities. The
mechanical properties were found to be at par with standard
wrought counterparts [30]
2
FSAM Type 1
Experimental paper on additive friction stir of inconel
625
This article aims at introducing additive friction stir (AFS) to
develop completely dense exact shape components. In this study,
the microstructure and mechanical properties of Inconel 625
(IN625) produced through AFS have been analysed. High heat
applications of inconel are very useful piques the interest of the
aerospace sector. Aeroprobe corporation provided the AFS
fabricated specimens of IN625. A meticulous study of the
samples has been reported in the article which found out a
significantly refined, equiaxed grain structure produced through
continuous dynamic recrystallization. The report concludes that
the mechanical properties displayed significantly higher values
than that of cast, wrought or materials produced by fusion-based
AM for IN625 [57]
(continued)
27
Table 1
Experimental and theoretical literature in the field of FSAM technologies categorized according to the type of process carried out with a brief description
S. No. Type
Process
Description
1
FSAM Type 1
Experimental paper on similar and dissimilar friction
surfacing of mild steel and stainless steel
In this work, sound multi-layer deposits were realized through
friction surfacing technique in both single- and multi-layer
approaches. A three-layer multi-structure in the brick
architecture of mild steel on a plate of mild steel with a
thickness of 1 mm per layer after surface machining and total
3 mm was fabricated. Also, a single track with five layers each
of 1.5 mm of AISI stainless steel; total amounting to 7.5 mm
was also produced. Likewise, a multi-material structure of total
thickness of 6 mm with two different alloys of stainless steel
AISI 316 and AISI 410 was also built. Here, three strips (each of
1 mm) of each alloy were welded on top of the other alloy in an
alternating fashion. The microstructure examination revealed an
excellent inter-layer bonding, and one interesting property was
the potential of this technique to make parts with completely
enclosed internal features with negligible cavities. The
mechanical properties were found to be at par with standard
wrought counterparts [30]
2
FSAM Type 1
Experimental paper on additive friction stir of inconel
625
This article aims at introducing additive friction stir (AFS) to
develop completely dense exact shape components. In this study,
the microstructure and mechanical properties of Inconel 625
(IN625) produced through AFS have been analysed. High heat
applications of inconel are very useful piques the interest of the
aerospace sector. Aeroprobe corporation provided the AFS
fabricated specimens of IN625. A meticulous study of the
samples has been reported in the article which found out a
significantly refined, equiaxed grain structure produced through
continuous dynamic recrystallization. The report concludes that
the mechanical properties displayed significantly higher values
than that of cast, wrought or materials produced by fusion-based
AM for IN625 [57]
(continued)