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54 巻, 2 号
選択された号の論文の10件中1～10を表示しています
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武田 喜三1968 年 54 巻 2 号 p. 141-142
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセスPDF形式でダウンロード (2153K) -
荒谷 復夫, 大森 康男, 三本木 貢治1968 年 54 巻 2 号 p. 143-151
発行日: 1968年
公開日: 2010/12/22
ジャーナル オープンアクセスThe activity of oxygen in liquid iron-phosphorus alloy and equilibrium of phosphorus-oxygen in liquid iron in contact with a mixture of solid tetracalciumphosphate and calcium, oxide was studied inia controlled atomosphere of H2-H20 gas mixture.
The results obtained were summarized as follows;
H2(g)+O=H2O(g)
log K=8, 180/T-3.83
ΔG°=-37, 400+17.5T (1500-1650°C)
2P+4CaO(s)+5H2O(g)=4CaO·P2O5(s)+H2(g)
log K=61, 300/T-26.7
ΔG°=-281, 000+122T (1540-1600°C)
2P+4CaO(s)+5O=4CaO·P2O5(s)
log K=96, 600/T-42.9
ΔG°=-442, 000+196T (1540-1600°C)
e(P)O=0.03(0.05-2.0%P), e(O)P=0.05
e(P)P=+0.01--0.04 (0.05-2.0%P)抄録全体を表示PDF形式でダウンロード (1706K) -
藤井 毅彦, 荒木 泰治, 丸川 雄浄1968 年 54 巻 2 号 p. 151-161
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセスThe authors represented the analysis of oxidizing reactions in an oxygen top blowing converter, assuming that the carbon-oxygen reaction in the converter is the metal-gas reaction as previously reported.
The other oxidizing reaction take place in close relation with the decarburization. The decarburization process in the converter is devided into three blowing periods according to its reaction characteristics, and the other reactions can be also explained relatively with decarburization in each blowing period.
On these basis, the reactions of dephosphorizaion and desulphurization in an oxygen converter were discussed mainly in terms of oxygen blowing by analyzing results of laboratory work and practical experiments.抄録全体を表示PDF形式でダウンロード (2223K) -
第1部冷間圧延組織田岡 忠美, 古林 英一, 竹内 伸1968 年 54 巻 2 号 p. 162-190
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセスSystematic studies were carried out on the formation of rolled textures in 3% Si-Fe single crystals with a number of preselected orientations. The rolled textures were determined by the X-ray pole figure method at successive stages of rolling, and the operating slip systems were determined by observation of slip bands on the rolling, side and front surfaces. Among all the crystals used, those in {100}‹011›, {111}‹211› and {112}‹110› orientations maintained their initial orientation almost unchanged during rolling, while the others changed their orientation towards any one or two of the three with increasing reduction by rolling.
To describe the results comprehensively, the crystals were classified into three, i.e., the first series consists of those crystals with a common {100} plane parallel to the rolling plane, the second series with a common ‹011› direction parallel to the transverse direction and the third series with a common ‹011› direction parallel to the rolling direction. In the first series, the crystals rotated around the normal of the rolling plane {001} towards the {001}‹110› orientation with increasing reduction. In the second series, the crystals oriented between {011}‹100› and {211}‹111› rotated around the transverse ‹011› direction towards {111}‹211› and those between {211}‹111› and {100}‹011› rotated towards {100}‹011›. While, all the crystals of the third series maintained their inital orientations almost unchanged during rolling.
The way by which the crystals change their orientations with reduction was semiquantitatively explained by geometrical considerations of the actually operating slip systems having large Schmid factors for compression and tension, taking account of change of their factors with rotation of the crystal. According to the geometrical calculation, the {211}‹011› orientation has been proved to be unconditionally stable for rolling, while the {100}‹011› and {111}‹211› orientations can not be stable unless some restrictions are imposed on the operation of slip systems.抄録全体を表示PDF形式でダウンロード (24634K) -
第2部再結晶組織1968 年 54 巻 2 号 p. 190-210
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセス結果はTable1にまとめて示した. この実験全体について明らかになった再結晶組織に共通した特徴は次のようである.
(1) 再結晶速度は初めの方位に依存し, 特にその圧延組織の型に関係づけられる.圧延圧力, 硬度が大きい程, 速度が大きい.
(2) 圧延率が低いときは, 再結晶組織は弱い多数の成分より成っている.圧延とともに成分の数は減少し, その強度は増加する.
(3) 圧延率が高いときは, 再結晶組織は圧延組織の型に特有なものになる.
(4) 圧延組織がいくつかの成分をもつときは, それぞれの成分の占める領域は常にそれに対応した再結晶組織によって占められる.たとえ1つの成分がほかよりずつと早く再結晶しても事情は変わらない.
(5) 再結晶組織の各成分は圧延組織の対応する成分と関係づけられるが, その方位関係は単一な結晶学的関係では表わせない.
結論として, 特定の集合組織をもった圧延マトリックス中では.特定の方位以外の結晶粒は成長できない.その方位がすなわち再結晶組織にほかならない.抄録全体を表示PDF形式でダウンロード (15253K) -
粕谷 逸男1968 年 54 巻 2 号 p. 211-224
発行日: 1968年
公開日: 2010/10/12
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日本鉄鋼業における使用実績およびその考察大塚 武彦1968 年 54 巻 2 号 p. 225-234
発行日: 1968年
公開日: 2010/10/12
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設備部会クレーンスケール小委員会報告岡部 英雄1968 年 54 巻 2 号 p. 235-248
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセスPDF形式でダウンロード (6672K) -
佐野 幸吉, 伊藤 公允, 水野 信之, 竹之内 朋夫1968 年 54 巻 2 号 p. 249-250
発行日: 1968年
公開日: 2010/10/12
ジャーナル オープンアクセスIn order to study the effects of temperature on the nature of non-metallic inclusions, measurments were done at 1000-1400°C on the reactions between 5-6% Mn-Fe alloy and synthetic oxide which filled a 5mm dia. and 15mm depth hole in the alloy. The results obtained here are as follows: Many oxide particles, precipitated like a layer around the buried oxide. The thickness of precipitation zone increased with increase in temperature, time of heating and the concentration of FeO in the synthetic oxide. The oxide particles had various shapes including spheres. Size of particles increased as the time increased. It was shown from the analysis by EPMA that Mn concentration in the matrix around the particles of irregular shapes decreased, and that Mn/Fe ratio in the particles increased with increasing temperature and time. Accordingly it is supposed that the oxide particles grow by diffusion of manganese from matrix to the particles. Spheric particles, most of which were made of silica or silicates, distributed throughout the precipitation zone. It is supposed that silicon in these particles came from the synthetic oxide by diffusion.抄録全体を表示PDF形式でダウンロード (1389K) -
1968 年 54 巻 2 号 p. 253-259
発行日: 1968年
公開日: 2010/12/22
ジャーナル オープンアクセスPDF形式でダウンロード (1984K)
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