Effect of welding thermal cycles on the oxidation resistance of 9 wt.% Cr heat resistant steels in 550 °C lead-bismuth eutectic

Jian Wang; Lijian Rong; Dianzhong Li; Shanping Lu

doi:10.1016/j.apsusc.2016.08.042

Effect of welding thermal cycles on the oxidation resistance of 9 wt.% Cr heat resistant steels in 550 °C lead-bismuth eutectic

Jian Wang, Lijian Rong, Dianzhong Li, Shanping Lu

CAS - Institute of Metal Research

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The oxidation resistance for the heat affected zone (HAZ) and base metal of 9 wt.% Cr heat resistant steel in 550 °C lead-bismuth eutectic has been investigated. The oxide film presents a three-layer structure. The outer layer is Fe ₃ O ₄ while the inner layer is mainly FeCr ₂ O ₄ . The oxide film thickness becomes thinner and thinner in turns of the coarse grained HAZ, fine grained HAZ, inter-critical HAZ and base metal. The oxygen diffusion is the rate determining step during the oxidation process. The Cr-enriched M ₂₃ C ₆ plays a significant role on the oxidation rate at the initial stage of oxidation. Increasing the carbon content is a useful method to improve the oxidation resistance.

Original language	English
Pages (from-to)	930-941
Number of pages	12
Journal	Applied Surface Science
Volume	389
DOIs	https://doi.org/10.1016/j.apsusc.2016.08.042
State	Published - 15 Dec 2016
Externally published	Yes

Keywords

9 wt.% Cr heat resistant steels
Lead-bismuth eutectic
Oxidation
Welding thermal cycle

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10.1016/j.apsusc.2016.08.042

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title = "Effect of welding thermal cycles on the oxidation resistance of 9 wt.% Cr heat resistant steels in 550 °C lead-bismuth eutectic",

abstract = " The oxidation resistance for the heat affected zone (HAZ) and base metal of 9 wt.% Cr heat resistant steel in 550 °C lead-bismuth eutectic has been investigated. The oxide film presents a three-layer structure. The outer layer is Fe 3 O 4 while the inner layer is mainly FeCr 2 O 4 . The oxide film thickness becomes thinner and thinner in turns of the coarse grained HAZ, fine grained HAZ, inter-critical HAZ and base metal. The oxygen diffusion is the rate determining step during the oxidation process. The Cr-enriched M 23 C 6 plays a significant role on the oxidation rate at the initial stage of oxidation. Increasing the carbon content is a useful method to improve the oxidation resistance.",

keywords = "9 wt.% Cr heat resistant steels, Lead-bismuth eutectic, Oxidation, Welding thermal cycle",

author = "Jian Wang and Lijian Rong and Dianzhong Li and Shanping Lu",

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doi = "10.1016/j.apsusc.2016.08.042",

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TY - JOUR

T1 - Effect of welding thermal cycles on the oxidation resistance of 9 wt.% Cr heat resistant steels in 550 °C lead-bismuth eutectic

AU - Wang, Jian

AU - Rong, Lijian

AU - Li, Dianzhong

AU - Lu, Shanping

PY - 2016/12/15

Y1 - 2016/12/15

N2 - The oxidation resistance for the heat affected zone (HAZ) and base metal of 9 wt.% Cr heat resistant steel in 550 °C lead-bismuth eutectic has been investigated. The oxide film presents a three-layer structure. The outer layer is Fe 3 O 4 while the inner layer is mainly FeCr 2 O 4 . The oxide film thickness becomes thinner and thinner in turns of the coarse grained HAZ, fine grained HAZ, inter-critical HAZ and base metal. The oxygen diffusion is the rate determining step during the oxidation process. The Cr-enriched M 23 C 6 plays a significant role on the oxidation rate at the initial stage of oxidation. Increasing the carbon content is a useful method to improve the oxidation resistance.

AB - The oxidation resistance for the heat affected zone (HAZ) and base metal of 9 wt.% Cr heat resistant steel in 550 °C lead-bismuth eutectic has been investigated. The oxide film presents a three-layer structure. The outer layer is Fe 3 O 4 while the inner layer is mainly FeCr 2 O 4 . The oxide film thickness becomes thinner and thinner in turns of the coarse grained HAZ, fine grained HAZ, inter-critical HAZ and base metal. The oxygen diffusion is the rate determining step during the oxidation process. The Cr-enriched M 23 C 6 plays a significant role on the oxidation rate at the initial stage of oxidation. Increasing the carbon content is a useful method to improve the oxidation resistance.

KW - 9 wt.% Cr heat resistant steels

KW - Lead-bismuth eutectic

KW - Oxidation

KW - Welding thermal cycle

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U2 - 10.1016/j.apsusc.2016.08.042

DO - 10.1016/j.apsusc.2016.08.042

M3 - 文章

AN - SCOPUS:84981507376

SN - 0169-4332

VL - 389

SP - 930

EP - 941

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Effect of welding thermal cycles on the oxidation resistance of 9 wt.% Cr heat resistant steels in 550 °C lead-bismuth eutectic

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Keywords

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