巻号一覧
29 巻, 2 号
選択された号の論文の17件中1～17を表示しています
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森永 卓一, 後藤 武夫, 高橋 恒夫, 間宮 巌1965 年 29 巻 2 号 p. 119-125
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーThe transformation of α and β phases during the tempering of a quenched hypo-eutectoid Cu-Be alloy has been studied.
Water quenched specimens were tempered and subjected to microhardness, micrographic and X-ray measurements.
The results obtained were as follows:
(1) On tempering below 350°C, the α and β phases harden almost in parallel with each other, while on tempering at 400°C hardening of the β phase is accelerated followed by appreciable softening.
(2) High temperature X-ray diffraction results indicate that on heating from room temperature, the initial transformation process is due to an eutectoid reaction of the β phase and decomposes almost completely when the specimen reaches 300°C, while the precipitation within the coexisting α region still proceeds throughout the 60 minutes holding at 300°C.
(3) Transformation in α and β phases takes place almost independently of each other in each grain and grain boundary, and there is no positive evidence that the grain boundary precipitation of the α phase is promoted by the eutectoid decomposition of the β phase at the α-β interface.抄録全体を表示PDF形式でダウンロード (996K) -
神森 大彦, 桧山 泰夫, 堀田 渉1965 年 29 巻 2 号 p. 126-129
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーA spectrophotometric determination of nitrogen with the organic solvent extraction was studied, and it was found that blue coloured compounds of nitrogen with phenol and sodium hypochlorite were completely extracted with isobutyl alcohol only by the use of a salting-out reagent. Various conditions for the determination were also examined to decide the optimum condition. By applying the results obtained by the fundamental experiments, a procedure for the determination of nitrogen in iron and steel was established as follows: After the dissolution of the sample with hydrochloric acid, nitrogen is separated by the steam distillation procedure. The solution is neutralized with sodium hydroxide, to which phenol and sedium hypochlorite are added. 10 minutes later, the solution is saturated with sodium chloride and the coloured compound is extracted with isobutyl alcohol. Nitrogen is determined by the measurement of absorbance of the isobutyl alcohol layer at 660 mμ. The method can be used successfully for the determination of up-to 0.2 μg nitrogen in iron and steel and requires about 20 minutes.抄録全体を表示PDF形式でダウンロード (931K) -
池上 卓穂, 神森 大彦, 鈴木 堅市1965 年 29 巻 2 号 p. 129-132
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーIn the experiment on the continuous redcution of iron ore, a rapid determination of the reduction rate became necessary. Instead of the existing method based on the determination of metallic and total irons, a new method which determines the residual oxygen in the reduced iron ore has been studied. From fundamental experiments, the authors recommend the following procedure: The reduced iron ore wrapped in a tin sheet is put into a graphite crucible which is heated in argon atmosphere at 1900°C. The proceeded carbon monoxide is oxidized by iodine pentoxide and absorbed into a barium hydroxide solution. The change in electric conductivity of the solution is measured and the oxygen content in the sample is determined with the calibration curve. For the separate determination of oxygen in iron oxide, silicon dioxide and aluminum oxide, the crucible is heated at 1400°, 1600° and 1900°C, respectively. The time required for the analysis is about ten minutes for total oxygen and about thirty minutes for oxygen in each of the above three oxides.抄録全体を表示PDF形式でダウンロード (708K) -
西山 善次, 岡 宗雄, 中川 洋1965 年 29 巻 2 号 p. 133-138
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーSubstructures of the martensite in quenched commercially pure titanium have been examined by means of transmission electron microscopy. The result is that the martensite crystal has three kinds of lattice defect: internal twins, stacking faults and dislocations. The twinning plane of the internal twins is {10\bar11}. The twin of this kind has never been observed in case of the deformation of α-Ti. It is therefore thought that the {10\bar11} twin is produced by the martensite transformation but not by the stress accompanying it. The stacking faults and dislocations are found on (0001) planes of both the matrix and the internal twins of the martensite crystal.抄録全体を表示PDF形式でダウンロード (1005K) -
西山 善次, 岡 宗雄, 中川 洋1965 年 29 巻 2 号 p. 139-143
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリー{10\bar11} transformation twins, produced in the martensite of commercially pure titanium, have been investigated by means of transmission electron microscopy and discussed in relation to the martensitic transformation. The results are as follows: (1) The thickness of the twin is 250∼3000 Å, and the appearance of these twins is different from that of internal twins in the martensite of Fe-Ni alloys or high carbon steels. (2) (\bar1011) transformation twins have three kinds of incohorent boundaries of (12\bar31)T, (0\bar223)T and (11\bar20)T. (Suffix ‘T’ means the twin lattice.) From the angles between these boundaries composing nodes, it is concluded that these boundaries must not be in thermal equilibrium, and consequently they are configurations resulting from the martensitic transformation. (3) It is deduced that the (\bar1011) twin plane has come from (\bar101)β of the matrix, and therefore the twin plane must have played an important role of the transformation.抄録全体を表示PDF形式でダウンロード (954K) -
1965 年 29 巻 2 号 p. 143
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリー -
上田 益造, 関 文男, 細川 一夫1965 年 29 巻 2 号 p. 144-150
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーThe lead adherence to the specimens which were previously annealed to eliminate the internal strain, relating to the effects of the grain size, structure and carbon contents, was studied. The following results were obtained.
