Improving mechanical properties of pinless friction stir spot welded joints by eliminating hook defect

Li, Wenya; Li, Jinfeng; Zhang, Zhihan; Gao, Dongdong; Wang, Weibing; Dong, Chunlin

doi:10.1016/j.matdes.2014.05.028

Cited by 113 publications

(32 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, between the upper and lower specimens could generate small long hooks. Heat and friction would get rid of the hooks [19] as illustrated in Fig. 4(c).…”

Section: Characteristics Of Microstructure After Weldingmentioning

confidence: 99%

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

Sitthipong¹,

Towatana²,

Meengam³

et al. 2018

View full text Add to dashboard Cite

This research aims to study the influence of parameters that affect the mechanical properties of semi-solid-metal 7075 aluminum alloy with friction stir spot welding process. The parameters for this experiment such as rotation welding speed at 380, 760, 1240 and 2500 rpm and welding time at 60, 90 and 120 seconds were employed respectively. The study found that the welded specimens at all the conditions can be welded very well. Moreover, friction stir spot welding process showed that the hardness in weld zone had an average value at 79.83 HV which is lower than the hardness of the base metal. The shear tensile strength of the welded specimens had the average value approximately 194.20 MPa at rotation welding speed of 2500 rpm, welding time of 90 seconds and plunge of depth of 2 millimetres. The microstructure in the weld zone and thermal mechanical affected zone were deformed permanently. Therefore, friction stir spot welding process of this aluminum alloy provided good effects on mechanical properties. Statistical analysis showed that the coefficient of determination R-square was equal to 93.50 percent. This means that the variations of the experiments were controllable, such as equipment or other factors in the experiment. For the remaining, only 6.50 percent was uncontrolled factors.

show abstract

“…Moreover, between the upper and lower specimens could generate small long hooks. Heat and friction would get rid of the hooks [19] as illustrated in Fig. 4(c).…”

Section: Characteristics Of Microstructure After Weldingmentioning

confidence: 99%

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

Sitthipong¹,

Towatana²,

Meengam³

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Bunlardan birincisi, Şekil 4a'da gösterilen ve düşük kaynak kopma mukavemeti elde edilen çapraz birleşme kesilmesi (cross nugget failure), ikincisi ise, Şekil 4b'de gösterilen ve en yüksek kopma mukavemeti elde edildiği külçe çıkması (pull nugget failure) şeklinde gerçekleşen kırılma tipleridir [11], [18], [19]. Düşük kopma mukavemeti elde edilen numuneler incelendiğinde yetersiz nüfuz etme ve aşırı taşmaların meydana geldiği gözlenmiştir.…”

Section: Aa2024-t3/aa5754-h22unclassified

Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

Bilici¹,

Bakır²,

Bozkurt³

et al. 2016

Pamukkale J Eng Sci

View full text Add to dashboard Cite

“…S/N oranı değeri küçük olan değer kötü, büyük olan değer en iyi, nominal değer iyi olarak değerlendirilir. Hedeflenen değere göre S/N farklı şekillerde hesaplanır ve analiz edilir [18]. Çalışmamızda, S/N oranı büyük olan değer en iyi olarak analiz edilmiştir.…”

Section: Sknk'li Birleştirmelerin Taguchi Metoduyla çEkme-makaslama Kunclassified

Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

Bilici¹,

Bakır²,

Bozkurt³

et al. 2016

Pamukkale J Eng Sci

View full text Add to dashboard Cite

Improving mechanical properties of pinless friction stir spot welded joints by eliminating hook defect

Cited by 113 publications

References 31 publications

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

The Influence of Parameters Affecting Mechanical Properties and Microstructures of Semi-Solid-Metal 7075 Aluminum Alloy by Using Friction Stir Spot Welding

Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

Taguchi analysis of dissimilar aluminum sheets joined by friction stir spot welding

Contact Info

Product

Resources

About