Tetsu To Hagane-journal of The Iron and Steel Institute of Japan最新文献_第9页

Effect of Si and Al Additions to Steel on Machinability in Gear Cutting 钢中添加Si和Al对齿轮切削加工性的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-09-15 DOI: 10.2355/tetsutohagane.tetsu-2021-029

T. Aiso, T. Matsumura

{"title":"Effect of Si and Al Additions to Steel on Machinability in Gear Cutting","authors":"T. Aiso, T. Matsumura","doi":"10.2355/tetsutohagane.tetsu-2021-029","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2021-029","url":null,"abstract":"The influence of Si and Al additions to 0.55 mass% C steel on machinability is discussed in cutting with a fly tool of TiAlN coated high speed steel, as performed in gear cutting. Three model steels are prepared with controlling nearly the same hardness to study the effects of the alloying elements: one reference steel with C as the only alloying element (Base steel), and two steels alloyed also with 1 mass% Si or Al. The cutting tests are performed to obtain the cutting forces, observe the cutting chips and analyze the damage on the rake faces of the tools. The orthogonal cutting data in the cutting force simulation are identified to minimize the discrepancies between the measured and the simulated forces for the tested steels. When cutting the Base steel, few adhered materials form and the coated thin layer is worn mainly by abrasion. When cutting the Si alloyed steel, the coating surface is covered by adhered layers containing Si–O, Fe 2 SiO 4 and FeO, which contribute to the lowest friction and protect the coated thin layer from wear. When cutting the Al alloyed steel, an Al 2 O 3 layer forms on the coating. The Al 2 O 3 layer induces high friction, large cutting forces and cutting heat, resulting in the rapid substrate softening and coating fracture.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90561875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Carbon Content and Austenite Grain Size on Retained Austenite Fraction in Stir Zone of Friction Stir Welded 6%Ni Carbon Steels 碳含量和奥氏体晶粒尺寸对6%Ni碳钢搅拌摩擦焊搅拌区残余奥氏体分数的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-09-15 DOI: 10.2355/tetsutohagane.tetsu-2021-109

T. Miura, H. Fujii, K. Ushioda

{"title":"Effects of Carbon Content and Austenite Grain Size on Retained Austenite Fraction in Stir Zone of Friction Stir Welded 6%Ni Carbon Steels","authors":"T. Miura, H. Fujii, K. Ushioda","doi":"10.2355/tetsutohagane.tetsu-2021-109","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2021-109","url":null,"abstract":"Friction stir welding (FSW) was performed under the two welding conditions (rotation speed-traveling speed) of 150 rpm–100 mm/min and 200 rpm–400 mm/min using 6 mass%Ni steels with different carbon contents from 0.14 mass% to 0.63 mass%. The slightly lower peak welding temperature and the higher cooling rate were predicted under the condition of 200 rpm–400 mm/min. The effects of carbon content and prior austenite grain size on retained austenite fraction in the stir zones were evaluated. When carbon content was 0.30 mass% or more, a fine microstructure consisting of lath martensite and retained austenite was formed in the stir zone. Irrespective of welding conditions, the amount of retained austenite increased with the increase of carbon content. More retained austenite was obtained at the stir zone under the 200 rpm– 400 mm/min condition, which resulted from rapid cooling and finer prior austenite grains compared with the condition of 150 rpm–100 mm/min. The effect of the prior austenite grain size on the amount of retained austenite was successfully extracted, and the finer austenite grain size was concluded to play an important role to stabilize austenite by analyzing the difference in the martensitic start temperatures predicted based on the chemical composition and the retained austenite fraction based on Koistinen-Marburger equation.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84229534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism and Suppression Method of Hydrogen Entry into Steel by Blasting 爆破入氢机理及抑制方法

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-08-15 DOI: 10.2355/TETSUTOHAGANE.TETSU-2020-124

