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  1. 原著論文

Experimental Assessment of Temperature Distribution in Heat Affected Zone (HAZ) in Dissimilar Joint between 8Cr-2W Steel and SUS316L Fabricated by 4 kW Fiber Laser Welding

https://repo.qst.go.jp/records/48299
https://repo.qst.go.jp/records/48299
abce7eaf-2d71-4c4a-a98b-33969b9c9c41
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-08-08
タイトル
タイトル Experimental Assessment of Temperature Distribution in Heat Affected Zone (HAZ) in Dissimilar Joint between 8Cr-2W Steel and SUS316L Fabricated by 4 kW Fiber Laser Welding
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 Kano, S.

× Kano, S.

WEKO 485378

Kano, S.

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Oba, A.

× Oba, A.

WEKO 485379

Oba, A.

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Yang, H.L.

× Yang, H.L.

WEKO 485380

Yang, H.L.

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Matsukawa, Y.

× Matsukawa, Y.

WEKO 485381

Matsukawa, Y.

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Satoh, Y.

× Satoh, Y.

WEKO 485382

Satoh, Y.

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Serizawa, H.

× Serizawa, H.

WEKO 485383

Serizawa, H.

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Sakasegawa, H.

× Sakasegawa, H.

WEKO 485384

Sakasegawa, H.

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谷川, 博康

× 谷川, 博康

WEKO 485385

谷川, 博康

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酒瀬川 英雄

× 酒瀬川 英雄

WEKO 485386

en 酒瀬川 英雄

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谷川 博康

× 谷川 博康

WEKO 485387

en 谷川 博康

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抄録
内容記述タイプ Abstract
内容記述 High-Cr steel (Fe-8Cr-2W-0.4Mn-0.2V-0.06Ta, so-called F82H steel) is one of the candidate structure materials for fusion blanket system, and its dissimilar welding technology to stainless steel (SUS316L) is an inevitable issue. Fiber laser welding is a promising technique to joint F82H and SUS materials, because of its non-mandatory vacuum environment during welding, and the reduced distortion and residual stress. Purpose of the present study is to identify the microstructure characteristics of dissimilar joint between F82H and SUS316L fabricated by fiber laser welding. M23C6-type precipitates were evaluated using an electron back-scatter diffraction device equipped with a scanning electron microscope, an electron probe micro analyzer, and a transmission electron microscope. The microstructure of as-welded specimens was composed of heat affected zone (coarse grain (CGHAZ) and fine grain (FGHAZ)) in F82H side, and weld metal (WM). Distributions of size, density and chemical composition of precipitates in HAZ were examined as a function of the distance from WM/HAZ interface. Besides, isochronal annealing experiments on F82H performed to obtain relationship between annealing temperature and Cr (or C) concentration in M23C6 precipitates. Cr-rich M23C6 comparing with original F82H (tempered F82H) one was observed at temperature ranging from 1103 to 1173 K. By comparison of their microstructure with that of HAZ, temperature distribution in HAZ upon welding was evaluated. It is suggested that the HAZ/F82H interface and the FGHAZ/CGHAZ boundary were heated up to 1150 K and 1400 K, respectively. Further applications of this method to clarify the temperature history and its distribution in HAZ, as well as increase in diagnostic accuracy, are greatly expected.
書誌情報 Mechanical Engineering Letters

巻 2, p. 15-00481, 発行日 2016-05
DOI
識別子タイプ DOI
関連識別子 10.1299/mel.15-00481
関連サイト
識別子タイプ URI
関連識別子 https://www.jstage.jst.go.jp/article/mel/2/0/2_15-00481/_article
関連名称 https://www.jstage.jst.go.jp/article/mel/2/0/2_15-00481/_article
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