(1) As lead diffuses into grain boundaries of the specimens lead coating on ferrite is possible. The specimen SPC-3 normalized at 950°C for 30 min yields heavy adherent coating. But the specimen annealed at 750°C for 30 min has in ferior coating to the raw material because of the coarse grain.
(2) Lead adheres to the pearlite and the spheroidized cementite in steel and to the graphite in plane cast iron: Accordingly, the adherence increases in the order of ferrite→hypo-eutectoid steel→eutectoid steel→hyper-eutectoid steel→cast iron, and the coating thickness increases with the carbon content.
(3) The coating on steel containing Mn and Si and on 13-Cr stainless steel is possible. In this case, it appears that the intermediate layer is formed.
(4) Lead cannot adhere to the oxide film and the decarburized layer in the specimen. The existence of inclusions, blow holes and lattice defects seems to make lead coating possible.抄録全体を表示PDF形式でダウンロード (1564K) -
榊 隆1965 年 29 巻 2 号 p. 151-158
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーThis experiment was conducted to establish a simple and accurate method for determination of the zirconium content in a steel containing tungsten. First of all, the fundamental condition for the spectro-photometric determination of zirconium with xylenol orange was studied.
Next, the condition for the separation of zirconium from tungsten by cupferron was examined, and the procedure was decided.
The absorption maximum of the xylenol orange complex salt of zirconium is at 545∼550 milli microns. However, the relation between the zirconium content (0.00∼0.30 mg/100 mL) and the absorbance follows Beer’s law only at the wave-length of 532 milli microns. Therefore, in this experiment, the absorbance was measured at 532 milli microns. Hydrochloric, nitric and perchloric acids do not interfere with the formation of the xylenol orange complex salt of zirconium, if these acids are neutralized with ammonium hydroxide. In this method, there is no significant effect even in case 200 mg of iron, 15 mg each of manganese and molybdenum, 50 mg each of nickel and chromium, 5 mg each of copper and titanium, 0.25 mg of tungsten, 20 mg each of vanadium and cobalt, 80 mg of aluminum, and 2 mg of selenium are contained in the separated sample solution. Niobium interferes.
The complex salt of zirconium cupferrate is formed quantitatively in a solution of pH 5.0∼7.5 containing tartaric and oxalic acids. Potassium salt interferes with the formation of the complex salt of zirconium cupferrate, but sodium salt does not. Therefore, the oxides of tungsten and zirconium were fused with sodium pyrosulfate. By means of this separation method with cupferron, zirconium can be separated from tungsten easily and accurately.
As a result of the experiment, the author succeeded to establish a method by which 0.005 to 1% zirconium in a steel containing tungsten can precisely be measured without difficulty. The zirconium contents in synthetic and actual samples were measured by this method with satisfactory results.抄録全体を表示PDF形式でダウンロード (992K) -
金子 秀夫, 西沢 泰二, 玉置 維昭1965 年 29 巻 2 号 p. 159-165
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーChemical and X-ray examinations were made on phosphides isolated electrolytically from Fe-2.5%P-M ternary alloys, in order to clarify the phase-relationships between phosphide-phases and iron-phase in Fe-P-M systems, and also to determine the phosphide-forming tendency of alloying elements in steel.
