Activated flux TIG welding of austenitic stainless steels

2020 ◽  
Vol 9 (4) ◽  
pp. 1041-1055
Author(s):  
Memduh Kurtulmuş
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Tig Welding ◽  
Activated Flux

Evaluation of the occurrence of mechanical constriction of the Arc in A-TIG welding of austenitic stainless steels

2017 ◽  
Vol 32 (3) ◽  
pp. 188-199
Author(s):  
Guilherme S. Pandolfi ◽  
Felipe G. Pinheiro Rodrigues ◽  
Paulo J. Modenesi
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Tig Welding ◽  
A Tig Welding

Advances in Fusion Welding Technique of Austenitic Stainless Steels

2011 ◽  
Vol 480-481 ◽  
pp. 527-532 ◽  
Author(s):  
Kuang Hung Tseng ◽  
Hsiang Lin Sung
Keyword(s):  
Stainless Steel ◽  
Aspect Ratio ◽  
Austenitic Stainless Steels ◽  
Tig Welding ◽  
Fusion Welding ◽  
Experimental Result ◽  
Delta Ferrite ◽  
Steel Weld Metal ◽  
Stainless Steel Weld Metal ◽  
Activated Flux

Activated flux assisted tungsten inert gas (TIG) welding of austenitic 316L stainless steel was investigated. Autogenous TIG welding was used to produce a bead-on-plate weld. The FeO, FeS, and FeF2 were selected as the flux powders. The results showed that the FeS and FeO fluxes produced high aspect ratio welds, while the FeF2 flux produced a relatively low aspect ratio weld. The undercut defect was produced with use of the FeS flux. An experimental result suggested the constriction of arc column as a mechanism in improving activated TIG penetration. In addition, activated TIG process can increase the delta-ferrite content in austenitic stainless steel weld metal.

Investigations on structure–property relationships of activated flux TIG weldments of super-duplex/austenitic stainless steels

2015 ◽  
Vol 638 ◽  
pp. 60-68 ◽  
Author(s):  
K. Devendranath Ramkumar ◽  
Ankur Bajpai ◽  
Shubham Raghuvanshi ◽  
Anshuman Singh ◽  
Aditya Chandrasekhar ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Structure Property ◽  
Structure Property Relationships ◽  
Activated Flux

scholarly journals The Similar and Dissimilar TIG Welding of 316L and 321 Austenitic Stainless Steels

2019 ◽  
Vol 1 (3) ◽  
pp. 148-155
Author(s):  
Özgür ÇINAR ◽  
Mehmet Can YARALI ◽  
Ertan ERDEMİR ◽  
Burcu Nilgün ÇETİNER ◽  
Ayhan MERGEN ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Tig Welding

Radiation Damage Studies with the HVEM

1972 ◽  
Vol 30 ◽  
pp. 680-681
Author(s):  
J. J. Laidler ◽  
B. Mastel
Keyword(s):  
Radiation Damage ◽  
Stainless Steels ◽  
Volume Expansion ◽  
Austenitic Stainless Steels ◽  
Test Facility ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Under Construction ◽  
Development Laboratory ◽  
Insight Into

One of the major materials problems encountered in the development of fast breeder reactors for commercial power generation is the phenomenon of swelling in core structural components and fuel cladding. This volume expansion, which is due to the retention of lattice vacancies by agglomeration into large polyhedral clusters (voids), may amount to ten percent or greater at goal fluences in some austenitic stainless steels. From a design standpoint, this is an undesirable situation, and it is necessary to obtain experimental confirmation that such excessive volume expansion will not occur in materials selected for core applications in the Fast Flux Test Facility, the prototypic LMFBR now under construction at the Hanford Engineering Development Laboratory (HEDL). The HEDL JEM-1000 1 MeV electron microscope is being used to provide an insight into trends of radiation damage accumulation in stainless steels, since it is possible to produce atom displacements at an accelerated rate with 1 MeV electrons, while the specimen is under continuous observation.

Strain-induced martensite effects on transgranular carbide precipitation in type 304 stainless steels

1991 ◽  
Vol 49 ◽  
pp. 604-605
Author(s):  
A.H. Advani ◽  
L.E. Murr ◽  
D. Matlock
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Deformation Twin ◽  
Austenitic Stainless Steels ◽  
Carbide Precipitation ◽  
Strain Induced Martensite ◽  
Type 304

Thermomechanically induced strain is a key variable producing accelerated carbide precipitation, sensitization and stress corrosion cracking in austenitic stainless steels (SS). Recent work has indicated that higher levels of strain (above 20%) also produce transgranular (TG) carbide precipitation and corrosion simultaneous with the grain boundary phenomenon in 316 SS. Transgranular precipitates were noted to form primarily on deformation twin-fault planes and their intersections in 316 SS.Briant has indicated that TG precipitation in 316 SS is significantly different from 304 SS due to the formation of strain-induced martensite on 304 SS, though an understanding of the role of martensite on the process has not been developed. This study is concerned with evaluating the effects of strain and strain-induced martensite on TG carbide precipitation in 304 SS. The study was performed on samples of a 0.051%C-304 SS deformed to 33% followed by heat treatment at 670°C for 1 h.

Oxidation behavior of 26Cr-16Ni and AISI 309 austenitic stainless steels in air flow at 1,173 K

2015 ◽  
Vol 57 (7-8) ◽  
pp. 597-601 ◽  
Author(s):  
Peeraya Pipatnukun ◽  
Panyawat Wangyao ◽  
Gobboon Lothongkum
Keyword(s):  
Stainless Steels ◽  
Oxidation Behavior ◽  
Air Flow ◽  
Austenitic Stainless Steels
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