Effect of reheating on low temperature toughness of type 308L austenitic stainless steel weld metal - low temperature toughness of austenitic stainless steel weld metal (report 5)

Tadao Onzawa, Akito Takasaki, Masaru Sekiguchi

Research output: Contribution to journalArticle

Abstract

In this study, the heat-treating was done from 923 to 1523K for 2s to 24h. In heat-treating the weld metal with δ ferrite above 2%, the absorbed energy decreased with increasing amount of prior δ ferrite. In the case of treatment at 923K, degradation of absorbed energy was observed. On the other hand, the absorbed energy of fully austenitic weld metal was constant independent of heat-treating time and temperature. In the type 316L weld metal reported previously, the absorbed energy tended to rise slightly by heat-treatment for up to 120s. In Type 308L weld metal, such a tendency was not observed. This is attributed to good coherency of the δ/γ interface compared to Type 316L eutectic δ ferrite weld metal. The decomposition of δ ferrite was slower than that in Type 316L.

Original languageEnglish
Pages (from-to)76-81
Number of pages6
JournalYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
Volume6
Issue number2
Publication statusPublished - 1988 May
Externally publishedYes

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Austenitic stainless steel
Toughness
Welds
Metals
Ferrite
Temperature
Eutectics
Heat treatment
Decomposition
Degradation
Hot Temperature

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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title = "Effect of reheating on low temperature toughness of type 308L austenitic stainless steel weld metal - low temperature toughness of austenitic stainless steel weld metal (report 5)",
abstract = "In this study, the heat-treating was done from 923 to 1523K for 2s to 24h. In heat-treating the weld metal with δ ferrite above 2{\%}, the absorbed energy decreased with increasing amount of prior δ ferrite. In the case of treatment at 923K, degradation of absorbed energy was observed. On the other hand, the absorbed energy of fully austenitic weld metal was constant independent of heat-treating time and temperature. In the type 316L weld metal reported previously, the absorbed energy tended to rise slightly by heat-treatment for up to 120s. In Type 308L weld metal, such a tendency was not observed. This is attributed to good coherency of the δ/γ interface compared to Type 316L eutectic δ ferrite weld metal. The decomposition of δ ferrite was slower than that in Type 316L.",
author = "Tadao Onzawa and Akito Takasaki and Masaru Sekiguchi",
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T1 - Effect of reheating on low temperature toughness of type 308L austenitic stainless steel weld metal - low temperature toughness of austenitic stainless steel weld metal (report 5)

AU - Onzawa, Tadao

AU - Takasaki, Akito

AU - Sekiguchi, Masaru

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N2 - In this study, the heat-treating was done from 923 to 1523K for 2s to 24h. In heat-treating the weld metal with δ ferrite above 2%, the absorbed energy decreased with increasing amount of prior δ ferrite. In the case of treatment at 923K, degradation of absorbed energy was observed. On the other hand, the absorbed energy of fully austenitic weld metal was constant independent of heat-treating time and temperature. In the type 316L weld metal reported previously, the absorbed energy tended to rise slightly by heat-treatment for up to 120s. In Type 308L weld metal, such a tendency was not observed. This is attributed to good coherency of the δ/γ interface compared to Type 316L eutectic δ ferrite weld metal. The decomposition of δ ferrite was slower than that in Type 316L.

AB - In this study, the heat-treating was done from 923 to 1523K for 2s to 24h. In heat-treating the weld metal with δ ferrite above 2%, the absorbed energy decreased with increasing amount of prior δ ferrite. In the case of treatment at 923K, degradation of absorbed energy was observed. On the other hand, the absorbed energy of fully austenitic weld metal was constant independent of heat-treating time and temperature. In the type 316L weld metal reported previously, the absorbed energy tended to rise slightly by heat-treatment for up to 120s. In Type 308L weld metal, such a tendency was not observed. This is attributed to good coherency of the δ/γ interface compared to Type 316L eutectic δ ferrite weld metal. The decomposition of δ ferrite was slower than that in Type 316L.

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