Early stage oxidation behavior of Al- and Si-alloyed stainless steels as well as Ni-based alloys in air at elevated temperatures

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Early stage oxidation behavior of Al- and Si-alloyed stainless steels as well as Ni-based alloys in air at elevated temperatures. / Romu, Jyrki; Sarikka, Teemu; Heikkilä, Mikko; Virkkunen, Iikka; Hänninen, Hannu.

In: Materials and Corrosion, Vol. 69, No. 6, 01.06.2018, p. 690-702.

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@article{db73732501b744c186f6144fe641ceb7,
title = "Early stage oxidation behavior of Al- and Si-alloyed stainless steels as well as Ni-based alloys in air at elevated temperatures",
abstract = "Several alloys including Al-alloyed austenitic and ferritic stainless steels, Ni-based alloy and Si-alloyed ferritic stainless steel were annealed at 550, 750, and 950 °C for up to 700 h. AISI 347HFG and 10CrMo910 were used as reference materials. Weight gain was measured and the samples were analyzed with SEM/EDS and XRD. Materials having high enough Al-content performed best due to ability to form a continuous protective Al2O3-oxide layer on their surface at elevated temperatures. Lower Al-content materials were not able to form a continuous protective Al-oxide on their surface and suffered from accelerated internal Al-oxide formation due to alloying elements. Si-alloying improves the oxidation resistance of the studied materials and their performance was practically in the same level as that of the best Al-alloyed materials. In Al-alloyed materials the crystallinity of Al2O3 on ferritic stainless steel weld metal was higher than that on welded and wrought austenitic stainless steels.",
keywords = "Al-alloyed, crystal structure, Ni-base alloy, oxidation, Si-alloyed, stainless steel",
author = "Jyrki Romu and Teemu Sarikka and Mikko Heikkil{\"a} and Iikka Virkkunen and Hannu H{\"a}nninen",
year = "2018",
month = "6",
day = "1",
doi = "10.1002/maco.201709836",
language = "English",
volume = "69",
pages = "690--702",
journal = "MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION",
issn = "0947-5117",
number = "6",

}

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TY - JOUR

T1 - Early stage oxidation behavior of Al- and Si-alloyed stainless steels as well as Ni-based alloys in air at elevated temperatures

AU - Romu, Jyrki

AU - Sarikka, Teemu

AU - Heikkilä, Mikko

AU - Virkkunen, Iikka

AU - Hänninen, Hannu

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Several alloys including Al-alloyed austenitic and ferritic stainless steels, Ni-based alloy and Si-alloyed ferritic stainless steel were annealed at 550, 750, and 950 °C for up to 700 h. AISI 347HFG and 10CrMo910 were used as reference materials. Weight gain was measured and the samples were analyzed with SEM/EDS and XRD. Materials having high enough Al-content performed best due to ability to form a continuous protective Al2O3-oxide layer on their surface at elevated temperatures. Lower Al-content materials were not able to form a continuous protective Al-oxide on their surface and suffered from accelerated internal Al-oxide formation due to alloying elements. Si-alloying improves the oxidation resistance of the studied materials and their performance was practically in the same level as that of the best Al-alloyed materials. In Al-alloyed materials the crystallinity of Al2O3 on ferritic stainless steel weld metal was higher than that on welded and wrought austenitic stainless steels.

AB - Several alloys including Al-alloyed austenitic and ferritic stainless steels, Ni-based alloy and Si-alloyed ferritic stainless steel were annealed at 550, 750, and 950 °C for up to 700 h. AISI 347HFG and 10CrMo910 were used as reference materials. Weight gain was measured and the samples were analyzed with SEM/EDS and XRD. Materials having high enough Al-content performed best due to ability to form a continuous protective Al2O3-oxide layer on their surface at elevated temperatures. Lower Al-content materials were not able to form a continuous protective Al-oxide on their surface and suffered from accelerated internal Al-oxide formation due to alloying elements. Si-alloying improves the oxidation resistance of the studied materials and their performance was practically in the same level as that of the best Al-alloyed materials. In Al-alloyed materials the crystallinity of Al2O3 on ferritic stainless steel weld metal was higher than that on welded and wrought austenitic stainless steels.

KW - Al-alloyed

KW - crystal structure

KW - Ni-base alloy

KW - oxidation

KW - Si-alloyed

KW - stainless steel

UR - http://www.scopus.com/inward/record.url?scp=85048260864&partnerID=8YFLogxK

U2 - 10.1002/maco.201709836

DO - 10.1002/maco.201709836

M3 - Article

VL - 69

SP - 690

EP - 702

JO - MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION

JF - MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION

SN - 0947-5117

IS - 6

ER -

ID: 17082321