Using a Coupled Thermal/Material Flow Model to Predict Residual Stress in Friction Stir Processed AlMg9Si

2015 ◽  
Vol 24 (3) ◽  
pp. 1305-1312 ◽  
Author(s):  
C. Hamilton ◽  
M. St. Węglowski ◽  
S. Dymek ◽  
P. Sedek
Keyword(s):  
Residual Stress ◽  
Material Flow ◽  
Flow Model ◽  
Friction Stir

scholarly journals A Coupled Thermal/Material Flow Model of Friction Stir Welding Applied to Sc-Modified Aluminum Alloys

2012 ◽  
Vol 44 (4) ◽  
pp. 1730-1740 ◽  
Author(s):  
Carter Hamilton ◽  
Mateusz Kopyściański ◽  
Oleg Senkov ◽  
Stanislaw Dymek
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Material Flow ◽  
Flow Model ◽  
Friction Stir ◽  
Model Of Friction

scholarly journals Natural Aging Behavior Of Friction Stir Welded Al-Zn-Mg-Cu Aluminum Alloys

2015 ◽  
Vol 60 (2) ◽  
pp. 875-879
Author(s):  
I. Kalemba ◽  
M. Kopyściański ◽  
C. Hamilton ◽  
S. Dymek
Keyword(s):  
Mechanical Properties ◽  
Material Flow ◽  
Flow Model ◽  
Natural Aging ◽  
Hardness Profile ◽  
Aging Behavior ◽  
Microstructural Characteristics ◽  
Friction Stir ◽  
Joining Process

Abstract The long term natural aging behavior of friction stir welded aluminum 7136-T76 and 7042 T6 extrusions was investigated. The microstructural characteristics and mechanical properties in the as-welded and six years naturally aged conditions were studied and correlated to a coupled thermal/material flow model of the joining process. Hardness profiles for the 7136 alloy taken along the mid-plane thickness of the workpiece displayed the characteristic W-shape. With natural aging, hardness recovery occurred on both sides of the weld, but the position of the hardness minima, particularly on the advancing side, shifted away from the weld centerline. The hardness profile for the 7042 alloy displayed U-shape in the as-welded condition and W-shape after natural aging. The hardness behavior upon natural aging correlated to the temperature profile developed during welding and the degree to which phase dissolution occurred in the regions adjacent to the stir zone.

scholarly journals Temperature Monitoring and Material Flow Characteristics of Friction Stir Welded 2A14-t6 Aerospace Aluminum Alloy

Materials ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3387 ◽  
Author(s):  
Tingke Wu ◽  
Fengqun Zhao ◽  
Haitao Luo ◽  
Haonan Wang ◽  
Yuxin Li
Keyword(s):  
Friction Stir Welding ◽  
Material Flow ◽  
Flow Model ◽  
Welding Process ◽  
Temperature Monitoring ◽  
Measuring System ◽  
Welding Parameters ◽  
Friction Stir ◽  
Tool Shoulder ◽  
Tool Pin

Aiming at the problems that the temperature in the welding area of friction stir welding (FSW) is difficult to measure and the joints are prone to defects. Hence, it is particularly important to study the material flow in the welding area and improve the welding quality. The temperature of the tool shoulder and the tool pin was monitored by the wireless temperature measuring system. The finite element model of friction stir welding was established and the welding conditions were numerically simulated. The flow law of material of the friction stir welding process was studied by numerical simulation. The material flow model was established by combining the microstructure analysis results, and the forming mechanism of the defects was analyzed. The results show that the temperature in the welding zone is the highest at 1300 rpm, and the temperature at the tool shoulder is significantly higher than that at the tool pin in the welding stage. When high-rotation speeds (HRS) are chosen, the material beneath the tool shoulder tends to be extruded into the pin stirred zone (PSZ) after flowing back to the advancing side. This will cause turbulence phenomenon in the advancing side of the joint, which will easily lead to the formation of welding defects. In the future, temperature monitoring methods and the flow model of material can be used to optimize the welding parameters.

A phenomenologically based material flow model for friction stir welding

2016 ◽  
Vol 111 ◽  
pp. 321-330 ◽  
Author(s):  
E. Hoyos ◽  
D. López ◽  
H. Alvarez
Keyword(s):  
Friction Stir Welding ◽  
Material Flow ◽  
Flow Model ◽  
Friction Stir

Investigation of the material flow and texture evolution in friction-stir welded aluminum alloy

2009 ◽  
Vol 15 (6) ◽  
pp. 1027-1031 ◽  
Author(s):  
Suk Hoon Kang ◽  
Heung Nam Han ◽  
Kyu Hwan Oh ◽  
Jae-Hyung Cho ◽  
Chang Gil Lee ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Material Flow ◽  
Texture Evolution ◽  
Friction Stir

Thermo-Mechanical Modelling of Friction Stir Welding Process

2013 ◽  
Vol 774-776 ◽  
pp. 1155-1159 ◽  
Author(s):  
Xiao Cong He
Keyword(s):  
Finite Element Analysis ◽  
Friction Stir Welding ◽  
Mechanical Behaviour ◽  
Material Flow ◽  
Welding Process ◽  
Element Analysis ◽  
Friction Stir ◽  
Mechanical Modelling ◽  
Major Factors ◽  
Realistic Prediction

Friction stir welding (FSW) is a solid-state welding process where no gross melting of the material being welded takes place. Numerical modelling of the FSW process can provide realistic prediction of the thermo-mechanical behaviour of the process. Latest literature relating to finite element analysis (FEA) of thermo-mechanical behaviour of FSW process is reviewed in this paper. The recent development in thermo-mechanical modelling of FSW process is described with particular reference to two major factors that influence the performance of FSW joints: material flow and temperature distribution. The main thermo-mechanical modelling used in FSW process are discussed and illustrated with brief case studies from the literature.

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