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Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays

Duplex stainless steel (DSS) has a reasonably high resistance to chloride stress corrosion cracking for offshore and marine applications. However, DSS weld overlay has not been successfully demonstrated due to some inherent problems in achieving pitting and crevice corrosion resistance. In this rese...

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Main Authors: Sim, Bernard Maxmillan, Tang, Sai Hong, Alrifaey, Moath, Jong, Edwin Nyon Tchan
Format: Article
Published: Multidisciplinary Digital Publishing Institute 2021
Online Access:http://psasir.upm.edu.my/id/eprint/95806/
https://www.mdpi.com/1996-1944/15/5/1833
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spelling my.upm.eprints.958062023-04-03T04:22:57Z http://psasir.upm.edu.my/id/eprint/95806/ Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays Sim, Bernard Maxmillan Tang, Sai Hong Alrifaey, Moath Jong, Edwin Nyon Tchan Duplex stainless steel (DSS) has a reasonably high resistance to chloride stress corrosion cracking for offshore and marine applications. However, DSS weld overlay has not been successfully demonstrated due to some inherent problems in achieving pitting and crevice corrosion resistance. In this research work, isothermal heat treatments (350, 650 and 1050 °C) with and different cooling rates have been performed DMR249 Grade A by using shield metal arc welding (SMAW) with an E2209 electrode. Micrographs have shown two phase microstructures of the DSS weld metal, the amounts of austenite phase increased with increment of post-weld heat treatment (PWHT) temperatures. The dilution has maintained consistent values except solution annealing that has shown the disappearance of the heat affected zone in micrographs. The weld metal hardness values increased with PWHT temperatures and remained low at solid solution annealing temperatures. The major alloying elements (C, Mo, Cr, Ni, N, and Fe) were analyzed, as these elements can contribute to intermetallic phases. The results showed that C and Cr content slightly increased with PWHT except for solid solution annealing, Mo showed consistently low content due to dilution effects. Ni maintained higher content, although the heat-treated samples showed slight fluctuations. Nitrogen produced consistent values, as recommended to prevent critical involvement in nitride precipitation. Multidisciplinary Digital Publishing Institute 2021 Article PeerReviewed Sim, Bernard Maxmillan and Tang, Sai Hong and Alrifaey, Moath and Jong, Edwin Nyon Tchan (2021) Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays. Materials, 15 (5). art. no. 1833. pp. 1-13. ISSN 1996-1944 https://www.mdpi.com/1996-1944/15/5/1833 10.3390/ma15051833
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Duplex stainless steel (DSS) has a reasonably high resistance to chloride stress corrosion cracking for offshore and marine applications. However, DSS weld overlay has not been successfully demonstrated due to some inherent problems in achieving pitting and crevice corrosion resistance. In this research work, isothermal heat treatments (350, 650 and 1050 °C) with and different cooling rates have been performed DMR249 Grade A by using shield metal arc welding (SMAW) with an E2209 electrode. Micrographs have shown two phase microstructures of the DSS weld metal, the amounts of austenite phase increased with increment of post-weld heat treatment (PWHT) temperatures. The dilution has maintained consistent values except solution annealing that has shown the disappearance of the heat affected zone in micrographs. The weld metal hardness values increased with PWHT temperatures and remained low at solid solution annealing temperatures. The major alloying elements (C, Mo, Cr, Ni, N, and Fe) were analyzed, as these elements can contribute to intermetallic phases. The results showed that C and Cr content slightly increased with PWHT except for solid solution annealing, Mo showed consistently low content due to dilution effects. Ni maintained higher content, although the heat-treated samples showed slight fluctuations. Nitrogen produced consistent values, as recommended to prevent critical involvement in nitride precipitation.
format Article
author Sim, Bernard Maxmillan
Tang, Sai Hong
Alrifaey, Moath
Jong, Edwin Nyon Tchan
spellingShingle Sim, Bernard Maxmillan
Tang, Sai Hong
Alrifaey, Moath
Jong, Edwin Nyon Tchan
Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
author_facet Sim, Bernard Maxmillan
Tang, Sai Hong
Alrifaey, Moath
Jong, Edwin Nyon Tchan
author_sort Sim, Bernard Maxmillan
title Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
title_short Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
title_full Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
title_fullStr Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
title_full_unstemmed Analyzing the effects of heat treatment on SMAW duplex stainless steel weld overlays
title_sort analyzing the effects of heat treatment on smaw duplex stainless steel weld overlays
publisher Multidisciplinary Digital Publishing Institute
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/95806/
https://www.mdpi.com/1996-1944/15/5/1833
_version_ 1762394229323071488
score 13.211869

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