Performance enhancement of Co-based alloy tool for friction stir welding of ferritic steel

Yutaka S. Sato; Masahiro Miyake; Shinichi Susukida; Hiroyuki Kokawa; Toshihiro Omori; Kiyohito Ishida; Shinya Imano; Seung Hwan C. Park; Itto Sugimoto; Satoshi Hirano

doi:10.1007/978-3-319-48173-9_4

Performance enhancement of Co-based alloy tool for friction stir welding of ferritic steel

Yutaka S. Sato, Masahiro Miyake, Shinichi Susukida, Hiroyuki Kokawa, Toshihiro Omori, Kiyohito Ishida, Shinya Imano, Seung Hwan C. Park, Itto Sugimoto, Satoshi Hirano

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

5 Citations (Scopus)

Abstract

Co-based alloy tools having the γ/γ' microstructure with distribution of hard phases hardly experience large deformation and severe wear during friction stir welding (FSW) of ferritic steels at the welding temperature lower than the γ'-solvus. Further examinations implied that the tool wear were suppressed more effectively on Co-based alloy tool with larger volume fraction of hard phases with average size of 2 to 5 µm. In this study, Co-based alloy tools with different volume fractions of hard phases were designed, and effect of hard phases on tool wear was examined in FSW of 0.45% carbon steel. FSW trial showed that the tool wear decreased with increasing volume fraction of hard phases. At the volume fraction of 36%, the wear volume was successfully reduced to two third of that of the tool exhibiting the good wear resistance in a previous study. This study showed a possibility that the tool performance is effectively enhanced by further microstructure optimization of the tool material.

Original language	English
Title of host publication	Friction Stir Welding and Processing VIII
Publisher	Springer International Publishing
Pages	39-46
Number of pages	8
ISBN (Electronic)	9783319481739
ISBN (Print)	9781119082491
DOIs	https://doi.org/10.1007/978-3-319-48173-9_4
Publication status	Published - 2016 Jan 1

Keywords

Co-based alloy
Ferritic steel
Friction stir welding
Welding tool

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10.1007/978-3-319-48173-9_4

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abstract = "Co-based alloy tools having the γ/γ' microstructure with distribution of hard phases hardly experience large deformation and severe wear during friction stir welding (FSW) of ferritic steels at the welding temperature lower than the γ'-solvus. Further examinations implied that the tool wear were suppressed more effectively on Co-based alloy tool with larger volume fraction of hard phases with average size of 2 to 5 µm. In this study, Co-based alloy tools with different volume fractions of hard phases were designed, and effect of hard phases on tool wear was examined in FSW of 0.45% carbon steel. FSW trial showed that the tool wear decreased with increasing volume fraction of hard phases. At the volume fraction of 36%, the wear volume was successfully reduced to two third of that of the tool exhibiting the good wear resistance in a previous study. This study showed a possibility that the tool performance is effectively enhanced by further microstructure optimization of the tool material.",

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author = "Sato, {Yutaka S.} and Masahiro Miyake and Shinichi Susukida and Hiroyuki Kokawa and Toshihiro Omori and Kiyohito Ishida and Shinya Imano and Park, {Seung Hwan C.} and Itto Sugimoto and Satoshi Hirano",

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doi = "10.1007/978-3-319-48173-9_4",

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AU - Sato, Yutaka S.

AU - Miyake, Masahiro

AU - Susukida, Shinichi

AU - Kokawa, Hiroyuki

AU - Omori, Toshihiro

AU - Ishida, Kiyohito

AU - Imano, Shinya

AU - Park, Seung Hwan C.

AU - Sugimoto, Itto

AU - Hirano, Satoshi

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Co-based alloy tools having the γ/γ' microstructure with distribution of hard phases hardly experience large deformation and severe wear during friction stir welding (FSW) of ferritic steels at the welding temperature lower than the γ'-solvus. Further examinations implied that the tool wear were suppressed more effectively on Co-based alloy tool with larger volume fraction of hard phases with average size of 2 to 5 µm. In this study, Co-based alloy tools with different volume fractions of hard phases were designed, and effect of hard phases on tool wear was examined in FSW of 0.45% carbon steel. FSW trial showed that the tool wear decreased with increasing volume fraction of hard phases. At the volume fraction of 36%, the wear volume was successfully reduced to two third of that of the tool exhibiting the good wear resistance in a previous study. This study showed a possibility that the tool performance is effectively enhanced by further microstructure optimization of the tool material.

AB - Co-based alloy tools having the γ/γ' microstructure with distribution of hard phases hardly experience large deformation and severe wear during friction stir welding (FSW) of ferritic steels at the welding temperature lower than the γ'-solvus. Further examinations implied that the tool wear were suppressed more effectively on Co-based alloy tool with larger volume fraction of hard phases with average size of 2 to 5 µm. In this study, Co-based alloy tools with different volume fractions of hard phases were designed, and effect of hard phases on tool wear was examined in FSW of 0.45% carbon steel. FSW trial showed that the tool wear decreased with increasing volume fraction of hard phases. At the volume fraction of 36%, the wear volume was successfully reduced to two third of that of the tool exhibiting the good wear resistance in a previous study. This study showed a possibility that the tool performance is effectively enhanced by further microstructure optimization of the tool material.

KW - Co-based alloy

KW - Ferritic steel

KW - Friction stir welding

KW - Welding tool

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BT - Friction Stir Welding and Processing VIII

PB - Springer International Publishing

ER -

Performance enhancement of Co-based alloy tool for friction stir welding of ferritic steel

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Keywords

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