出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.81, no.4, pp.N184-N185, 1995-04-01

著者

山木 正義

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.45, no.4, pp.438-450, 1959-04-01 (Released:2009-05-26)

被引用文献数

1

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.3, no.11, pp.1163-1185, 1917-11-25 (Released:2009-07-09)

著者

内山 道良

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.37, no.1, pp.45-56, 1951-01-25 (Released:2009-07-09)

参考文献数

57

被引用文献数

2

---

Since the end of the War, spring steel has become one of the most important special steels in Japan.In 1948, the production of spring steel amount to 29, 714 tons in the total amount of special steel production of 87, 136 tons. Meanwhile the level of quality of spring in Japan, may be lower than that of in America and in Europian countries. Therefore, for general reference, the auther collected here the various recent data of spring steel, such as the history, chemical composition, mechanical property, heat treatment, mass effect, cold working etc, which will be thought to be useful for manufacturing spring and spring-steel.

著者

足立 吉隆 新川田 圭介 奥野 晃弘 弘川 奨悟 田口 茂樹 定松 直

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

pp.TETSU-2015-069, (Released:2015-10-03)

参考文献数

19

被引用文献数

2 6

---

Prediction of a stress-strain curve of ferrite-martensite DP steels was studied by a combined technique of Bayesian inference and artificial neural network. To screen a descriptor to be used for neural network analysis, material genomes such as volume fraction, micro-hardness, handle, and void of martensite phase, and micro-hardness of ferrite phase were examined by Bayesian inference. In a case of small data set, a machine learning method to predict mechanical properties reliably was proposed.

著者

田川 舜朗 小野 弘路 多鹿 洋

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.67, no.4, 1981-03-05

著者

戸髙 義一 戸田 健一 堀井 基弘 梅本 実

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.101, no.10, pp.530-535, 2015 (Released:2015-09-30)

参考文献数

24

被引用文献数

11

---

The effect of lattice defects on the tribological behavior for low friction coefficient under lubricant was investigated in the nanostructured steels produced by heavy plastic deformation processes. In the surface-nanostructured SUJ2 bearing steel, the stable tribological behavior with low friction coefficient was observed in the ball-on-disk tests under PAO (Poly-α-Olefin 17) - oil or ester - oil, in comparison with the non-deformed steel. This phenomenon was enhanced by using the lubricant with polarity (ester - oil). In addition, the similar phenomenon was observed in the ULC (ultra-low carbon) steel with high-density of lattice defects (grain boundary, dislocation and so on). This reason seems that the molecules of lubricant interacted strongly with the nanostructured surface due to the deviation of electrons (polarization) at the region with high-density of lattice defects.

著者

K.O.

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.4, no.12, pp.1301-1315, 1918-12-25 (Released:2009-07-09)

著者

佐々木 直彦 桃野 正

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.93, no.12, pp.792-798, 2007-12-01

被引用文献数

1 3

---

The Japanese sword has excellent strength-toughness balance given by two traditional processes. One process is compounding of inner tough iron and outer strong steel. And the other process is cooling-rate control quenching by using thickness of clay-coating before quenching. However, it is a precondition for acquiring high strength-toughness that carbon content of sword parts are regulated in proper quantities. Carbon content of sword parts is very important and controlled under forging process which contains TSUMI-WAKASHI (forge-welding piled steel chips) work and fold-forging. Therefore, changes in carbon content of TAMA-HAGANE steels and carbon steels under traditional forging process were investigated in this study. Changes in carbon content depended on enclosing decarburized or carburized surface in steel as forge-weld interface. Total changes in carbon content were proportional to total layers of included surface in steel. Changes in carbon content per one forge-welded layer. "d (mass%/layer)" was ruled by carbon content of raw materials "C_0 (mass%)". When C_0 is over 0.2 mass%, carbon content of forged steel is decreasing and the more C_0, the more |d|. C_0 is under 0.2 mass%, carbon content is increasing. The mass of forged steels is 4% increasing per one fold-forging cycle, but d is not affected by changes in mass of them.

