The Effect of Friction Stir Processing Speed Ratio on the Microstructure and Mechanical Properties of A 430 Ferritic Stainless Steel

Authors

  • Ali Salemi Golezani Department of Materials Engineering, Islamic Azad University - Karaj Branch, Karaj, Iran
  • Firooz Kargar Department of Materials Engineering, Tarbiat Modares University, Tehran, Iran
  • S. M Arab Department of Materials Engineering, Islamic Azad University - Karaj Branch, Karaj, Iran
  • Sh. Javadi Department of Materials Engineering, Islamic Azad University - Karaj Branch, Karaj, Iran
Abstract:

This study is an attempt to investigate the effect of welding rotational and traverse speed on mechanical and microstructural properties of A 430 stainless steel in order to give an effective processing window to achieve an appropriate microstructure and so mechanical properties. There are a wide range industrial uses for ferritic stainless steel. There from they have some problems like grain coarsening and martensitic transformation during conventional fusion welding, solid state welding methods has found a great interest. A heavy duty NC machine is used for FSW. Water cooled brass chamber is used to prevent the tool from severe wear and damage. In order to study the effect of rotational to welding speed ratio ( ) on microstructure, rotational speeds of 600, 800 rpm and welding speeds of 50, 100, 150, 200 mm/min with a spindle tilt angle of 3° are selected. Results showed that ferrite grain size decreased by increasing welding speed at constant rotational speeds which prove dynamic recrystallization occurrence in the nugget zone. Mechanical tests showed that strength and hardness of weld zone in increased compared to base metal.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Effect of Thermomechanical Processing on the Microstructure and Mechanical Properties of a Duplex Stainless Steel

Duplex stainless steels (DSSS) have a microstructure composed of ferrite and austenite phases that gives them a very good combination of mechanical and corrosion properties. These steels are desirable for many applications in the chemical and petrochemical industries. In the present study, a type of stainless steel was cast, solution annealed at 1200°C for 60 min and then quenched in water. Ini...

full text

Evaluation of microstructure and mechanical properties of friction stir welded copper / 316L stainless steel dissimilar metals

In the present research, friction stir welding (FSW) process was used for butt joining of pure copper plate to 316L stainless steel plate. Mechanical properties and microstructural characteristics of the joint were evaluated by microhardness and tensile tests as well as optical and scanning electron microscope (SEM). It was found that microstructure of the weld nugget (WN) has fine grains where...

full text

Effects of Friction Stir Processing on the Microstructure and Mechanical Properties of Fusion Welded 304L Stainless Steel

A variation of FSW, friction stir processing (FSP), has been used to modify selected regions of materials to enhance specific properties while eliminating fusion welding defects such as porosity, cracking, and the cast microstructure. The combination of fusion welding defects and high tensile residual stresses caused by the solidification of the molten weld pool adversely affect the post weld s...

full text

The Influence of Homogenization and Solution Annealing Process on the Microstructure and Mechanical Properties of 1.4470 Ferritic-austenitic Stainless Steel

In the present research, the effect of the homogenization process and annealing temperature were investigated for the 1.4470 ferritic-austenitic stainless steel in the as-cast condition. In this regard, microstructural evolutions, hardness, and impact energy of the steel was evaluated with different heat treatment conditions. The results show that the minimum volume fraction of austenite phase ...

full text

Microstructure, Mechanical and Corrosion Properties of Friction Stir Welding High Nitrogen Martensitic Stainless Steel 30Cr15Mo1N

High nitrogen martensitic stainless steel 30Cr15Mo1N plates were successfully welded by friction stir welding (FSW) at a tool rotation speed of 300 rpm with a welding speed of 100 mm/min, using W-Re tool. The sound joint with no significant nitrogen loss was successfully produced. Microstructure, mechanical and corrosion properties of an FSW joint were investigated. The results suggest that the...

full text

Influence of rotational speed on the development of microstructure in a friction stir welded 304 austenitic stainless steel

Friction stir welding was conducted on AISI 304 austenitic stainless steel sheet with dimensions of 100 mm × 100 mm × 2 mm. The FSW was performed at a welding speed of 150 mm/min and rotational speeds of 400 and 800 rpm. The results showed that high frequency of low angle grain boundaries (LAGBs) were formed through dynamic recovery in the thermo-mechanically affected zone (TMAZ). Higher amoun...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 2  issue 2

pages  39- 48

publication date 2014-05-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023