巻号一覧
24 巻, 4 号
選択された号の論文の16件中1～16を表示しています
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金森 政雄, 植田 昭二, 松尾 信太郎1960 年 24 巻 4 号 p. 201-205
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーSome of the fundamental problems on the metallography of Cu-Al-Ni-Fe alloys encountered when it is used as castings such as large ship propellers are described. The α⁄α+δ-solubility limit curve, the coagulation of Ni- or Fe-rich compound phase,the phase fields at high temperatures and the structures of κ phase are discussed. The structural characteristics of the new alloys and the composition range applicable to large castings from the viewpoint of metallograpy is outlined.抄録全体を表示PDF形式でダウンロード (795K) -
金森 政雄, 植田 昭二, 松尾 信太郎1960 年 24 巻 4 号 p. 205-209
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーThe relationship between the mechanical properties and the structures in Cu-Al-Ni-Fe alloys,especially the effect of coagulation of κ phase on ductility, are described. The function of nickel and iron as alloying elements, the after-effect on elasticity and the fatigue properties of the alloys are also discussed. In summary, we found the mechanical properties of the alloys are mainly governed by the nickel-rich κ phase precipitation, so that iron should be added in a higher content than the nickel content to precipitate a fine κ phase.抄録全体を表示PDF形式でダウンロード (635K) -
金森 政雄, 植田 昭二, 松尾 信太郎1960 年 24 巻 4 号 p. 209-213
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーThe effect of the small additions of Mn, Zn, Si, Pb, Sn, P, Mg, B, Ti, Co, Cr and Be on the structures and mechanical properties of Cu-Al-Ni-Fe cast alloys are described. It was found that Sn, Si and Pb are the most undesirable elements from the viewpoint of engineering service. It is concluded that Sn, Si, Be and Mn have influence on α+κ⁄α+δ+κ phase boundaries and additions of small quanties of Ti and Co has no effect upon the precipitation hardening of cast nickel-aluminium bronze.抄録全体を表示PDF形式でダウンロード (1022K) -
福元 一郎1960 年 24 巻 4 号 p. 213-217
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーAfter rolling contact (dry and with sliding) between spring steel specimens and as-cast and heat-treated ones of C 2∼4% white irons or C 3%Ni Cr white iron, the wear was measured and the wear surfaces were observed. The results were: (1) The wear of white iron increased linearly with the number of rotations in the steady state, and increased with compressive stress, often abruptlry near the yield stress for white irons. (2) A deformed layer, a mixture of cementite particles and α-iron was observed on the surface of white iron. (3) When the primary crystal of white iron was hard, or the C% of white iron was high, blisters were seen.抄録全体を表示PDF形式でダウンロード (890K) -
渡辺 四郎1960 年 24 巻 4 号 p. 217-221
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーFor the production of ferro-manganese or silico-manganese with a good yield it is essential to obtain accurate results of rational analysis and of reduction test of the raw materials, and for the reduction test it is required to carry out an adegnate state analysis of reduced manganese ore. Various aqueous salt solutions and halogenated organic solvents were tried to dissolve metallic manganese fraction alone in the material to be tested but they were all found unsuitable because manganese monoxide is more or less dissolved out together with the metallic fraction. A treatment of 0.10 to 0.20 g of reduced manganese ore sample in a 30-mL methyl alcohol solution, containing 5 g of mercuric chloride kept at 70°C for an hour, was found most suitable to bring only the metallic manganese fraction into solution with only a negligible amount of manganese monoxide. Then the solution is filtered and washed thoroughly with methyl alcohol, and the combined solution of filtrate and washing solvent is used for the determination of manganese by means of ferrous-permanganate method after oxidation with persulfate.抄録全体を表示PDF形式でダウンロード (670K) -
渡辺 四郎1960 年 24 巻 4 号 p. 221-225
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーAlthough a methyl alcoholic solution of mercuric chloride little dissolves the manganese monoxide fraction, as was seen in the previous paper, this solution is still found to have some defect, because the ferro-manganese fraction, produced in the process of reducing of some kind of manganese ores, is not efficiently brought into solution together with metallic manganese. After further trials,a 50 mL methyl alcohol solution containing 5 g of cupric chloride and 0.4 g of sodium carbonate, kept at 40°C for an hour, was found the best for the purpose. The resultant solution containing the digested specimen is, after being filtered and washed, treated with sulfuric acid, to which metallic aluminium is added to remove cupper ion present by heating the solution till it becomes colorless and filtering off; the manganese present in the solution treated thus determined titrimetrically be means of ferrous-permanganate method represents the metallic manganese including that in the ferro-manganese fraction with minimized manganese monoxide dissolution.抄録全体を表示PDF形式でダウンロード (626K) -
西田 恵三, 及川 弘1960 年 24 巻 4 号 p. 225-229
