 Free Online Articles Directory |
|||||||
Home Page  Writing Publishing Phase Transformation and Mechanical Behavior in Annealed Duplex Stainless Steel Welds |
|||||||
 |
Phase Transformation and Mechanical Behavior in Annealed Duplex Stainless Steel Welds
The gas tungston arc welding (GTAW)is employed for welding of thin plates.In GTAW of standard 2205 duplex stainless steel ( DSS) plate of 5 mm thickness, which is having 22.37% Cr and 5.74% Ni is used in this study. Weld beads were produced with ER 2209 filler wire of higher alloy content (22% Cr and 9% Ni). The shielding gas Argon was employed in this work. The interpass temperatures were kept as 1100 C.
The phase transformations and mechanical behaviour during welding and subsequent.Annealing treatment of 2205 duplex stainless steel have been investigated. Detailed microstructural examination showed the presence of higher ferrite amounts in the heat affected zone (HAZ), while higher amounts of austenite were recorded in the centre region of the weld metal. Generaly Annealing treatments in the temperature range of 800–1000 °C resulted in a precipitation of ? phase and chromium carbides at the austenite and ferrite (?/?) interfaces that were found to be preferential precipitation sites.
To prevent this the process is carried out above 1050°C.Above 1050 °C, the volume fraction of ? ferrite increases with annealing temperature. The increase of ? ferrite occurs at a faster rate in the HAZ than in the base metal and fusion zone. Optimal mechanical properties and an acceptable ferrite/ austenite ratio throughout the weld regions corresponds to annealing at 1050 °C. The main aim of this work is to investigate the defect in the weldment by the use of x-ray (NDT). The macro and microstructure examinations, as well as the evaluations of the mechanical properties such as impact and hardness were carried out. And also the pitting corrosion resistan ces were evaluated. Results are discussed in detail.
Keywords: DSS, GTAW, weld defect, macro and microstructure, mechanical properties, pitting corrosion.
Rate this Article:
Current: 1 / 5 stars - 2 vote(s).
Article Tags: Stainless Steel, Steel, Duplex Stainless Steel, Mechanical Testing, Weld Metal, Heat Affected Zone, Base Metal, Phase Transformation Of Duplex Stainsteel Welds, Abstract Of Duplex Stainless Steel Welds, Gas Tungston Arc Welding, Annealing Treatments, Austenite  About the Author:i finished my engineering and trying to sort out the world to live on it.
Related ArticlesThe Truth About Cryogenic Processing for Improved Characteristics in Metals Sword Care and Maintenance Patio Furniture for Classy Homes Use Appropriate Materials for Furniture Items Blasting Away: Steel Building New Year, New Styles for Titanium-buzz Iron and Carbon Make Wonderful Things When Allied With An Alloy Tube Cuts Made Easy - a Cutting-edge Technology Got a Question? Ask.Ask the community a question about this article:Q&A Powered by:
 Latest Publishing ArticlesContent Creation - Got 10 Thumbs? You Can Still Create Information Products at the Speed of Sound Content Creation - Got 10 Thumbs? You Can Still Create Information Products at the Speed of Sound 6 Tips for the Aspiring Writer - the Road to Publishing Your Book To Have an Agent or not to Have an Agent: Do I Need a Literary Agent? Part 2 To Have an Agent or not to Have an Agent: Do I Need a Literary Agent? Part 1 Why Your Writing Isn't Working Is There a Demand for Print on Demand? Warnings From a Traditionally Published Author: Don’t be Bamboozled Into Self-publishing a Book |
|
|||||
|
Article Categories
|
|||||||
 Sign up for our email newsletterReceive updates, enter your email below
Use of this web site constitutes acceptance of the Terms Of Use and Privacy Policy | User published content is licensed under a Creative Commons License.
Copyright © 2005-2008 Free Articles by ArticlesBase.com, All rights reserved. (4.24, 17) |
|||||||
