巻号一覧
29 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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渡辺 久藤1979 年 29 巻 3 号 p. 81-82
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーPDF形式でダウンロード (322K) -
川勝 一郎, 津田 徹1979 年 29 巻 3 号 p. 83-88
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーEffects of ultrasonic on capillary penetration of a solder, effects of oxide film thickness on the base metal on solderability and a relation between the output power and the wet area on a single sheet were examined. Al-1200 sheets 0.5mm in thickness were soldered at 420°C using a 95%Zn-5%Al soldering alloy and a 20kHz ultrasonic soldering equipment. The ultrasonic soldering is applicable to a wider gap than the conventional soldering. When the sheets are soldered at a capillary gap, an upper part of soldered joint is incompletely joined showing apparent wetting. If the dipped sheet is single one, no apparent wetting is found. The thicker the oxide film, the wider the part of apparent wetting. The wet area on the single sheet is in accordance with a logarithmic law in relation to the dipping time.抄録全体を表示PDF形式でダウンロード (951K) -
菊池 正夫, 堀井 康司, 水野 政夫1979 年 29 巻 3 号 p. 89-94
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーAl-4.2%Zn-1.2%Mg alloy was rapidly solidified in a water-cooled copper mold. Hardness measurements, X-ray small angle scattering method and microscopy were applied. Aging characteristics of the Al-Zn-Mg alloy rapidly solidified depend on the dendrite cell size, but do not on the grain size. The agehardenability is moderated as the dendrite cell size increases. This fact is attributed to the decrease of solute concentrations in the dendrite cell matrix in accordance with the increase in the dendrite cell size.抄録全体を表示PDF形式でダウンロード (1133K) -
菊池 正夫, 福角 幸生, 水野 政夫1979 年 29 巻 3 号 p. 95-101
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーHardness measurements, X-ray small angle scattering methods and transmission electron microscopy were applied. The structure of the base material before welding has an influence on the post-weld aging behavior of the heat-affected zone in the Al-Zn-Mg alloy weld. Considerable softening occurs in the weld heat-affected zone of the alloy which has been over-aged before welding. This softening is attributed to coarsening of precipitates in the weld thermal cycle. The width of the heat-affected zone in the Al-Zn-Mg alloy weld is thinner as the base material has been aged before welding at elevated temperature and for prolonged time.抄録全体を表示PDF形式でダウンロード (1146K) -
大沢 直, 川勝 一郎1979 年 29 巻 3 号 p. 102-107
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーThe diffusion brazing process in which the liquid filler metal is formed by mutual diffusion between the brazement and the insert metal in a brazing cycle was applied to joining Al-Si alloy castings. When the brazement of Al-Si alloy castings with a copper insert metal is heated up to the ternary eutectic point of Al-Cu-Si system at 525°C, a ternary eutectic Al-27%Cu-5%Si alloy will be formed at the interface to act as a brazing filler metal. The diffusion brazing process seemed to be suitable for brazing the Al-Si alloy castings from the viewpoints of good brazability and uniform structure of brazed joint. The brass insert metal is more beneficial than copper on lowering brazing temperature.抄録全体を表示PDF形式でダウンロード (1398K) -
佐藤 四郎, 大越 登1979 年 29 巻 3 号 p. 108-114
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーDifferent sizes of tensile test specimens were extracted from three kinds of butt-welded 5083 plates, namely, high current MIG welding joint in thickness 35mm and Delta Oscillate and Narrow Gap Horizontal welding joints in thickness 25mm. Tensile strength of welded joints rises to a definite value as the increase in cross-sectional area of specimen independent of the size and shape of the specimens used. The reduction of area in the fractured section increases with decrease in W/t (W: specimen width, t: specimen thickness) and has a comparatively good linear relationship to the tensile strength of joint. The optimum size of tensile specimens of butt-welded joint are discussed on the basis of the present and previous works.抄録全体を表示PDF形式でダウンロード (748K) -
今泉 重威1979 年 29 巻 3 号 p. 115-127
発行日: 1979/03/31
公開日: 2008/10/30
ジャーナル フリーPDF形式でダウンロード (2545K)
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