Prediction of microstructures in laser welding of stainless steel AISI 304

1999 ◽  
Vol 11 (4) ◽  
pp. 185-189 ◽  
Author(s):  
W. Guo ◽  
A. Kar
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
Aisi 304 ◽  
Steel Aisi ◽  
Stainless Steel Aisi

scholarly journals Formability Prediction of Laser-Welded Stainless Steel AISI 304 and AISI 430

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 54
Author(s):  
Emil Evin ◽  
Miroslav Tomáš
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Laser Welding ◽  
Welded Joint ◽  
Base Material ◽  
Coarse Grained ◽  
Aisi 304 ◽  
Steel Aisi ◽  
Aisi 430 ◽  
Stainless Steel Aisi

The effect of laser welding on the mechanical properties and the prediction of formability for austenitic stainless steel AISI 304 and ferritic steel AISI 430 when welded by a YLS-5000 fiber laser, were studied in the paper. The microstructure of the welded joint was analyzed using light microscopy. The mechanical properties were determined by static tensile testing. The forming limit diagrams were produced from notched samples at R5, R17, and R25 mm. The hardness values of the welded joint and the base material were determined using the Vickers method. Samples made of AISI 430 showed that the formability suffered due to laser welding. Longitudinal coarse ferrite grains were observed in the microstructure of the AISI 430 weld metal. The coarse-grained structure of the welded joint and the continuous interface along the centerline caused the failure of the AISI 430 laser-welded samples at significantly lower actual stress and strain values than were required to break the base material. No significant changes in the formability were observed in the AISI 304 samples after laser welding. The growth of dendrites was observed in the microstructure of the AISI 304 welded joint in a direction towards the centerline of the welded joint. A comparison of the experimentally determined FLD0 values and the values calculated from predictive equations showed that a better agreement was achieved for uniform elongation than for the strain hardening exponent. The manufacturability and economic efficiency of selected parts of an exhaust system by hydromechanical drawing were evaluated on the basis of the process capability index Cpk.

Influence of Process Parameters on the Machining Characteristics of Austensite Stainless Steel (AISI 304)

2018 ◽  
Vol 5 (5) ◽  
pp. 13321-13333 ◽  
Author(s):  
A.P. Junaidh ◽  
G. Yuvaraj ◽  
Josephine Peter ◽  
V Bhuvaneshwari ◽  
Kanagasabapathi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Process Parameters ◽  
Influence Of Process Parameters ◽  
Aisi 304 ◽  
Steel Aisi ◽  
Machining Characteristics ◽  
Stainless Steel Aisi

Cationic clevelable surfactants as highly efficient corrosion inhibitors of stainless steel AISI 304: Electrochemical study

2020 ◽  
Vol 315 ◽  
pp. 113675 ◽  
Author(s):  
Marta Pakiet ◽  
Iwona Kowalczyk ◽  
Rafael Leiva Garcia ◽  
Robert Akid ◽  
Bogumił Brycki
Keyword(s):  
Stainless Steel ◽  
Corrosion Inhibitors ◽  
Electrochemical Study ◽  
Aisi 304 ◽  
Highly Efficient ◽  
Steel Aisi ◽  
Stainless Steel Aisi

Particle-Filled Polysilazane Coatings for Steel Protection

2014 ◽  
Vol 975 ◽  
pp. 149-153 ◽  
Author(s):  
Lorenço Neckel Jr. ◽  
Arthur G. Weiss ◽  
Günter Motz ◽  
Dachamir Hotza ◽  
Márcio C. Fredel
Keyword(s):  
Stainless Steel ◽  
High Temperatures ◽  
Harsh Environments ◽  
High Porosity ◽  
Transformation Behavior ◽  
Good Adherence ◽  
Aisi 304 ◽  
Steel Protection ◽  
Steel Aisi ◽  
Stainless Steel Aisi

Coatings of polysilazane-based ceramics are a promising technology for the protection of steels for applications at high temperatures and chemically harsh environments where, currently, special and expensive grades of steel are used for. To this work, the polymer-ceramic transformation behavior of VL-20 polysilazane precursor and 8%YSZ and glassceramic powders as fillers, and their variables were evaluated, and the coatings on stainless steel AISI 304 substrates were characterized. The first obtained coatings showed good adherence, but also high porosity.

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