scholarly journals Determination of the Mechanical Properties of Friction Welded Tube Yoke and Tube Joint

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Efe Işık ◽  
Çiçek Özes
Keyword(s):  
Tensile Strength ◽  
Friction Welding ◽  
Welded Joint ◽  
Fatigue Tests ◽  
Commercial Vehicles ◽  
Base Materials ◽  
Torsional Fatigue ◽  
Welding Interface ◽  
Load Carrying ◽  
Welded Tube

This paper deals with the friction welding of the tube yoke and the tube of the drive shaft used in light commercial vehicles. Tube yoke made from hot forged microalloyed steel and the tube made from cold drawn steel, with a ratio (thickness/outside diameter ratio) of less than 0.1, were successfully welded by friction welding method. Hardness distributions on both sides of the welded joint across the welding interface were determined and the microstructure of the joint was investigated. Furthermore, joint strength was tested under tensile, static torsional, and torsional fatigue loadings. The tested data were analyzed by Weibull distribution. The maximum hardness value along the welded joint was detected as 553 Hv1. The lowest detected tensile strength of the joint was 13% less than the base materials’ tensile strength. The torsional load carrying capacity of the friction welded thin walled tubular joint without any damage was obtained as 4.252,5 Nm in 95% confidence interval. After conducting fully reversed torsional fatigue tests, the fatigue life of friction welded tubular joints was detected as 220.066,3 cycles.

Enhancements on dissimilar friction stir welding between AZ31 and SPHC mild steel with Al-Mg as powder additives

2021 ◽  
pp. 1-22
Author(s):  
Mohd Ridha Muhamad ◽  
Sufian Raja ◽  
Mohd Fadzil Jamaludin ◽  
Farazila Yusof ◽  
Yoshiaki Morisada ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Mild Steel ◽  
Welding Speed ◽  
Welded Joint ◽  
Microstructural Analysis ◽  
Welding Process ◽  
Dissimilar Materials ◽  
Friction Stir ◽  
Welding Interface

Abstract Dissimilar materials joining between AZ31 magnesium alloy and SPHC mild steel with Al-Mg powder additives were successfully produced by friction stir welding process. Al-Mg powder additives were set in a gap between AZ31 and SPHC specimen's butt prior to welding. The experiments were performed for different weight percentages of Al-Mg powder additives at welding speeds of 25 mm/min, 50 mm/min and 100 mm/min with a constant tool rotational speed of 500 rpm. The effect of powder additives and welding speed on tensile strength, microhardness, characterization across welding interface and fracture morphology were investigated. Tensile test results showed significant enhancement of tensile strength of 150 MPa for 10% Al and Mg (balance) powder additives welded joint as compared to the tensile strength of 125 MPa obtained for welded joint without powder additives. The loss of aluminium in the alloy is compensated by Al-Mg powder addition during welding under a suitable heat input condition identified by varying welding speeds. Microstructural analysis revealed that the Al-Mg powder was well mixed and dispersed at the interface of the joint at a welding speed of 50 mm/min. Intermetallic compound detected in the welding interface contributed to the welding strength.

J0470105 Effect of friction welding condition on tensile strength of friction welded joint between Ti-6Al-4V and low carbon steel

2015 ◽  
Vol 2015 (0) ◽  
pp. _J0470105--_J0470105-
Author(s):  
Masaaki KIMURA ◽  
Tsukasa IIJIMA ◽  
Masahiro KUSAKA ◽  
Koichi KAIZU ◽  
Akiyoshi FUJI ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Steel ◽  
Friction Welding ◽  
Welded Joint ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Welding Condition

Tensile Strength of Weld Joint Produced by Spinning Friction Welding of Round Aluminum A6061 with Various Chamfer Angles

2012 ◽  
Vol 576 ◽  
pp. 761-765 ◽  
Author(s):  
Yudy Surya Irawan ◽  
Marsoedi Wirohardjo ◽  
Mochamad Syamsul Ma’arif
Keyword(s):  
Tensile Strength ◽  
Weld Joint ◽  
Friction Welding ◽  
High Strength ◽  
Strength Test ◽  
Base Metals ◽  
Minimum Area ◽  
Tensile Strength Test ◽  
Base Materials ◽  
Friction Weld

