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Time-temperature-pr...
Time-temperature-precipitation and property diagrams for super duplex stainless steel weld metals
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- Hosseini, Vahid, 1987- (författare)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),Innovatum AB.,Trollhättan, Trollhättan, Sweden,PTW
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- Karlsson, Leif, 1956- (författare)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW
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- Engelberg, Dirk (författare)
- The University of Manchester, School of Materials,Manchester,UK
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- Wessman, Sten (författare)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),PTW
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(creator_code:org_t)
- 2018-01-17
- 2018
- Engelska.
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Ingår i: Welding in the World. - : Springer Science and Business Media LLC. - 0043-2288 .- 1878-6669. ; 62:3, s. 517-533
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Abstract
Ämnesord
Stäng
- Super duplex stainless steel (SDSS) weld metal microstructures, covering the complete temperature range from ambient to liquidus, were produced by arc heat treatment for 1 and 10 min. Temperature modeling and thermodynamic calculations complemented microstructural studies, hardness mapping and sensitization testing. After 1 min, intermetallics such as sigma and chi phase had precipitated, resulting in moderate sensitization at 720–840 °C. After 10 min, larger amounts of intermetallics resulted in hardness up to 400 HV0.5 and more severe sensitization at 580–920 °C. Coarse and fine secondary austenite precipitated at high and low temperatures, respectively: The finer secondary austenite was more detrimental to corrosion resistance due to its lower content of Cr, Mo, and N as predicted by thermodynamic calculations. Increased hardness and etching response suggest that 475 °C embrittlement had occurred after 10 min. Results are summarized as time-temperature-precipitation and property diagrams for hardness and sensitization.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- Super duplex stainless steel
- Weld metal
- Time-temperature-precipitation diagram
- Sensitization
- Hardness
- Sigma phase
- Stationary arc
- Heat treatment
- Secondary austenite
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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