Fully coupled thermo-mechanical finite element modeling of friction stir processing of super duplex stainless steel

2021 ◽  
Vol 112 (11-12) ◽  
pp. 3485-3500
Author(s):  
Md. Eyasin Arafat ◽  
Fadi Al Badour ◽  
Neçar Merah
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Finite Element Modeling ◽  
Duplex Stainless Steel ◽  
Friction Stir Processing ◽  
Super Duplex Stainless Steel ◽  
Friction Stir ◽  
Element Modeling ◽  
Fully Coupled

Evaluation of plastic zone development in WE43 magnesium alloy upon friction stir processing using finite element modeling

2016 ◽  
Vol 673 ◽  
pp. 178-184 ◽  
Author(s):  
Celena A. Lipscomb ◽  
Aleksandra Fortier ◽  
Fanrong Kong ◽  
Shamiparna Das ◽  
Nilesh Kumar ◽  
...  
Keyword(s):  
Finite Element ◽  
Magnesium Alloy ◽  
Plastic Zone ◽  
Finite Element Modeling ◽  
Friction Stir Processing ◽  
Friction Stir ◽  
Element Modeling ◽  
Zone Development ◽  
We43 Magnesium Alloy

scholarly journals Finite Element Modeling of Residual Stress at Joint Interface of Titanium Alloy and 17-4PH Stainless Steel

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 629
Author(s):  
Nana Kwabena Adomako ◽  
Sung Hoon Kim ◽  
Ji Hong Yoon ◽  
Se-Hwan Lee ◽  
Jeoung Han Kim
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stainless Steel ◽  
Finite Element Modeling ◽  
Equivalent Stress ◽  
Stress Gradient ◽  
Joint Interface ◽  
Element Modeling ◽  
Actual Experiment ◽  
Maximum Equivalent Stress

Residual stress is a crucial element in determining the integrity of parts and lifetime of additively manufactured structures. In stainless steel and Ti-6Al-4V fabricated joints, residual stress causes cracking and delamination of the brittle intermetallic joint interface. Knowledge of the degree of residual stress at the joint interface is, therefore, important; however, the available information is limited owing to the joint’s brittle nature and its high failure susceptibility. In this study, the residual stress distribution during the deposition of 17-4PH stainless steel on Ti-6Al-4V alloy was predicted using Simufact additive software based on the finite element modeling technique. A sharp stress gradient was revealed at the joint interface, with compressive stress on the Ti-6Al-4V side and tensile stress on the 17-4PH side. This distribution is attributed to the large difference in the coefficients of thermal expansion of the two metals. The 17-4PH side exhibited maximum equivalent stress of 500 MPa, which was twice that of the Ti-6Al-4V side (240 MPa). This showed good correlation with the thermal residual stress calculations of the alloys. The thermal history predicted via simulation at the joint interface was within the temperature range of 368–477 °C and was highly congruent with that obtained in the actual experiment, approximately 300–450 °C. In the actual experiment, joint delamination occurred, ascribable to the residual stress accumulation and multiple additive manufacturing (AM) thermal cycles on the brittle FeTi and Fe2Ti intermetallic joint interface. The build deflected to the side at an angle of 0.708° after the simulation. This study could serve as a valid reference for engineers to understand the residual stress development in 17-4PH and Ti-6Al-4V joints fabricated with AM.

Surface Characterization of Incoloy 825 Ni-Based Alloy/2507 Super Duplex Stainless Steel Dissimilar Friction Stir Welds

CORROSION ◽  
10.5006/2755 ◽  
2018 ◽  
Vol 74 (11) ◽  
pp. 1259-1271 ◽  
Author(s):  
Jalal Kangazian ◽  
Morteza Shamanian ◽  
Ali Ashrafi
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Surface Characterization ◽  
Electrochemical Impedance ◽  
Friction Stir Weld ◽  
General Corrosion ◽  
Super Duplex Stainless Steel ◽  
Friction Stir ◽  
Surface Corrosion ◽  
Incoloy 825

Surface features of a dissimilar friction stir weld between Incoloy 825 Ni-based alloy and SAF 2507 super duplex stainless steel were investigated using scanning electron microscopy, microhardness test, cyclic potentiodynamic polarization, and electrochemical impedance spectroscopy. The surface of the weldment showed lower general corrosion resistance in comparison to the base metals. Areas under the weld shoulder exhibited weak pitting resistance because of the deformed structure and/or chromium nitride precipitates. Incoloy 825 located under the shoulder also displayed the highest susceptibility to pit growth because of the austenite matrix containing titanium nitride phases. Overall, the obtained results demonstrated that the friction stir welding method could significantly deteriorate the surface corrosion behavior of the processed regions.

scholarly journals Microstructure and mechanical properties of friction stir welded 8 mm pipe SAF 2507 super duplex stainless steel

2019 ◽  
Vol 8 (1) ◽  
pp. 243-249 ◽  
Author(s):  
Rafael Arthur Reghine Giorjão ◽  
Victor Ferrinho Pereira ◽  
Maysa Terada ◽  
Eduardo Bertoni da Fonseca ◽  
Ricardo Reppold Marinho ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Super Duplex Stainless Steel ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties

Coupled Eulerian Lagrangian finite element modeling of friction stir welding processes

2013 ◽  
Vol 213 (8) ◽  
pp. 1433-1439 ◽  
Author(s):  
Fadi Al-Badour ◽  
Nesar Merah ◽  
Abdelrahman Shuaib ◽  
Abdelaziz Bazoune
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Finite Element Modeling ◽  
Friction Stir ◽  
Element Modeling ◽  
Lagrangian Finite Element ◽  
Welding Processes

scholarly journals Finite Element Modeling of Friction Stir Welding in Aluminum Alloys Joint

2013 ◽  
Vol 18 (2) ◽  
pp. 122-131 ◽  
Author(s):  
Binnur Kıral ◽  
Mustafa Tabanoğlu ◽  
H. Serindağ
Keyword(s):  
Finite Element ◽  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Finite Element Modeling ◽  
Friction Stir ◽  
Element Modeling
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