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーWe investigated the sulfide scale formed upon the inside wall of ordinary cast-iron pots for sulfur-smelting. Upon microscopic observation of the sections (about 26 mm thick) and chemical and X-ray analysis at various positions of the scale, we obtained the following results: (1) The scale was mainly composed of pyrrhotite and Si was distributed all over the scale, but C was retained in the inner part as graphite. (2) The S content in the pyrrhotite determined by X-ray analysis was found in good agreement with that from chemical method, and rapidly decreased toward the sulfide/metal interface. (3) Cr seemingly moves toward the outer layer of the scale when its content is small. (4) Si as well as Fe and S were distributed periodically with identical intervals in the scale. But these phenomena may be attributed to another mechanism considered from the practical conditions.抄録全体を表示PDF形式でダウンロード (690K) -
西田 恵三, 及川 弘1960 年 24 巻 4 号 p. 229-233
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーWe investigated the sulfide scale formed upon the inside wall of stainless-steel (about 12%Cr) pots for sulfur-smelting. With th same microscopic and other analytical methods as in the previous report on that of cast-iron, we obtained the following results: (1) The scale is mainly of pyrrhotite, but in the inner layer there is a different compound, named Daubreelite, which is FeCr2S4 and has a spinel-type structure, and the good property against the sulfurisation of stainless steel appears to be come due to this compound. In such a case, Si contained is suppressed into the inner part of scale by this compound, otherwise it will diffuse all over the scale as seen in that of cast-iron. (2) The periodical distribution of alloyed elements (C, Cr and Si) alike that of Fe and S is similar to that of cast-iron. However, this appearance can not be attributed to the condition of practical use, but to flawing in the scale at the optimum thickness, as proposed by Gel’d et al.抄録全体を表示PDF形式でダウンロード (723K) -
若松 茂雄1960 年 24 巻 4 号 p. 233-237
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーA rapid photometric method has been developed for the determination of Al in carbon steel. The method is based on the reaction of Al with eriochrome cyanine-R to form a violet-red colored complex. The procedure is as follows; Dissolve 0.5 g of the sample with 20 mL of 1 to 1 HCl and 1 mL of cone. HNO3. Evaporate to 10 mL. Transfer the cooled solution to a separatory funnel, add 10 mL of 2 to 1 HCl and 20 mL of methyl iso-butyl ketone, and shake for 1 min to extract the Fe. Allow the layers to separate and drain the lower acid layer into a 100 mL volumetric flask, dilute to mark with water. Transfer a 10 mL,or 20 mL aliquot to a 100 mL beaker, add 5 mL of 1% ascorbic acid and 5 mL of 0.07% eriochrome cyanine-R solution. After 1 min, add 5 mL of 40% sodium acetate solution. Adjust to pH 7.0±0.1 with 1 to 1 NH4OH or 1 to 3 HNO3 using a pH meter. Transfer the solution to a 50 mL volumetric flask, dilute to mark with water. Measure the absorbance against blank at 535 mμ.抄録全体を表示PDF形式でダウンロード (571K) -
大倉 与三郎1960 年 24 巻 4 号 p. 237-241
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーAlthough there have been many procedures developed for the dissolution of iron matrix in order to separate non-metallic residues from steel samples, they are all so tedious and time-consuming, because they all require strictly neutral atmosphere and their reactions are so weak that they need long time to dissolve samples. Moreover the residues separated are more or less mixtures of oxides, nitrides, sulfides, and possibly of other non-metallic constituents; nevertheless they are expressed as oxides of silicon, aluminum, manganese, and iron, after a mere elementary analysis. Hence they can be considered very accurate for the purpose of separation neither of oxides only nor of combined total non-metallic inclusions. The author proposes a simple and rapid dissolution procedure for the separation of non-metallic inclusions of plain carbon steel containing less than 0.5% carbon with a ten per cent methanolic bromine solution at room temperature. The applicability of this new procedure is studied in comparison with the methanolic iodine procedure, which is considered one of the best procedures hitherto developed. The bromine method is simple because it can be carried out in an ordinary atmosphere, and is rapid because the solution used is strong enough, and besides it is more accurate for separation of oxide inclusions because it can dissole away nitrides of iron and manganese and sulfide of iron at ordinary temperature together with the matrix, all of which are insoluble by iodine method even at 60°C. The reaction equivalence, as one of the preliminary experiments, was also studied and it was found that the iron matrix is brought into solution FeBr2 independent of the concentration of bromine in methanol within the range of 2.5 to 10 vol-%.抄録全体を表示PDF形式でダウンロード (767K) -
大倉 与三郎1960 年 24 巻 4 号 p. 241-245
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーThe methanolic bromine technique, proposed in the previous report, is studied further in comparison with the methanolic iodine method in this report. The results obtained show that for the dissolution of the iron matrix, the iodine method, when applied to an iron sample at 60°C as well as at ordinary temperature, suffer from the influenc of air and water seriously, whereas the bromine method does not. Stirring for thirty minutes to an hour and a half, after the matrix is entirely dissolved, brings stable results on the residue analysis by bromine as well as iodine method, except that at 60°C, the bromine method gives more or less decreasing values with prolongation of the treating time.抄録全体を表示PDF形式でダウンロード (817K) -
