Microstructural Evolution in 304 Austenitic Stainless Steel during Friction Stir Welding

2008 ◽  
Vol 580-582 ◽  
pp. 9-12 ◽  
Author(s):  
Hiroyuki Kokawa ◽  
Seung Hwan C. Park ◽  
Yutaka S. Sato ◽  
Kazutaka Okamoto ◽  
Satoshi Hirano ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
Austenitic Stainless Steel ◽  
Base Material ◽  
Austenite Matrix ◽  
Maximum Hardness ◽  
Electron Microscopic ◽  
Friction Stir ◽  
Density Of Dislocations ◽  
304 Austenitic Stainless Steel

The characteristics of microstructures in friction stir (FS) weld of 304 austenitic stainless steel were examined. The stir zone (SZ) and thermomechanically affected zone (TMAZ) showed dynamically recrystallized and recovered microstructures, respectively. The hardness of the SZ was higher than that of the base material and the maximum hardness was located in the TMAZ. The higher hardness in TMAZ was attributed to high density of dislocations and sub-boundaries. Electron microscopic observations revealed that ferrite and sigma phases were formed in austenite matrix in the SZ during friction stir welding (FSW).

scholarly journals High Quality-High Speed Friction Stir Welding of 304 Austenitic Stainless Steel

2008 ◽  
Vol 94 (11) ◽  
pp. 539-544 ◽  
Author(s):  
Takeshi Ishikawa ◽  
Hidetoshi Fujii ◽  
Kazuo Genchi ◽  
Shunichi Iwaki ◽  
Shigeki Matsuoka ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
Austenitic Stainless Steel ◽  
High Speed ◽  
High Quality ◽  
Friction Stir ◽  
304 Austenitic Stainless Steel

scholarly journals High Speed–High Quality Friction Stir Welding of Austenitic Stainless Steel

2009 ◽  
Vol 49 (6) ◽  
pp. 897-901 ◽  
Author(s):  
Takeshi Ishikawa ◽  
Hidetoshi Fujii ◽  
Kazuo Genchi ◽  
Shunichi Iwaki ◽  
Shigeki Matsuoka ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Friction Stir Welding ◽  
Austenitic Stainless Steel ◽  
High Speed ◽  
High Quality ◽  
Friction Stir

scholarly journals Microstructures and Properties of Friction Stir Welded 304 Austenitic Stainless Steel

2005 ◽  
Vol 74 (3) ◽  
pp. 138-142 ◽  
Author(s):  
Seung Hwan C. PARK ◽  
Yutaka S. SATO ◽  
Hiroyuki KOKAWA ◽  
Kazutaka OKAMOTO ◽  
Satoshi HIRANO ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Friction Stir ◽  
304 Austenitic Stainless Steel

Microstructures in Friction Stir Welded 304 Austenitic Stainless Steel

2005 ◽  
Vol 49 (3-4) ◽  
pp. 34-40 ◽  
Author(s):  
H. Kokawa ◽  
S. H. C. Park ◽  
Y. S. Sato ◽  
K. Okamoto ◽  
S. Hirano ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Friction Stir ◽  
304 Austenitic Stainless Steel
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