Refurbishing damaged surfaces of nickel-aluminum bronze propellers: A robotic approach using gas metal arc welding and friction stir processing

2021 ◽  
Author(s):  
Azman Ahmad
Keyword(s):  
Friction Stir Processing ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Aluminum Bronze ◽  
Nickel Aluminum ◽  
Robotic Approach ◽  
Friction Stir ◽  
Metal Arc Welding ◽  
Nickel Aluminum Bronze

Microstructure and Microtexture Development during Friction Stir Processing of Nickel Aluminum Bronze

2012 ◽  
Vol 18 (S2) ◽  
pp. 1662-1663
Author(s):  
T. McNelley ◽  
S. Menon
Keyword(s):  
Friction Stir Processing ◽  
Aluminum Bronze ◽  
Nickel Aluminum ◽  
Friction Stir ◽  
Nickel Aluminum Bronze ◽  
Microstructure And Microtexture

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Improving GMAW weld metal and HAZ properties through friction stir processing

2020 ◽  
Vol 65 (3) ◽  
pp. 137-142
Author(s):  
Gupta Kumar ◽  
Raja Ravi ◽  
Adarsh Kumar ◽  
Meghanshu Vashista ◽  
Khan Zaheer
Keyword(s):  
Weld Metal ◽  
Friction Stir Processing ◽  
Heat Affected Zone ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Milling Process ◽  
Friction Stir ◽  
Metal Arc Welding ◽  
Tungsten Carbide Tool ◽  
Standard Techniques

Steel is one of the most widely used engineering materials and it is popularly welded in fabrication industries using Gas metal arc welding (GMAW) process. The microstructure obtained in the heat affected zone is often characterized with large grain size. Depending on the GMAW process parameters, the weld metal may consist of Allotrimorphic ferrite if the heat input is high. Therefore, the weld metal and the heat affected zone may have poor weld metal toughness. Efforts have been made to modify the microstructure of the weld metal by performing friction stir processing. Initially bead on plate welding was performed on mild steel plate using GMAW process using standard 1.2 mm consumable wire and CO2 as the shielding gas. The top surface of the weld was processed using a tungsten carbide tool. The weld reinforcement was removed using milling process and the area to be processed was made smooth before performing FSP. The plate was secured in an FSW machine and friction stir processing was carried out with a FSW tool having pin length of 2 mm. The GMAW weld and the weld that has been subsequently modified using FSP were characterized using standard techniques. The microstructure of the top face showed an improvement from Widmanstätten to fine equiaxed structure after being friction stir processed. The microstructure in the HAZ also got refined. It is expected that this structure would improve the mechanical properties of the weld particularly on the surface.

A study on sustainability assessment of welding processes

2019 ◽  
Vol 234 (3) ◽  
pp. 501-512 ◽  
Author(s):  
Jaber Jamal ◽  
Basil Darras ◽  
Hossam Kishawy
Keyword(s):  
Arc Welding ◽  
Social Impact ◽  
Sustainability Assessment ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Friction Stir ◽  
Gas Tungsten Arc ◽  
Metal Arc Welding ◽  
Sustainability Assessments ◽  
Welding Processes

The concept of “sustainability” has recently risen to take the old concept of going “green” further. This article presents general methodologies for sustainability assessments. These were then adapted to measure and assess the sustainability of welding processes through building a complete framework, to determine the best welding process for a particular application. To apply this methodology, data about the welding processes would be collected and segregated into four categories: environmental impact, economic impact, social impact, and physical performance. The performance of each category would then be aggregated into a single sustainability score. To demonstrate the capability of this methodology, case studies of three different welding processes were performed. Friction stir welding obtained the highest overall sustainability score compared to gas tungsten arc welding and gas metal arc welding.

Sign in / Sign up

Export Citation Format

Share Document