It was observed that Ni, Co, Si, Al, W and Mn would have a weak tendency to combine with phosphorus in steel, because any phosphide phases except Fe3P were not found in ternary systems, Fe-P-Ni, Fe-P-Co, Fe-P-Si, Fe-P-Al, Fe-P-W and Fe-P-Mn. On the other hand, special phosphides, FeMoP, FeNbP, FeTiP, FeZrP, Fe4ZrP2, V2P and Cr2P were found in ternary systems containing Mo, Nb, Ti, Zr, V and Cr, respectively. This means that these elements would have a strong phosphide forming tendency in steel.抄録全体を表示PDF形式でダウンロード (1276K) -
金子 秀夫, 西沢 泰二, 玉置 維昭, 谷藤 暁男1965 年 29 巻 2 号 p. 166-170
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーAccording to the Fe-P phase diagram, the solubility of phosphorus in α-Fe at 1050°C is known to be 2.8 wt%. This value is extremely large compared with the amount of phosphorus found in commercial steel. Therefore, it has been supposed that phosphorus in steel might dissolve in the matrix, and any phosphide phases such as phosphide-inclusions or phosphide-precipitations might not be present at all.
However, it has been confirmed in the present research that the solubility of phosphorus in α and γ-iron is remarkably decreased by the alloying of phosphide forming elements. From this experiment it should be concluded that phosphide phases are present in commercial steels containing the strong phosphide forming elements and in some cases, the phosphide-precipitation takes place, which is expected to play an important role in aging phenomena such as the temper-brittleness of alloy steels.抄録全体を表示PDF形式でダウンロード (1394K) -
五弓 勇雄, 阿部 秀夫, 伊藤 邦夫1965 年 29 巻 2 号 p. 171-176
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーEffects of alloying on the preferred orientations in the sheet textures were investigated with binary iron alloys; Al-Fe, Si-Fe, Ti-Fe, V-Fe, Cr-Fe and Mo-Fe. The alloys were prepared by melting in air in an alumina crucible and cast into a permanent mould. The ingots of 200 g weight and 15×15 mm2 cross section were hot forged and annealed. The plates 2.5 mm in thickness were then reduced to 1.5 mm, 1.0 mm and 0.5 mm by rolling at room temperature.
Magnetic torque curves and X-ray pole figures of the specimens were determined in cold-rolled and annealed states.
The preferred orientations observed in the cold-rolling textures were essentially the same as those observed in sheets of pure iron and α-Fe alloys. In Al-Fe and V-Fe alloys, however, a remarkably high concentration in the (100)[011] orientation was observed.
In the annealing textures, all the preferred orientations which had been previously reported were detected. In addition, a concentration in an orientation near (21\bar5)[211] was observed in the pole figures of some specimens of Al-Fe and V-Fe alloys. Al-Fe and Si-Fe alloys showed a relatively high pole density in the (110)[001] and the (100)[001] orientations, Ti-Fe alloys in the (11\bar1)[112] orientation, V-Fe alloys in the orientation near (21\bar5)[211] and Cr-Fe alloys in the ⟨011⟩\varparallelR.D. orientations with the maximum intensity near (31\bar1)[011]. Mo-Fe alloys showed relatively weak preferred orientations.
Secondary recrystallization took place in a few specimens of V-Fe alloys on annealing at 1300°C and large secondary grains with the (100)[001] orientation were found in them.抄録全体を表示PDF形式でダウンロード (773K) -
前田 良一, 石部 浩1965 年 29 巻 2 号 p. 177-184
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーSome mechanical, chemical and physical properties of age hardenable Cu-Ni-Ti and Cu-Ni-Ti-Al alloys with various Ni, Ti and Al contents were investigated. The results obtained were as follows:
(1) The alloys containing about 2%Ni, 0.6%Ti, 0.2%Al and balanced Cu showed good aging properties.
(2) The most proper ratio of Ni to Ti were about 3.5; this value is nearly equal to Ni/Ti (wt%)=3.68 of intermetallic compound Ni3Ti.
(3) The addition of Al seems to improve the oxidation resistance of the alloys.
(4) Tensile strength of 60 kg/mm2, elongation of 10%, Vickers hardness of 180 and electric conductivity of 60% IACS were obtained when the alloy containing 2.06%Ni, 0.58%Ti and balanced Cu was treated by 950°C×1 hr solutioning and 600°C×1 hr aging.
(5) This alloy showed good heat resistance and the temperature to start softening was about 650°C.