著者

Makita Soji

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.15, no.3, pp.187-200, 1929-03-25

著者

齋藤 泰一

出版者

The Iron and Steel Institute of Japan

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.35, no.4, pp.98-103, 1949-04-25 (Released:2010-01-22)

参考文献数

9

---

The reaction of chromium under basic, slag has been experimentally studied in laboratory furnace. In the basic slag (CaO/SiO2>2), it was found that the oxide of chromium presents as chromic-oxide, so the reaction of chromium under basic slag should be cxpressed as follow:-2[Gr]+3(FeO)_??_(Cr2O3)+3[Fe]The auther proposed as the temperature coeffcient of the equilibrium consant KBCr=(Cr2O3)/[Cr][Cr]2(FeO)3 of this reactionlog KBCr=15, 000/T-10.0

著者

三島 徳七 椙山 正孝

出版者

一般社団法人 日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.30, no.8-9, pp.233-234, 1946-01-25 (Released:2009-07-09)

著者

渡辺 ともみ

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.91, no.1, pp.108-115, 2005-01-01

参考文献数

34

---

The traditional steel manufacturing (Tatara) of Japan which developed in the early modern times fell into the decline in the Meiji Period on the other hand, because it is being made by reducing iron sand with charcoal, the amount of phosphorus and sulfur of Tatara iron is low Therefore it was adopted as a raw material of the alloy steel at Naval Arsenal of the Meiji latter period The purpose of the main subject is to explain that process The quality which the navy demanded was limited to the speck of the low phosphorus Then, the navy never tried to admit the cost which corresponded with that quality The makers of Tatara iron had efforts to cope with a naval requirement But, they had to give up their Tatara business suddenly That was because naval warship manufacture stopped observing Washington disarmament treaty They advanced all together to charcoal industry after that

著者

依田 連平

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.65, no.7, pp.725-746, 1979-06-01 (Released:2010-02-22)

参考文献数

282

著者

吉武 睦海 土山 聡宏 高木 節雄

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.98, no.6, pp.223-228, 2012 (Released:2012-05-31)

参考文献数

17

被引用文献数

3 22

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Stable austenitic stainless steels containing 0.1 % carbon and nitrogen (Fe-18%Cr-12%Ni-0.1%C and Fe-18%Cr-12%Ni-0.1%N alloys) were tensile-tested to clarify the difference between the effects of carbon and nitrogen on the work hardening behavior as well as the deformation microstructure development in austenite. The carbon-added steel exhibited a much larger work hardening rate than the nitrogen-added steel in the high strain region (true strain > 0.25) although the dislocation accumulation was more significant in the nitrogen-added steel. EBSD analysis revealed that deformation twins were more frequently formed in the carbon-added steel, which leads to the TWIP effect. The reason why the nitrogen-added steel showed the less twinning behavior seemed to be mainly related with the short range order (SRO) composed of Cr and N atoms.

著者

佐藤 知雄 山中 直道

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.25, no.8, pp.658-668, 1939

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The following equations of the carburizing equilibrium have been confirmed by many investigators.<BR>3Fe+2CO Fe<SUB>3</SUB>C+CO<SUB>2</SUB>[Fe-C-O System]<BR>3Fe+CH<SUB>4</SUB> Fe<SUB>3</SUB>C+2H<SUB>2</SUB>[Fe-C-H System]<BR>Lately Mr. Madono presented the opinion in which he asserted the carburizing equation should be represented as follows:<BR>(Solid Sol.)+2CO (Solid Sol.)+CO<SUB>2</SUB><BR>(Solid Sol.)+CH<SUB>4</SUB> (Solid Sol.)+2H<SUB>2</SUB><BR>On account of the unstableness of Fe3C, after iron or steel is saturated with carbon the equilibria coincide with 2CO C+CO<SUB>2</SUB> or CH<SUB>4</SUB> C+2H<SUB>2</SUB>. He carried out experiments on carburizing of the electrolytic iron sheet for a long time at various temperatures with the solid carburizing mixture, and the result obtained was that C contents absorbed in the iron sheet coincided with the saturated concentration of graphite in austenite. He cosidered that this result proved the truth of his own theory.<BR>The authors also carried out carburizing experiments with the electrolytic iron wire, 0&middot;5mm thick, by pure CO gas, and found that at a temperature below A1 point the formation of Fe<SUB>3</SUB>C was surely recognized by means of magnetic and X-ray analyses, and at a temperature above A1 point C was absorbed over the saturation value of that in austenite. In considering this fact, the authors supports the old theory of carburization. In the case of the pack carburizing, however, the carburizing action stops when C% reaches the saturation value at any temperature, but this fact does not suggest the carburizing equilibrium to be 2CO C+CO<SUB>2</SUB> in all cases.

