Effect of welding processes on mechanical and microstructural properties of S275 structural steel joints

2018 ◽  
Vol 60 (9) ◽  
pp. 863-868
Author(s):  
Bekir Çevik
Keyword(s):  
Structural Steel ◽  
Microstructural Properties ◽  
Mechanical And Microstructural Properties ◽  
Steel Joints ◽  
Welding Processes

scholarly journals Effect of Feed Rate in FSW on the Mechanical and Microstructural Properties of AA5754 Joints

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Magdy M. El Rayes ◽  
Mahmoud S. Soliman ◽  
Adel T. Abbas ◽  
Danil Yu. Pimenov ◽  
Ivan N. Erdakov ◽  
...  
Keyword(s):  
Feed Rate ◽  
Subgrain Size ◽  
Welding Process ◽  
Fusion Welding ◽  
Strain Hardening Exponent ◽  
Microstructural Properties ◽  
Electron Backscattered Diffraction ◽  
Friction Stir ◽  
Mechanical And Microstructural Properties ◽  
Welding Processes

Friction stir welding is a solid-state welding process, which is successfully applied to aluminum alloys to replace fusion welding processes. In the present work, the influence of varying the feed rate at constant rotational speed on the mechanical and microstructural properties of friction stir welded AA5754 was investigated. FSW caused dynamic recrystallization leading to microstructural changes in different zones. Electron backscattered diffraction confirmed such changes via misorientation angle and subgrain size distributions. Energy dispersive spectroscopy determined the elements present in the matrix quantitatively and their distribution through mapping. Tensile and hardness tests showed slight enhancement compared to base metal. The strain hardening exponent was used to investigate the effect of varying the feed rate on the behavior of the welded samples.

Effect of welding parameters on mechanical and microstructural properties of GMAW and SMAW mild steel joints

2019 ◽  
Vol 47 (8) ◽  
pp. 844-851 ◽  
Author(s):  
Bijaya Kumar Khamari ◽  
Soumya Sobhan Dash ◽  
Swapan Kumar Karak ◽  
Bibhuti Bhusan Biswal
Keyword(s):  
Mild Steel ◽  
Welding Parameters ◽  
Microstructural Properties ◽  
Mechanical And Microstructural Properties ◽  
Steel Joints

Evaluating Micro-Structure, Hydration and Thermal Expansions of Cement Containing Nano-Silica

GIS Business ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 158-165 ◽  
Author(s):  
Dr. Sarvesh PS Rajput
Keyword(s):  
Portland Cement ◽  
Mechanical Characteristics ◽  
Microstructural Properties ◽  
Nano Silica ◽  
Micro Structure ◽  
Microstructural Characteristics ◽  
Mechanical And Microstructural Properties

This study reported that the addition of nano-silica enhances the mechanical characteristics of concrete as its compressive, flexural and tensile split strengths are increased. As a comparison mixture to equate it along with nano-modified concrete, ordinary samples of Portland cement (OPC) have been utilized. Herein, upto 6.0 percent of OPC has been substituted by nanosilica. In fact, the introduction of nanosilica improves mechanical and microstructural characteristics of concrete by significantly (28 to 35%). The finding therefore, indicated that partly replacing OPC with up to 5 percent nanosilica increases the mechanical and microstructural properties cured up to ninety days as opposed to the standard OPC mix.

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