(6) The oxidation resistance of Cu-Ni-Ti and Cu-Ni-Ti-Al alloys were superior to conventional Cu-Cr alloys.抄録全体を表示PDF形式でダウンロード (1667K) -
中村 文俊, 斎藤 省三, 岡林 邦夫1965 年 29 巻 2 号 p. 185-191
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーThe effect of the size of a specimen on wear includes the effect of the shape and mass of the specimen, and therefore its content is considerably complicated. In this stady, the effect of the frictional area of a specimen on wear is separated from that of size of the specimen to a certain extent, and the seizure phenomena and a practical application of the results of wear test were discussed.
Experiments were made in vacuum (1∼3×10−4 mmHg) on carbon steels having various shapes and dimensions.
The results obtained are as follows:
(1) When the frictional area of the specimens is the same, the difference in the shape and mass of the specimens makes almost no difference in wear.
(2) The size of the frictional area has a considerably effect on wear.
(3) When the seizure phenomena are found, ∂WR⁄∂L becomes equal to zero in the stationary condition. (WR is the increased weight of a specimen and L is the frictional distance).
(4) When the results of wear tests are applied to practical problems, the wear mechanism needs a great care.抄録全体を表示PDF形式でダウンロード (1114K) -
門間 改三, 須藤 一, 早乙女 和已, 根本 正1965 年 29 巻 2 号 p. 191-196
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーFor the purpose of obtaining some knowledge on the effect of alloying elements upon the elevated temperature strength of low alloy heat-resisting steels, the influences of some alloying elements upon the hot hardness of low alloy steels have been investigated. The conclusions are as follows: At room temperature, the effect of dispersion of carbide on hardness is very strong, however the effect decreases rapidly above 400°C. The Cottrell effects by dissolved carbon and nitrogen show peaks of hardness at 300°C and 250°C respectively, but their contributions to hardness at 600°C are very small. The solid solution hardening by substitutional atoms is not so strong at room temperature, but the contribution to hot hardness increases slightly with increasing temperature up to 600°C. The contribution of interaction between interstitial solid solution atoms and substitutional solid solution atoms (I-S effect) to hardness appears at temperatures above 300°C, and increases with increasing temperature. The I-S effect cannot be ignored for the high temperature strength of low alloy steels.抄録全体を表示PDF形式でダウンロード (876K) -
白川 勇記, 雨宮 大二, 阿部 健1965 年 29 巻 2 号 p. 197-199
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーIt was found previously that the magnetic properties of Al-Ni-Co type N.K.S.-1F permanent magnets show anomalies when heated at about 875°C and then field cooled, and the maximum energy product of this magnet alloy thus treated is the same as or better than that by the high temperature treatment. The variation in the temperature of the low heat treatment was investigated in a series of magnet alloys containing various Ni contents. This paper deals with the variation in the low heat treatment when measured a series of magnet alloys with 12 to 20% Ni contents. The experiments show that the temperature of the low heat treatment decreases as the Ni content increases, and the gradient of variation is about 22.6°C per unit %Ni. The curie points of these magnets measured at the same time are almost constant, and coincides with the temperature of the low heat treatment TL at the standard composition of 16%Ni; it becomes lower than TL with decrease of the Ni content and higher with increase of the Ni content. It is assumed that the effect of the low heat treatment is most effective when the difference between curie points and TL is the smallest.抄録全体を表示PDF形式でダウンロード (622K) -
白川 勇記, 雨宮 大二, 阿部 健1965 年 29 巻 2 号 p. 200-203
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーIn the previous papers, it was found that the magnetic properties of Al-Ni-Co type N.K.S.-1F Permanent magnet show an anomally at about 875°C, and the maximum energy product of magnet heat at this temperature is the same as or better than that subjected to the high temperature treatment, and the variation in the temperature of the low heat treatment were measured in a series of magnet alloys containing various Al or Ni contents. In this paper, the variation of the low heat treatment has been investigated in a series of magnet alloys containing 0 to 32%Co. The experiments show that the temperature of the low heat treatment lowers and the curie points A2 rises as the content of Co increases, but becomes almost constant in alloys containing more the about 24%Co. Also, A2 coincids with the temperature of the low heat treatment TL at the standard composition 24%Co whose magnetic properties are best, is lower than TL with a lower Co content, and is higher with a higher Co content. Thus, the low heat treatment is most effective when the difference between A2 and TL is the smallest.抄録全体を表示PDF形式でダウンロード (660K) -
三好 康雅, 中江 仁1965 年 29 巻 2 号 p. 203-204
発行日: 1965年
公開日: 2008/04/04
ジャーナル フリーPDF形式でダウンロード (252K)
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