Effect of Welding Passes on Heat Affected Zone and Tensile Properties of AISI 304 Stainless Steel and Chrome-Manganese Austenitic Stainless Steel

Taiwade, Ravindra V.; Patil, Awanikumar P.; Ghugal, Ravindra D.; Patre, S. J.; Dayal, R. K.

doi:10.2355/isijinternational.53.102

Cited by 35 publications

(26 citation statements)

References 11 publications

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“…Microstructures with partially ditched grain boundaries represent dual structures while one or more grains completely surrounded by ditches are called as ditch structures. 11,17,24,25) Degree of sensitization (DOS) was obtained using DLEPR test. Solution containing of 0.5 M H2SO4 + 0.01 M NH4SCN (at room temperature, 27°C) was used to perform DLEPR test.…”

Section: Methodsmentioning

confidence: 99%

“…The EPMA line scans across the grain boundary was obtained in conjunction with SEM using JEOL 8600M Electron Probe Micro analyzer. 11,30) The scan was performed for a set of 30 data points and unit data point corresponds to 1 nm. The EPMA data was processed using "ORIGIN PRO 8" software.…”

Section: Methodsmentioning

confidence: 99%

“…8,9) 200-series SS are also referred as "chrome-manganese stainless steel (Cr-Mn SS) consisting Mn as an austenitic stabilizer which replaces the major constituent Ni. 1,6,[10][11][12] Therefore, future will place greater demands on 200-series alloys in replacement of 300-series as an economical substitute.Similar to 300-series steels, Cr-Mn stainless steels are also subjected to various fabrication processes like welding, hot rolling, cold working, solution annealing or stress relieving and during these practices a very high temperature exposure leads to change in grain size. 13) This alteration in grain size has a major influence on the intergranular corrosion (IGC) due to sensitization.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Grain Size on Degree of Sensitization of Chrome-Manganese Stainless Steel

et al. 2013

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The use of chrome-manganese stainless steels (Cr-Mn SSs) of 200-series grade has tremendously increased in past few years in various applications like construction, home accessories, office appliances, light poles etc. Their mechanical properties, weldability and corrosion/oxidation resistance provide the best all-round performance stainless steels at relatively low cost. Therefore, they serve as an appropriate alternative to 300-series stainless steels now days. Similar to 300-series steels, Cr-Mn SSs are also submitted to various fabrication practices like welding, hot rolling, cold working, solution annealing or stress relieving processes. This leads to change in their grain size due to higher operating temperature during service. The grain size has a major influence on the intergranular corrosion (IGC) developed due to sensitization phenomena. Several investigations have been made on the influence of grain size on IGC behaviour of 300-series stainless steels, but this information about Cr-Mn SS is scanty till now. Therefore, in this paper an attempt has been made to evaluate the effect of grain growth on degree of sensitization (DOS) of Cr-Mn SS and finally concluded that the DOS decreases with increase in grain size.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Grain Size on Degree of Sensitization of Chrome-Manganese Stainless Steel

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“…Further, the grain coarsening is observed in HAZ of both the weldments but, it is more prominent towards AISI 201 side. This is attributed to the higher susceptibility of type 201 SS to form chromium carbides during welding 20) . Since, the HAZ has been heated to the temperature approaching for solidus temperature; many of the precipitates of base metal may dissolve.…”

Section: Microscopic Evaluation 321 Microstructures Of Weldments Inmentioning

confidence: 99%

Effect of Electrodes and Post Weld Solution Annealing Treatment on Microstructures, Mechanical Properties and Corrosion Resistance of Dissimilar High Nitrogen Austenitic and Conventional Austenitic Stainless Steel Weldments

2017

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In the present investigation, the dissimilar metal butt joints between low nickel high nitrogen 201 stainless steel and conventional 304 stainless steel were prepared by shielded metal arc welding process with two different llers, E308L and E309L. The effects of llers, along with variation in solution annealing temperature as 1050 C and 1100 C, on the microstructural characteristics, mechanical properties, and intergranular corrosion behaviour of dissimilar weldments were investigated. The primary δ-ferrites of fusion zone were transformed into austenite at the solution annealing temperature for both the llers and the transformation rate was accelerated with the increased solution annealing temperature. This led to a reduction in the ferritic-austenitic interface and subsequently improved the corrosion resistance. The double loop electrochemical potentiodynamic reactivation test was performed to measure the degree of sensitization. The fracture surface examination of weldments revealed the presence of a brous structure before the solution annealing treatment and demonstrated a ductile failure. After the solution annealing treatment, the ferrite to austenite transformation treatment led to a river like morphology and indicated for brittle fracture.

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“…4(d). [47][48][49] The occurrence of macro-voids depicted that the specimen had absorbed sufficient energy before getting fractured, which also assured the absence of deleterious phases in the weldments.…”

Section: Tensile Testmentioning

confidence: 99%

Effect of Pulsed Current Gas Tungsten Arc Process on the Dissimilar Weldments between Nickel-based Superalloy/Austenitic Stainless Steel

2017

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The present work aims at investigating the microstructural and mechanical properties of dissimilar welds between Superalloy C-276 and Grade 321 austenitic stainless steel sheets, fabricated by pulsed current gas tungsten arc welding. The microstructural examination was carried out using an optical microscope and scanning electron microscope (SEM) equipped with energy dispersive spectroscopy. The weld metal microstructures divulged finer equiaxed grains. SEM images revealed migrated grain boundaries adjacent to weld line on both Superalloy C-276 and Grade 321. In addition, the presence of Mo-rich phases was also observed in the weld metal and at the weld interface of Superalloy C-276, which needs further investigation. Mechanical tests were carried out with respect to microhardness, tensile and impact properties. Furthermore, the presence of finer dendritic structure and controlled distribution of elements obtained with PCGTAW contributed for higher corrosion resistance of WM compared to BMs. The results of the present study would help in obtaining high quality dissimilar joints. Moreover, Grade 321 being a low-priced material as compared to Superalloy C-276 would be an economical substitution and would facilitate in saving huge material costs.

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Effect of Welding Passes on Heat Affected Zone and Tensile Properties of AISI 304 Stainless Steel and Chrome-Manganese Austenitic Stainless Steel

Cited by 35 publications

References 11 publications

Effect of Grain Size on Degree of Sensitization of Chrome-Manganese Stainless Steel

Effect of Grain Size on Degree of Sensitization of Chrome-Manganese Stainless Steel

Effect of Electrodes and Post Weld Solution Annealing Treatment on Microstructures, Mechanical Properties and Corrosion Resistance of Dissimilar High Nitrogen Austenitic and Conventional Austenitic Stainless Steel Weldments

Effect of Pulsed Current Gas Tungsten Arc Process on the Dissimilar Weldments between Nickel-based Superalloy/Austenitic Stainless Steel

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