Numerical modelling and experimental investigation of thermal and material flow in probeless friction stir spot welding process of Al 2198-T8

2018 ◽  
Vol 23 (8) ◽  
pp. 704-714 ◽  
Author(s):  
Xiawei Yang ◽  
Wuyuan Feng ◽  
Wenya Li ◽  
Yaxin Xu ◽  
Qiang Chu ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Numerical Modelling ◽  
Material Flow ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir

Experimental investigation and numerical simulation of the friction stir spot welding process

Mechanika ◽  
2016 ◽  
Vol 22 (1) ◽  
Author(s):  
S. Kilikevičius ◽  
R. Česnavičius ◽  
P. Krasauskas ◽  
R. Dundulis ◽  
J. Jaloveckas
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir

Visualization of Material Flow in the Refill Friction Stir Spot Welding Process

2006 ◽  
Author(s):  
S. K. Itapu ◽  
K. H. Muci-Küchler
Keyword(s):  
Material Flow ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir

Experimental Investigation on the Friction Stir Spot Welding Process of Non-Ferrous Metals

2016 ◽  
Vol 251 ◽  
pp. 25-29
Author(s):  
Povilas Krasauskas ◽  
Sigitas Kilikevičius ◽  
Ramūnas Česnavičius ◽  
Julius Jaloveckas
Keyword(s):  
Experimental Investigation ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Experimental Setup ◽  
Review Of The Literature ◽  
Friction Stir ◽  
Ferrous Metals ◽  
Thin Walled ◽  
Non Ferrous Metals

This article presents an experimental investigation of the friction stir spot welding process in thin-walled plates by using a special HSS tool. A review of the literature dealing with the analyzed problem was conducted and the experimental setup for FSSW experiments was described. The experiments were carried out on non-ferrous 5754 aluminum alloy, copper M2 and brass CuZn37. Variations of experimental axial force were obtained.

Electrically Assisted Friction Stir Spot Welding of Aluminum Alloy to Advanced High Strength Steel

2017 ◽  
Author(s):  
Kai Chen ◽  
Xun Liu ◽  
Jun Ni
Keyword(s):  
Aluminum Alloy ◽  
Material Flow ◽  
Spot Welding ◽  
Aluminum Matrix ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Steel Matrix ◽  
Friction Stir ◽  
Lap Shear ◽  
Electrically Assisted

This paper studies an electrically assisted friction stir spot welding (FSSW) process for joining aluminum alloy 6061-T6 to TRIP 780 steel. The electrical current shows to reduce the axial plunge force and assist the material flow of the aluminum matrix during the welding process. When electrical pulses and direct current (DC) with the same energy input are applied, the results show insignificant differences. Bulk material flow can be observed in the weld cross sections. A more uniform hook is generated at the Fe/Al interface after applying the current. Besides, the diffusion of aluminum atoms into the steel matrix is enhanced. Regarding the weld quality, electrically assisted FSSW improves the joint lap shear strength when compared with regular FSSW process.

Visualization of Material Flow in a Refill Friction Stir Spot Welding Process Using Marker Materials

2010 ◽  
Vol 3 (1) ◽  
pp. 628-651 ◽  
Author(s):  
Sindhura Kalagara ◽  
Karim Heinz Muci-Kuchler ◽  
William Arbegast
Keyword(s):  
Material Flow ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir

Friction Stir Spot Welding Phenomena in Al Alloy 6061

2010 ◽  
Vol 638-642 ◽  
pp. 1243-1248
Author(s):  
Yutaka S. Sato ◽  
Mitsuo Fujimoto ◽  
Natsumi Abe ◽  
Hiroyuki Kokawa
Keyword(s):  
Material Flow ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Al Alloy ◽  
Spiral Flow ◽  
Friction Stir ◽  
Fundamental Knowledge ◽  
Tool Rotation ◽  
Alloy 6061

Friction stir spot welding (FSSW), developed based on principle of friction stir welding, has been paid attention as a new solid-state spot welding process. Since FSSW can produce high-quality weld in Al alloys more easily than resistance spot welding, this process has been already used for construction of Al components in the automotive industries. Despite the large industrial interests in FSSW, fundamental knowledge on welding phenomena of this process has not been fully understood. In this study, FSSW phenomena, such as the consolidation mechanism, the microstructural evolution and the material flow, were examined in Al alloy 6061. This study clarified that the elliptical zone found in the vicinity of the pin hole on the cross section was characterized by the initially lapped surface of two sheets. Moreover, the following material flow was proposed; capture of the upper material with the threads on the pin surface, spiral flow along the tool rotation, and then release at the tip of the pin.

Material Flow Tracking for Various Tool Geometries During the Friction Stir Spot Welding Process

2013 ◽  
Vol 22 (12) ◽  
pp. 3674-3683 ◽  
Author(s):  
Yuan-Ching Lin ◽  
Ju-Jen Liu ◽  
Jiun-Nan Chen
Keyword(s):  
Material Flow ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir ◽  
Tool Geometries

Experimental investigation of material flow during friction stir spot welding

2010 ◽  
Vol 15 (8) ◽  
pp. 666-670 ◽  
Author(s):  
S. Horie ◽  
K. Shinozaki ◽  
M. Yamamoto ◽  
T. H. North
Keyword(s):  
Experimental Investigation ◽  
Material Flow ◽  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Friction Stir

scholarly journals A fully coupled thermo-mechanical numerical modelling of the refill friction stir spot welding process in Alclad 7075-T6 aluminium alloy sheets

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Andrzej Kubit ◽  
Tomasz Trzepiecinski
Keyword(s):  
Numerical Modelling ◽  
Aluminium Alloy ◽  
Spot Welding ◽  
Numerical Models ◽  
Weld Zone ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Welding Parameters ◽  
Friction Stir ◽  
Fully Coupled

Abstract Refill friction stir spot welding (RFSSW) is a solid state joining technology that has the potential to replace processes such as the open-air fusion bonding technique and rivet technology in aerospace applications. Selection of proper RFSSW parameters is a crucial task which is important to ensure the mechanical strength of the joint. The aim of this paper is to undertake numerical modelling of the RFSSW process to understand the physics of the welding process, which involves large deformations, complex contact conditions and steep temperature gradients. Three-dimensional fully coupled thermo-mechanical models of RFSSW joints between Alclad 7075-T6 aluminium alloy sheets have been built in the finite-element-based program Simufact Forming. The simulation results included the temperature distribution and the stress and strain distributions in the overlap joint. The results of numerical computations have been compared with experimental ones. The numerical model was able to predict the mechanics of material flow during the joining of sheets of Alclad aluminium alloys using RFSSW. The predictions of the temperature gradient in the weld zone were in good agreement with the temperature measured experimentally. The numerical models that have been built are capable of simulating RFSSW to reduce the number of experiments required to set optimal welding parameters.

Friction Stir Spot Welding-Process and Weld Properties: A Review

2021 ◽  
Author(s):  
Chaitanya Sharma ◽  
Ajay Tripathi ◽  
Vikas Upadhyay ◽  
Vijay Verma ◽  
Sumit K. Sharma
Keyword(s):  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Friction Stir ◽  
Weld Properties
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