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Effect of Heating Rate on Grain Refinement in Weld Metal of Type 430 Stainless Steel
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- YAMASHITA Shotaro
- Hiroshima University
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- SHINOZAKI Kenji
- Hiroshima University
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- YAMAMOTO Motomichi
- Hiroshima University
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- KADOI Kota
- Hiroshima University
Bibliographic Information
- Other Title
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- フェライト系ステンレス鋼SUS430溶接金属の微細粒組織形成
- -ホットワイヤTIG溶接法による溶接金属組織の微細化技術の開発-
- - Grain Refinement in Weld Metal by Hot-wire GTAW Process -
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Description
The aim of this study was to investigate the influence of power supply distance on the grain refining in weld metal of type 430 stainless steel. The fine grain formed conjunction with filler wire according to microstructure obtained by water quenching method. From the result, local melting occurred in filler wire before fine grain. The fine grains formed at the lower part of the weld metal when the wire current was low. On the other hands, the fine grain formed at the upper part when the wire current was high. The amount of the fine grain increased with increasing the wire current. Moreover, the area ratio of fine grain in weld metal increased with decreasing the power supply distance and the size of fine grain formed with each power supply distance in weld metal increased with increasing the power supply distance.<br> The effect of power supply distance on microstructure evolution in filler wire was investigated to obtain during heating of wire. Recrystallization and grain growth was observed in the heated wire. The grain size decreased with decreasing the power supply distance, because heating rate of wire increased with decreasing the power supply distance.
Journal
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- QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY
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QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 35 (1), 51-56, 2017
JAPAN WELDING SOCIETY
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Details 詳細情報について
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- CRID
- 1390001204726490624
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- NII Article ID
- 130005465237
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- ISSN
- 24348252
- 02884771
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed