2 0 0 0 OA 海洋情報都市

著者
寺井 精英
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.57, no.1, pp.8-28, 1988-01-05 (Released:2011-08-05)
被引用文献数
1
著者
小溝 裕一
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.59, no.7, pp.498-501, 1990-10-05 (Released:2011-08-05)
参考文献数
17
被引用文献数
2 1
著者
堀野 正也 渡辺 啓司 玉橋 邦裕
出版者
一般社団法人 溶接学会
雑誌
溶接学会論文集 (ISSN:02884771)
巻号頁・発行日
vol.15, no.1, pp.38-44, 1997-02-05 (Released:2009-12-10)
参考文献数
14

Au-Sn solder has relatively high reliability because of the higher corrosion resistance and high temperature strength compared with Pb-Sn solder. It is, however, difficult to form Au-Sn alloy solder layer in the wet plating process on bonding surfaces. In this study, Au-Sn solder is provided as laminated Au-Sn-Au plating formed in a wet process on thin metal plates. Ni plating is formed prior to laminated Au-Sn-Au plating in order to improve wettability of the solder. Soldering process for thin metal plates without flux is investigated at the view point of soldering conditions and outgassing from the solder. Experimental result shows that Au plating contains larger amount of gas compared with Ni or Sn plating and the gas causes the solder layer to form voids. Forming many small holes around the specimen surface, amount of voids can be reduced. Peeling test shows that the peel strength of bonded specimen is influenced by the residual Ni thickness on the bonding interface rather than the bonding time or bonding pressure.
著者
川上 博士 鈴木 実平 藤原 正典 中嶋 純也
出版者
一般社団法人 溶接学会
雑誌
溶接学会論文集 (ISSN:02884771)
巻号頁・発行日
vol.25, no.1, pp.24-30, 2007 (Released:2006-12-25)
参考文献数
17
被引用文献数
2

The possibility and the mechanical properties of Al/Cu dissimilar bonding with liquefaction by the reaction diffusion in air were investigated at the temperature range between the melting point of aluminum and the eutectic temperature of Al-Cu system equilibrium diagram. The surface of each specimen was prepared by a simple preprocessing with the polishing and the cleaning by acetone. The Al/Cu dissimilar joint could be obtained by this bonding process in air. The bonding pressure is an important factor for this bonding process. The increment of bonding temperature and the decrement of oxygen concentration of air also promote solid state diffusion at Al/Cu interface. All bonded specimens in this study were fractured by the brittle fracture mode like cleavage fracture. The phases observed mainly in fracture surface is θ phase. The tensile strength of specimen bonded in air is similar with that of specimen by the diffusion bonding in vacuum.
著者
菅 泰雄
出版者
一般社団法人 溶接学会
雑誌
溶接学会論文集 (ISSN:02884771)
巻号頁・発行日
vol.2, no.4, pp.676-681, 1984-11-05 (Released:2009-12-10)
参考文献数
11

The effect of diffusible hydrogen on mechanical properties of underwater wet welded joints by gravity welding process is investigated. The 4 and 6 mm dia. coated electrodes of five types and SM41 steel base metals of 6 and 9 mm in thickness are used.Main results obtained are summarized as follows;(1) The volume of diffusible hydrogen in underwater weld is much more than that in air weld. HD of underwater weld.increases with increasing of weld heat input and welding current and with an decreasing of thickness of base metal. However, HW shows roughly a constant value regardless of welding current and thickness of base metal.(2) The mechanical properties of the underwater weld, that is, tensile strength, elongation, bending ductility and notch toughness, can be improved remarkably by post weld heat treatment.(3) The evolution process of hydrogen from bead and butt weld and the recovery process of the mechanical properties of welds are able to be analysed by using the one-dimensional weld model. Consequently it becomes clear that the time factor r=Dt/l02, by which the great part of diffusible hydrogen diffuses out of weld, should be selected as the condition of post weld heat treatment.
著者
鷹野 一朗 中村 勲 沢田 芳夫
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.71, no.4, pp.214-218, 2002-06-05 (Released:2011-08-05)
参考文献数
17
被引用文献数
2 3
著者
谷 明紀
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.81, no.4, pp.251-256, 2012 (Released:2015-02-05)
参考文献数
5
著者
木村 博
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.34, no.11, pp.1140-1163, 1965-11-25 (Released:2011-08-05)
参考文献数
30
被引用文献数
1 1
著者
木村 博
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.34, no.12, pp.1221-1242, 1965-12-25 (Released:2011-08-05)
参考文献数
29
被引用文献数
1 1
著者
大西 巌
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.40, no.6, pp.489-500, 1971-06-25 (Released:2011-08-05)
参考文献数
11
被引用文献数
1 1
著者
大沢 直樹 澤村 淳司 池上 祐一 山口 和恵
出版者
一般社団法人 溶接学会
雑誌
溶接学会論文集 (ISSN:02884771)
巻号頁・発行日
vol.31, no.2, pp.141-156, 2013 (Released:2013-07-23)
参考文献数
18
被引用文献数
2 2