Tensile strength of Aluminum A6061 joint produced by spinning friction welding (SFW) with various chamfer angles was studied. Tensile strength test specimens that have weld joint part at their centers were machined from spinning friction welded base metals. SFW specimens were prepared by making various chamfer angles of 15, 30, 45, 60, 75 degree and without chamfer angle on both contact-surfaces of base materials. It was found that chamfer angle affected tensile strength of weld joint of Aluminum A6061. Base materials with chamfer angle of 30 degree resulted in specimen that had the maximum tensile strength of friction weld joint. From the result of macrostructure evaluation, it was found that high strength in these specimens was due to the maximum area of fully plasticized zone, minimum porosity and minimum area of heat-affected zone.

scholarly journals Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper

2018 ◽  
Vol 5 (2) ◽  
pp. 17-00398-17-00398 ◽  
Author(s):  
Masaaki KIMURA ◽  
Yuusuke INUI ◽  
Masahiro KUSAKA ◽  
Koichi KAIZU
Keyword(s):  
Tensile Strength ◽  
Friction Welding ◽  
Welded Joint ◽  
Pure Copper ◽  
Al Alloy

scholarly journals Influence of Crystal Structure of Nitride Compound Layer on Torsion Fatigue Strength of Alloy Steel

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1352 ◽  
Author(s):  
Yoshitomi Yamada ◽  
Eto Hirohito ◽  
Koji Takahashi
Keyword(s):  
Crystal Structure ◽  
Fatigue Strength ◽  
Crystal Structures ◽  
Alloy Steel ◽  
High Strength ◽  
Compound Layer ◽  
Fatigue Tests ◽  
Commercial Vehicles ◽  
Torsional Fatigue ◽  
Number Of Cycles

The demand for high-strength components for commercial vehicles has recently increased. Conventional gas nitrocarburizing has been used to increase strength and productivity of the crankshaft. A potential-controlled nitriding process was recently developed to control the crystal structure of the nitride compound layer. It has been found that this treatment improves the bending fatigue strength compared with conventional treatment, and has the potential to cope with the increase in crankshaft strength. However, the effect of torsional fatigue strength has not been studied. Therefore, in this study, the influence of the crystal structure of the nitride compound layer on torsional fatigue strength was investigated. Two kinds of test specimens with different crystal structures of the compound layer were prepared using gas nitriding treatment with controlled nitriding potential for an alloy steel bar (JIS-SCM435). Torsional fatigue tests were carried out using these test specimens. Although the compound layer of these test specimens had different crystal structures, the hardness distribution and residual stress distribution on the diffusion layer were almost the same. The relationship between stress amplitude and number of cycles to failure (S-N curve) showed that the torsional fatigue limits of the specimens were almost the same. This indicates that the crystal structure of the nitride compound layer did not affect the torsional fatigue limits, because the origin of the torsional fatigue failure is inside the specimen.

Influence of the rotary friction welding parameters on the microhardness and joint strength of Ti6Al4V alloys

2020 ◽  
pp. 095440542097254
Author(s):  
Ho Thi My Nu ◽  
Nguyen Huu Loc ◽  
Luu Phuong Minh
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Friction Welding ◽  
Welded Joint ◽  
Welding Parameters ◽  
High Tensile Strength ◽  
Axial Pressure ◽  
Grain Structures ◽  
Rotary Friction Welding ◽  
Friction Pressure

In this study, Ti6Al4V rods were butt-welded by rotary friction welding. The experimental results show that the weld quality, in terms of the tensile strength and hardness, decreases radially. Therefore, the radius of the welded parts that are viable for rotating friction welding is limited because the areas located far from the centre of the axis have poor mechanical properties. The parameter that impacts the tensile strength and microhardness the most during rotary friction welding of Ti6Al4V is the axial pressure, which includes the friction pressure and forging pressure. A high forging pressure produces fine, equiaxed, and recrystallized grain structures in the welded joint, resulting in a high tensile strength and microhardness. In addition, an increased forging pressure can be used in rotary friction welding to reduce the radial differences in the mechanical properties of the welded joints.

Sign in / Sign up

Export Citation Format

Share Document