青木 宏一, 関野 昌蔵, 藤島 敏行1960 年 24 巻 4 号 p. 246-249
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーCommercial pure iron, and Al-killed deep-drawing steel sheet were cold-worked by the tensile test machine. The Köster effects thus obtained were analysed using the theory of Granato-Lücke, and that of Cottrell-Bilby. The amplitide-independent internal friction at room temperature came to equilibrium after only 50∼200 hrs, for pure iron, but it took over 1000 hrs for Al-killed steel. It is shown that the recovery of internal friction of our specimens can be explained by the theory of Granato-Lücke in relation to the diffusion of C, N atoms and their pinning dislocations. The dislocation densities of 3.3×1011 (1/cm2) and 3.4×1011 (1/cm2) were obtained for 10% strained pure iron and Al-killed steel respectively. The ratio L /LC in the equilibrium states were 0.3∼0.6, which seemed to be too small, where L is the average length of the dislocation loops between two network points, and L , that of the loops between two impurity atoms.抄録全体を表示PDF形式でダウンロード (464K) -
染野 檀1960 年 24 巻 4 号 p. 249-253
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーThe solubility of hydrogen in zirconium was determined as a function of temperature (range: 500° to 900°C) and pressure (range: 10−3 to 30 mmHg). The diffusion coefficients for H in α-Zr (range: 450° to 700°C) and in β-Zr (range: 870° to 1100°C) were calculated by diffusion-annealing method, which consisted of annealing the diffusion couples of different hydrogen contents in Pb bath, and analysing the hydrogen gradient across the diffusion zone. The calculated diffusion coefficients of H in α-and β-Zr are expressed, respectively, as:
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北川 公, 柴田 則夫1960 年 24 巻 4 号 p. 253-256
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーThe distribution of sulfur and phosphorus in white cast irons (about 3%C) were studied by electrolytic isolation, and the following results were obtained: (1) The concentration ratios (S or P% in carbides/S or P% in white cast irons) of sulfur and phosphorus were 2.2 and 1.4, respectively. (2) The residue isolated from white cast irons containing Mn can be separated from sulfides etc. by treating them ultrasonically and magnetically. (3) When the Mn/S ratios of the white cast irons increase, the amounts of the sulfides dissolved in the electrolytic isolation increased rapidly. (4) The residue obtained by iodine treatment were observed by X-ray diffraction. The diagram obtained was similar to that of FeP.抄録全体を表示PDF形式でダウンロード (504K) -
芥川 武, 小川 清行1960 年 24 巻 4 号 p. 256-260
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーA study of corrosion and mass-transfer of 18-8 stainless steel, mild steel, 5%Al-Fe, croloy 5Si, monel and Nickel in liquid Bi-Pb eutectic alloy by the thermal convection loop was conducted. The change of structure in corroded samples and the precipitates of the cold part of loop were examined by a microscope and the crystal structures of precipitates were studied by the X-ray analysis. The results obtained were as follows: (1) Nickel and monel were completely mass-transfered. The corrosion loss was most remarkable in mild steel; in 18-8 stainless steel and 5%Al-Fe it was moderate and in 18-8 Mo stainless steel and croloy 5Si it was comparatively light. (2) Nickel and nickel-component in monel were mass-transfered and precipitated in the form of the hexagonal or pentagonal γ intermetallic compound in the loop, and a bamboo-leaf-like β intermetallic compund was observed on the surface of the liquid Bi-Pb eutectic alloy. (3) Nickel-rich intermetallic β has Ni-As-type lattice and is expressed by Ni (Bi, Nb) in which the ratio of Bi to Pb is 2 to 1. (4) In 18-8 and 18-8 Mo stainless steel, the phase changes from γ to α, but in the latter the layer depth of phase change is smaller than 10 μ and a regular array of etch pits at 1 μ intervals in the grain was observed near the surface of sample.抄録全体を表示PDF形式でダウンロード (1000K) -
速水 哲博, 西山 善次1960 年 24 巻 4 号 p. 260-264
発行日: 1960年
公開日: 2008/04/04
ジャーナル フリーBy the Berg-Barrett method, X-ray diffraction micrographs of the clustered slip region in elongated aluminium single crystals were taken. The micrographs taken showed four kinds of striations (S1, S2, S′, Sb) related with the active slips. Analysing these striations the following have been found: (1) The striations S′ are observed in both the primary and the secondary slip regions, the former corresponding to the small secondary slip region taking place in the primary slip region, and the latter the other way round. (2) In the secondary slip region there are no kink bands belonging to the secondary slip system but the strain due to deformation is concentrated near the boundary between the primary and the secondary slip regions, probably originated from the constraints due to the lattice deformation in both the regions. (3) The striations S1 are straight and inclined, in the present case, by several degrees of arc to the primary slip trace, in an extent larger than can be attributed to experimental error. (4) The primary slip region, compared with the secondary one, has a larger bending strain of long range (of the order of the width of a kink band).抄録全体を表示PDF形式でダウンロード (1053K)
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