著者

近藤 真一 原 行明 須賀田 正泰 土屋 勝

出版者

一般社団法人 日本鉄鋼協会

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.53, no.7, pp.724-726, 1967-06-01 (Released:2010-10-12)

参考文献数

4

被引用文献数

2 2

著者

飯塚 元彦 梶川 脩二 金井 一男 中村 博巳

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.65, no.11, 1979-09-05

著者

三島 徳七 桶谷 繁雄

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 (ISSN:00211575)

巻号頁・発行日

vol.25, no.3, pp.206-211, 1939

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Les auteurs ont &eacute;tudi&eacute; le film mince du soufre orthorhombique au moyen des rayons cathodiques et ils ont trouv&eacute; que<BR>(1) L'&eacute;tude quantitative des diagrammes &eacute;lectroniques fournit les trois param&egrave;tres suivants: a=5&middot;2&Aring;; b=6.4&Aring;; c=12&middot;2&Aring;, soit exactement les valeurs trouv&eacute;es par Bragg.<BR>(2) Il a &eacute;t&eacute; possible de suivre le passage progressif des diagrammes de r&eacute;seau &agrave; 3 dimensions aux diagrammes de r&eacute;seaux &agrave; 2 dimensions, gr&acirc;ce &agrave; la sublimation progressive des p&eacute;llicules de soufre dans le vide. Nous avons obtenu les diagrammes correspondant aux plans que l'on observe le plue souvent pour des cristaux macroscopiques de soufre orthorhombique, soit les plans (100), (010), (011), (111).<BR>(3) Sous l'influence de l'echauffement produit par le bambardement &eacute;lectronique ainsi que de la sublimation, il apparait parfois un brusque changement dans l' orientation du soufre &eacute;tudi&eacute;.

著者

貴堂 高徳 辻川 茂男

出版者

社団法人日本鉄鋼協会

雑誌

鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)

巻号頁・発行日

vol.75, no.8, pp.1332-1337, 1989-08-01

被引用文献数

1

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Critical conditions to repassivate growing crevice corrosion in terms of electrode potential, E_R, temperature, T_R, and NaCl concentration, C_<NaCl, R>, were determined for metal/metal-crevice of ASTM Grade 12 (G 12 Ti) and Ti-x(=0&acd;2%)Ni-y(=0&acd;0.4%) Mo alloys. G 12 Ti with 0.8%Ni and 0.3% Mo has more noble E_R values than commercially pure Titanium (C.P. Ti) and this tendency is more enhanced in lower concentrations of NaCl solutions. G 12 Ti is predicted to be resistant to crevice corrosion in solutions containing as high as 9% NaCl at 100℃, which is markedly higher than 1% NaCl or less as the highest concentration for C.P. Ti to be resistant at the temperature. E_R value for Ti-xNi-yMo alloy depends almost on Ni content. Sufficiently noble value of E_R is attained for the alloys with Ni contents over 0.2%. The beneficial effect of Ni could be explained from formation of Ti_2Ni which works as Pd does in Ti-0.15 Pd alloy. C_<NaCl, R> depends not only on Ni content but also on Mo content. It decreases with increasing Mo content in the range from 0 to 0.1&acd;0.2%, above which C_<NaCl, R> increases with increasing Mo content. This shows beneficial effect of Mo combined with Ni. Based on the results of Ti-xNi-yMo alloy, characteristics of G 12 Ti are found to be accounted for approximately through its contents of Ni and Mo.