Plate temperature and heat input in oxyfuel gas cutting process with H2/LP gas and LPG flame are calculated by 3-dimensional FE heat conduction analyses. FE analyses are performed by using moving coordinates, and cutting groove temperature is determined by iterative calculation. The 2-dimensional groove temperature distribution determined by Matsuyama's theory is chosen as the initial values in this iterative calculation. The heat transfer properties of the preheating flame are determined by using the GA-based heat transfer estimation technique proposed in the previous report. The validity of the proposed numerical procedure and the accuracy of the determined groove temperature are examined by comparing the calculated and measured plate temperature and HAZ sizes. Heat input due to preheating, qG, and that due to self burning of steel, qB, are estimated in these analyses, and they are compared with the heat inputs estimated by Wells' and modified Wells' equations. The relation between the heat transfer characteristics of the preheating gas flame and plate temperature distribution is examined, and the cutting performance improvement mechanisms of Hydrogen preheating are discussed. As results, followings are found: 1) The 3-dimensional groove temperature distribution can be calculated by performing the iterative analyses procedure proposed in this study; 2) The critical cutting speed can be estimated once the gas heat transfer parameters are known; 3) It is not appropriate to evaluate the magnitude of cutting thermal deformation only from the preheating gas's total calorific value; 4) Under the conditions chosen, the heat generated by self burning is inadequate to maintain the cutting process, and it is essential to supplement heat by preheating; 5) The faster cutting speed and smaller total heat input of H2/LP gas are results of the larger local heat transfer coefficient below the gas ejection hole. It is supposed that the improvement in oxyfuel gas cutting performance can be achieved by modifying the heating apparatus so that the local heat transfer coefficient becomes larger.
著者
黒田 敏雄 松田 福久
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.65, no.7, pp.568-575, 1996-10-05 (Released:2011-08-05)
参考文献数
37
被引用文献数
1 1
著者
小西 佳郎 藤井 英俊 中田 一博 野城 清
出版者
一般社団法人 溶接学会
雑誌
溶接学会全国大会講演概要 平成20年度春季全国大会
巻号頁・発行日
pp.28, 2008 (Released:2008-04-18)

大幅な接合速度の向上や荷重の低減を目的とし、炭素鋼に対して補助熱源にレーザーを用いた摩擦攪拌接合を行なった。得られた継手の微細組織や機械的性質に及ぼす入熱量の影響を調査した。
著者
奈良 圭祐
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.82, no.3, pp.177-180, 2013 (Released:2015-04-09)
参考文献数
5
被引用文献数
3 2
著者
佐々木 直彦(胤成)
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.84, no.7, pp.504-507, 2015 (Released:2016-02-02)
参考文献数
10
著者
佐藤 裕 德田 慎平
出版者
一般社団法人 溶接学会
雑誌
溶接学会全国大会講演概要 2019年度秋季全国大会
巻号頁・発行日
pp.86-87, 2019 (Released:2019-12-19)
参考文献数
4

FSWで得られたAl/Fe接合界面における異種金属接触型腐食を解析した.Alのみ,Feのみ,Al/Fe接合界面を用意し,0.1M NaCl溶液中で自然浸漬試験を行ったところ,Al/Fe接合界面での腐食が最も顕著だった.また,マイクロ電気化学システムを用いて,Al/Fe接合界面での腐食発生挙動のその場観察を行った結果,Alでは浸漬直後から孔食が発生し,Fe上では腐食生成物の沈殿が観察された.
著者
中西 保正
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.57, no.1, pp.29-34, 1988-01-05 (Released:2011-08-05)
参考文献数
13
被引用文献数
1 2
著者
荒谷 雄
出版者
一般社団法人 溶接学会
雑誌
溶接学会誌 (ISSN:00214787)
巻号頁・発行日
vol.41, no.9, pp.1055-1063, 1972 (Released:2011-08-05)
参考文献数
19
被引用文献数
4 4