scholarly journals Effect of Pre/Post Heat Treatment on the Friction Stir Welded SSM 356 Aluminum Alloys

2012 ◽  
Vol 32 ◽  
pp. 1139-1146 ◽  
Author(s):  
W. Boonchouytan ◽  
T. Ratanawilai ◽  
P. Muangjunburee
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloys ◽  
Post Heat Treatment ◽  
Friction Stir

Effect of post-heat treatment on the fatigue behaviour of a friction stir spot-welded Al–Mg–Si alloy

2009 ◽  
Vol 23 (7) ◽  
pp. 481-489 ◽  
Author(s):  
Yoshihiko Uematsu ◽  
Keiro Tokaji ◽  
Yasunari Tozaki ◽  
Tatsuo Kurita ◽  
Shunsuke Murata
Keyword(s):  
Heat Treatment ◽  
Fatigue Behaviour ◽  
Post Heat Treatment ◽  
Friction Stir ◽  
Spot Welded

scholarly journals Effect of Heat Treatment T6 on the Friction Stir Welded SSM 6061 Aluminum Alloys

2014 ◽  
Vol 56 ◽  
pp. 172-180 ◽  
Author(s):  
Worapong Boonchouytan ◽  
Jaknarin Chatthong ◽  
Surasit Rawangwong ◽  
Romadorn Burapa
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloys ◽  
Friction Stir

scholarly journals Effect of combinations between joining and heat treatment on properties of friction stir welds in 7050 aluminum alloys

2006 ◽  
Vol 56 (3) ◽  
pp. 162-165 ◽  
Author(s):  
Sunao TANAKA ◽  
Masaki KUMAGAI ◽  
Hidenori HATTA ◽  
Hideo YOSHIDA
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloys ◽  
Friction Stir

scholarly journals The Influence of Pre- and Post-Heat Treatment on Mechanical Properties and Microstructures in Friction Stir Welding of Dissimilar Age-Hardenable Aluminum Alloys

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1162 ◽  
Author(s):  
Yang Jia ◽  
Sicong Lin ◽  
Jizi Liu ◽  
Yonggui Qin ◽  
Kehong Wang
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
Friction Stir Welding ◽  
Weld Joint ◽  
Direct Result ◽  
Composition Analysis ◽  
Number Density ◽  
Post Heat Treatment ◽  
Friction Stir ◽  
Alloy 6061

An Al-Mg-Si alloy 6061 and an Al-Zn-Mg alloy 7A52 were joined by friction stir welding successfully. Pre- and post- heat treatment were employed to improve the strength of the weld. The results show a best weld joint with the lowest hardness of 100 HV in 6061 matrix, being achieved by post-solid-solution and subsequent two-stage artificial aging for the whole weld joint of the 7A52 and 6061 solid solution. Under this condition, the weld nugget zone (WNZ) is stronger than 6061 matrix but it has lower hardness than 7A52 matrix. The hardness of WNZ is contributed by the combination of η′ and L precipitates, dynamically changes along with the ratios between the number of η′ and L precipitates. The higher the number density of η′ precipitates, the hardness of WNZ is closer to that of the 7A52 matrix. Otherwise, the higher number density of L precipitates, the hardness of WNZ is closer to that of 6061 matrix. The coexistence of η′ and L precipitates is a direct result from the mixture of 7A52 and 6061 alloys achieved by stirring. Precipitates identification and composition analysis reveal a dynamic WNZ with constituent transition in hardness and composition.

Precipitates formation and its impact in friction stir welded and post-heat-treated Inconel 718 alloy

2011 ◽  
Vol 1363 ◽  
Author(s):  
Kuk Hyun Song ◽  
Han Sol Kim ◽  
Won Yong Kim
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Inconel 718 ◽  
Rotation Speed ◽  
Base Material ◽  
Post Heat Treatment ◽  
Inconel 718 Alloy ◽  
Friction Stir ◽  
Heat Treated

ABSTRACTIn order to investigate the formation of precipitates such as MC carbides and intermetallic compounds in the friction stir welded and post-heat-treated Inconel 718 alloy, this work was carried out. Furthermore, the microstructural and mechanical properties of welds and post-heat-treated material were evaluated to identify the effect on precipitates formed during post-heat-treatment. Friction stir welding (FSW) was performed at a rotation speed of 200 rpm and welding speed of 150 mm/min; heat treatment was performed after welding at 720 °C for 8 hours in vacuum. As a result, the grain size due to FSW was notably refined from 5–20 μm in the base material to 1–3 μm in the stir zone; this was accompanied by dynamic recrystallization, which resulted in enhancements in the mechanical properties as compared to the base material. In particular, applying heat treatment after FSW led to improvements in the mechanical properties of the welds—the microhardness and tensile strength increased by more than 50% and 40% in fraction, respectively, as compared to FSW alone.

scholarly journals Effect of Post Heat Treatment on the Microstructure and Microhardness of Friction Stir Processed NiAl Bronze (NAB) Alloy

Metals ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1695-1703 ◽  
Author(s):  
Yuting Lv ◽  
Liqiang Wang ◽  
Xiaoyan Xu ◽  
Weijie Lu
Keyword(s):  
Heat Treatment ◽  
Post Heat Treatment ◽  
Friction Stir
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