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Trends in Machine design

A Review of the Effects of Filler Rod on Bimetallic Weld Joint

  1. lokesh .

Abstract

FSW (Friction Stir Welding) is a technology for joining solid-state metals. Welding metal does not melt and recast. Tunnel defects, kissing bonds, cracks, pin holes, and pipping defects are some of the most common in FSW. The defects occur as a result of poor metal mixing and insufficient heat input in the weld nugget zone. Only a small body of literature has focused on filler material and process parameters for producing a defect-free weld with optimal responses. Because of the differences in the properties of the base metal, there are several issues that must be addressed when welding bimetallic metals. The coefficient of warm extension, material organisation, and mechanical properties all have an impact on the weldability of the joint. For such joints, the buttering method is used to maintain this issue. It is extremely difficult to select a consumable cathode for buttering layers that will meet the requirements of appealing mechanical properties and synthetic organisation. One of the major issues for buttering layer affidavit is carbon relocation.

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