Effect of Threads on Tool in Friction Stir Welding of Aluminum Alloys

Fujii, Hidetoshi; Cui, Ling; Maeda, Masakatsu; Sato, Yutaka; Nogi, Kiyoshi

doi:10.4028/www.scientific.net/msf.512.389

Cited by 15 publications

(21 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although a straight probe tool without threads can also produce sufficient joints, 30) in this study, a tool with a tapered probe was used in order to extend the welding tool life. The tool dimensions and shapes are shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

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

Ishikawa¹,

Fujii

Genchi³

et al. 2009

ISIJ Int.

Self Cite

View full text Add to dashboard Cite

Although several studies on the friction stir welding of high temperature materials have recently been reported, their practical use has not yet occurred due to some problems to be solved such as decreases in the corrosion resistance and joint efficiency during a high-speed joining. In this study, the effect of the welding speed on the joint efficiency was investigated in detail. As a result, it has been clarified that at a rotational speed of 600 rpm, the friction stir welding of 304 austenitic stainless steel is possible up to the joining speed of 1 200 mm/min, and the tensile strength of the joint exceeds that of the parent material up to the joining speed of 1 150 mm/min. In addition, the corrosion resistance is significantly improved at the higher welding speeds. No rust was observed during the salt spray testing of the 1 000 mm/min joint. Thus, an increase in the welding speed can improve productivity and the product quality by decreasing corroded region. These results are expected to extend to an actual application to products by further improving the technology.

show abstract

Section: Methodsmentioning

confidence: 99%

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

Ishikawa¹,

Fujii

Genchi³

et al. 2009

ISIJ Int.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, in the early stages, research results did not reach an agreement in the relationship between the welding conditions and the mechanical properties of the welds. [7][8][9][10][11] Lee et al [7] and Lim et al [8] reported that decreasing the welding speed and increasing the rotation rate decreased the strength and elongation of FSW 6061Al-T651 joints. However, Ren et al's study [9] indicated that the strength of the FSW 6061Al-T651 joints did not change significantly with the variation of the rotation rate.…”

Section: Introductionmentioning

confidence: 97%

“…In the past decade, many researchers [2][3][4][5][6][7][8][9][10][11] have studied this relationship. It was reported that rotation rate, advancing speed, and tool geometry exerted significant effects on the thermal values, microstructural evolution, and mechanical properties of the FSW joints.…”

Section: Introductionmentioning

confidence: 99%

A Transient Thermal Model for Friction Stir Weld. Part II: Effects of Weld Conditions

Zhang

Xiao

2011

Metall Mater Trans A

View full text Add to dashboard Cite

In Part II of this series of articles, the transient thermal model, which was introduced in Part I, is used to explore the effects of welding conditions on the heat generation and temperature. FSW of the 6061-T651 aluminum alloy is modeled to demonstrate the model. The following two steps are adopted to study the influence of welding conditions on the heat generation and temperature. First, the thermal model is used to compute the heat generation and temperature for different welding conditions, the calculated results are compared with the reported experimental temperature, and a good agreement is observed. Second, the analytical method is used to explore the approximate functions describing the effect of welding conditions on the heat generation and temperature. Based on the computed results, we discuss the relationship between the welding conditions, heat generation, temperature, and friction coefficient, and propose a relationship map between them for the first time at the end.

show abstract

“…[7][8][9][10][11][12][13][14][15] For example, Scialpi et al [11] reported that the best FSW 6082Al joint was produced by a shoulder with fillet and cavity. However, the investigation by Fujii et al [10] indicated that the tool shape did not affect the mechanical properties of FSW 6061Al-T651 joints significantly. However, they did not give a detailed explanation.…”

Section: Introductionmentioning

confidence: 97%

Influence of Tool Dimension and Welding Parameters on Microstructure and Mechanical Properties of Friction-Stir-Welded 6061-T651 Aluminum Alloy

Liu

2008

Metall Mater Trans A

165

View full text Add to dashboard Cite

Six-millimeter-thick 6061Al-T651 plates were friction stir welded with varied welding parameters and tool dimensions. The low hardness zones (LHZs), determined by constructing the hardness distribution maps around the heat-affected zones, changed the location and inclination with the welding conditions, but the hardness values of the LHZs were mainly dependent on the welding speed. The thermal cycles experienced by the LHZs had approximately the same peak temperature of 360°C to 370°C with varied durations that were governed by the welding speed. The microstructure of the LHZs was characterized by a low density of b¢ precipitates, which tended to reduce with increasing the welding speed. The fracture of the welds occurred along the LHZs, and the tensile strength of the welds increased with increasing the welding speed and was independent of the tool dimension and the rotation rate. A heat source zone-isothermal dissolution layer model was proposed to explain the observed effects.

show abstract

Effect of Threads on Tool in Friction Stir Welding of Aluminum Alloys

Cited by 15 publications

References 8 publications

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

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

A Transient Thermal Model for Friction Stir Weld. Part II: Effects of Weld Conditions

Influence of Tool Dimension and Welding Parameters on Microstructure and Mechanical Properties of Friction-Stir-Welded 6061-T651 Aluminum Alloy

Contact Info

Product

Resources

About