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Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds
Suresh Krishnamoorthy Seshadri
Published in Elsevier BV
2003
Volume: 358
   
Issue: 1-2
Pages: 9 - 16
Abstract
The excellent combination of strength and corrosion resistance in duplex stainless steels (DSS) is due to their strict composition control and microstructural balance. The ferrite-austenite ratio is often upset in DSS weld metals owing to the rapid cooling rates associated with welding. To achieve the desired ferrite-austenite balance and hence properties, either the weld metal composition and/or the heat input is controlled. In the current work, a low heat input process viz., EBW and another commonly employed process, gas tungsten-arc welding have been employed for welding of DSS with and without nickel enhancement. Results show that (i) chemical composition has got a greater influence on the ferrite-austenite ratio than the cooling rate, (ii) and even EBW which is considered an immature process in welding of DSS, can be employed provided means of filler addition could be devised. © 2003 Elsevier Science B.V. All rights reserved.
About the journal
JournalData powered by TypesetMaterials Science and Engineering A
PublisherData powered by TypesetElsevier BV
ISSN09215093
Open AccessNo
Concepts (13)
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    Composition
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    Corrosion resistance
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    Fillers
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    Microstructure
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    Nickel
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    Stainless steel
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    Composition control
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    Welds
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    Corrosion
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    Industrial application
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    Mechanical property
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    Structural analysis
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    Welding