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| Content Provider | Springer Nature Link |
|---|---|
| Author | Badheka, Vishvesh J. Basu, Ritwik Omale, Joseph Szpunar, Jerzy |
| Copyright Year | 2016 |
| Abstract | The present study reports microstructural characteristics of two grades of steels, stainless steel (SS 304) and carbon steel welded using tungsten inert gas (TIG) and activated flux-TIG (A-TIG) processes. Activated fluxes such as TiO$_{2}$, ZnO and MnO$_{2}$ are effective for A-TIG welding of dissimilar weld between carbon steel to stainless steel. Mechanical properties, joint efficiency of A-TIG welds are found to be higher than normal TIG Welds. This study attempts to establish a correlation between observed mechanical behavior (hardness and strength) and the microstructural characteristics of the weld samples. Significant differences in microstructures are recorded in terms of grain size, local misorientation, grain and phase boundary characteristics in distinct regions of the welded samples. The microstructural observations exhibit: (1) the presence of Widmanstatten ferrite structure at the heat affected zone of the carbon steel part in the A-TIG welded specimen and (2) differences in structure at the interface of stainless steel and weld metal region under the two conditions of welding. These structures are morphologically different and shows differences in the number fraction of 45° <114> phase boundary orientation relationship. The microstructure also displays significant heterogeneity in grain size and grain misorientation. |
| Starting Page | 1765 |
| Ending Page | 1773 |
| Page Count | 9 |
| File Format | |
| ISSN | 09722815 |
| Journal | Transactions of the Indian Institute of Metals |
| Volume Number | 69 |
| Issue Number | 9 |
| e-ISSN | 09751645 |
| Language | English |
| Publisher | Springer India |
| Publisher Date | 2016-03-02 |
| Publisher Place | New Delhi |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Tungsten inert gas (TIG) welding Activated flux-TIG (A-TIG) welding Electron backscattered diffraction (EBSD) Local average misorientation Orientation relationship Grain boundary characteristics Metallic Materials Materials Science Tribology, Corrosion and Coatings |
| Content Type | Text |
| Resource Type | Article |
| Subject | Metals and Alloys |
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