scholarly journals ANALISIS PENGARUH PARAMETER PENGELASAN GTAW PADA STAINLESS STEEL AISI 304 TERHADAP SIFAT MEKANIS DAN STRUKTUR MIKRO

POROS ◽  
2018 ◽  
Vol 15 (1) ◽  
pp. 53
Author(s):  
Tumpal Ojahan Rudy ◽  
Yusup Hendronursito ◽  
Daniel Anggi S
Keyword(s):  
Stainless Steel ◽  
Gas Flow ◽  
Hardness Test ◽  
Taguchi Methods ◽  
Rockwell Hardness ◽  
Aisi 304 ◽  
Steel Increase ◽  
Steel Aisi ◽  
Best Parameter

Abstract: Stainless steel common worn in industry because it has the mechanical properties of a strong, the physical properties of a good, can be recycled without reducing the quality of its constituent compound, decorative and easily cleared, resistant to corrosion, capable of preventing contamination so that the use of stainless steel increase significantly. The use of stainless steel can not be separated from the process of welding, hence writer do research by varying discharge a stream of gas (13,17,21 liter per minute), current (70,130,180 ampere) And types of electrodes (EWLa-1.5, EWTh-2, EWCe-2) With the design Taguchi L9. The purpose of research to know the influence of parameter against the force pull, violence and structure micro, using of GTAW welding with Taguchi methods. The results of tensile test: yield stress dust the highest to parameter stream of gas 17 liters per minutes, the current 70 ampere, electrodes EWLa-1.5 gold with the 387 MPa, maximum stress to the flow of gas 21 liters per minutes, the current 70 ampere, electrodes EWLa-1.5 gold with the 648 MPa and strain to the low of gas 17 liters per minutes, the current 70 ampere, electrodes EWTh-2 red with the 62,2 %. The Rockwell hardness regional of weld to gas flow is 17 liters per minutes, the current 130 ampere, electrodes EWCe-2 grey the hardness poin is 74,2 HRb. Regional HAZ to the gas flow is17 liters per minutes, the current 180 ampere, electrodes EWLa-1.5 gold of 77,3 HRb. Best parameter with the taguchi method to tensile streng of gas flow 21 liter per minutes, the current 70 ampere and types of electrodes EWLa-1.5. Against rockwell hardness test (HRb) found in a stream of gas 17 liter per minutes, the current 130 ampere and types of electrodes EWCe-2.The phase that is formed before welding at micro structure is the phase austenite and the crom, nickel through welding there are adding the phase carbide crom, only the size of the widening weld and haz different. 

Mechanic, Metalurgic and Factografic Characterization of a Composite of Microalloyed Steel (API X65) Cladded With Austenitic Stainless Steel (AISI 308L)

2006 ◽  
Author(s):  
Carlos R. da Cunha ◽  
Telmo R. Strohaecker
Keyword(s):  
Stainless Steel ◽  
Hardness Test ◽  
Offshore Structures ◽  
Fatigue Tests ◽  
Mechanical Resistance ◽  
Bending Tests ◽  
Internal Surfaces ◽  
Steel Aisi

In some offshore structures, pipes with good mechanical resistance and internal surfaces that have also good corrosion resistance are necessary. To associate these properties, one possibility is to make a cladding process in the pipe. To evaluate this kind of composite, a pipe (API X65) was clad with stainless steel (ASTM 308L) by GMAW process and sectioned in several specimens for different analyses. The work starts qualifying the quality of the composite with bending tests. The load that was recorded in this test was the guide to three-point-fatigue tests that gave us the possibility to plot an S-N curve. The tension was the most tensioned point in the specimen. To verify the metallographic conditions of both materials and the interface, metallographic analyses with a transversal cut in the specimens and hardness test across the composite were accomplished. The fatigue tested specimens were submitted to fracture analyses to know how the failure occurs. These analyses contain photos of the specimen’s fracture - showing the origin of the failure, a metallographic of the specimen’s interface to check undesired microstructures that could cause a failure and micrographs of the most tensioned point of the specimen to check the initial failure mechanism. The results in the following work show a good way of cladding process.

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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