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Title: | STUDIES ON CORROSION BEHAVIOUR OF DISSIMILAR WELDMENTS |
Authors: | Singh, Rajnish Kumar |
Issue Date: | Jun-2023 |
Publisher: | IIT, Roorkee |
Abstract: | Dissimilar-metal joints are widely used in various industrial applications due to both technical and economic reasons. The adoption of dissimilar metal combinations provides possibilities for the flexible design of the product by using each material efficiently, i.e., benefiting from the specific properties of each material in a functional way. Fusion welding is by far the most important process used in the fabrication of modern boilers. Components are joined by the formation of a molten pool of metal between them. The production of highquality welds with a high degree of consistency is readily available. However, defects are more likely to occur in the welds than in wrought material. In all arc welding processes, the intense heat source produced by the arc and the associated local heating and cooling result in a number of consequences in the material's corrosion behaviour, and several metallurgical phase changes occur in different zones of weldments. Corrosion damages to welds occur in spite of the fact that the proper base metal and filler metal have been correctly selected, industry codes and standards have been followed, and welds have been formed with full weld penetration and have the proper shape and contour. The present study is an attempt to evaluate the behaviour of dissimilar weldments of AISI 304 (austenitic stainless steel) and IS2062 (mild steel) joined by TIG welding with and without buttering. To evaluate the corrosion susceptibility, a corrosion test is performed on the samples that are placed in the aerated 3.5% NaCl solution at room temperature. Compare the corrosion performance, tensile strength, and hardness of the samples with and without buttering dissimilar weldments and evaluate their suitability for use in industrial applications. |
URI: | http://localhost:8081/jspui/handle/123456789/18369 |
Research Supervisor/ Guide: | Arora, Navneet |
metadata.dc.type: | Dissertations |
Appears in Collections: | MASTERS' THESES (MIED) |
Files in This Item:
File | Description | Size | Format | |
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21564003_RAJNISH KUMAR SINGH.pdf | 3.19 MB | Adobe PDF | View/Open |
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