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Paper Title
Effect of Aluminium on Mechanical Properties of low strength low alloy Welds
  Rakesh Sharma,  Vishnu Singh,  Manvendra Singh

The effect of filler metal composition on the microstructure and mechanical prop­ erties of four­wire tandem submerged arc welded API 5L­X65 steel was investigated. Microhardness, izod impact, and all­weld longitudinal round tensile tests were ap­ plied to evaluate the mechanical properties of the weld metals. The microstructure of specimens was studied by optical and scanning electron microscopes. The structural observations showed that the more acicular ferrite was formed in the microstructure, the better mechanical properties were achieved. The impact energy and strength values were higher for the specimen containing more amounts of tita­ nium and boron. The brittle­to­ductile transition temperature could be decreased by increasing the amount of acicular ferrite. For the microstructure with 80% acicular ferrite, the impact energy was about 70 J at –60°C. The addition of titanium dispersed fine oxide inclusions and facilitated the nucleation of acicular ferrite in the microstructure. The oxide particles with a size of 2 µm acted as the nucleation sites of acicular ferrite.

Keywords- Mechanical Properties, Filler Metal, Tandem Submerged Arc Welding (TSAW), Microstructure, API 5L­X65 Pipe
Publication Details
Unique Identification Number - IJEDR1904123
Page Number(s) - 745-753
Pubished in - Volume 7 | Issue 4 | December 2019
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  Rakesh Sharma,  Vishnu Singh,  Manvendra Singh,   "Effect of Aluminium on Mechanical Properties of low strength low alloy Welds", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 4, pp.745-753, December 2019, Available at :http://www.ijedr.org/papers/IJEDR1904123.pdf
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