Makoto Kawamori, Fumio Yuse, Y. Fujita, Hideyuki Ikegami

{"title":"Mechanism and Suppression Method of Hydrogen Entry into Steel by Blasting","authors":"Makoto Kawamori, Fumio Yuse, Y. Fujita, Hideyuki Ikegami","doi":"10.2355/TETSUTOHAGANE.TETSU-2020-124","DOIUrl":"https://doi.org/10.2355/TETSUTOHAGANE.TETSU-2020-124","url":null,"abstract":"The effect of blasting on hydrogen analysis was investigated with the aim of establishing a hydrogen analysis method for precisely measuring hydrogen that entered steel in a corrosive environment. The hydrogen existing states of the specimens blasted under various conditions were analyzed using thermal desorption analysis and the hydrogen visualization method by secondary ion mass spectrometry. The phenomenon of hydrogen entry into steel by blasting was demonstrated for the first time. It should be noted that the effect is remarkable in the case of a specimen with a large specific surface area, and the blasting becomes an inhibitory agent in the measurement of the hydrogen content in steel. The hydrogen source for increasing the hydrogen content due to blasting is mainly the water contained in the abrasive. The mechanism of increasing the hydrogen content in steel by blasting is that the fresh surface of the steel exposed by blasting reacts with the water in the abrasive, which results in the hydrogen generation and entry into steel. Additionally, the water in the abrasive remaining on the steel surface reacts with steel during the thermal desorption analysis to release hydrogen. To suppress the increase of hydrogen content by blasting, it is effective to use abrasive with low water content and to remove rust by repeating a short blasting time in order to suppress the temperature rise of the specimen.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89524818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mechanical Properties of Cementite 渗碳体的力学性能

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI: 10.2355/TETSUTOHAGANE.TETSU-2020-114

H. Ohtsuka, M. Umemoto

{"title":"Mechanical Properties of Cementite","authors":"H. Ohtsuka, M. Umemoto","doi":"10.2355/TETSUTOHAGANE.TETSU-2020-114","DOIUrl":"https://doi.org/10.2355/TETSUTOHAGANE.TETSU-2020-114","url":null,"abstract":"This review focuses on the mechanical properties of single-phase cementite. The mechanical properties of interest are 1) sound velocity, 2) elastic constants, 3) hardness, 4) plastic deformation mechanism, 5) wear, 6) fracture toughness, and 7) crystal orientation anisotropy. The effects of temperature, magnetic transition, and alloying elements on the sound velocity, elastic constants, and hardness were reviewed. Furthermore, experimental values of the above mechanical properties as well as other parameters, such as the specimen shape, the quantity of alloying elements, and the measurement method, were collected. A large variation was observed in the reported experimental values. The main reason for this is that cementite is metastable, and it is difficult to prepare large single-phase samples. Other factors, such as sample shape, measurement method, alloying element, magnetic transformation, and crystal orientation anisotropy, also influenced the measured values. Studies using first-principles calculations of cementite were also reviewed. The crystal orientation anisotropy of each elastic constant of single-crystal cementite based on the first-principles calculations are summarized, and its comparison with the experimental results is discussed. By comparing the elastic constants obtained by the first-principles calculations with the measured values, the former values of Young’s modulus and shear modulus are several % and bulk modulus and Poisson’s ratio are several tens of % larger than those of the latter. This is thought to be because of the difference in temperature between 0 K (first-principles calculations) and room temperature (measured value), and theoretical and experimental studies in which the temperature is changed are expected.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83065359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Preferential Site for Scaling on Carbon Steel with Corrosion Products 碳钢腐蚀产物结垢的优先地点

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI: 10.2355/tetsutohagane.tetsu-2021-035

Sota Koyama, Norifusa Inaba, M. Morita, Shin-ichi Motoda

{"title":"Preferential Site for Scaling on Carbon Steel with Corrosion Products","authors":"Sota Koyama, Norifusa Inaba, M. Morita, Shin-ichi Motoda","doi":"10.2355/tetsutohagane.tetsu-2021-035","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2021-035","url":null,"abstract":"Although it has been pointed out that corrosion products are the preferred scaling site, the detail research has not been conducted. In this study, the initial scaling sites on carbon steel with corrosion product were investigated and scaling mechanisms were discussed. Carbon steel sheets were immersed in a solution supersaturated condition for magnesium silicate under normal standard state. Scaling at a corroded part on carbon steel was easier to occur than that at non-corroded part on carbon steel. The corrosion product was comprised of Fe 2 O 3 (Hematite), Fe 3 O 4 (Magnetite), and β -FeOOH (Akaganeite). When the particles of Fe 2 O 3 , Fe 3 O 4 , and β -FeOOH were individually immersed in the solution, the formation of magnesium silicate occurs only on β -FeOOH. One of the preferred scaling sites for magnesium silicate was β -FeOOH. The physical and chemical interactions were investigated. The physical interactions were evaluated by zeta potential, and the results suggested that the repulsion occurs between them. On the other hand, the chemical interaction was evaluated by IR and Raman analyses. Only IR spectrum of β -FeOOH changed. The change was derived from absorption range of Fe–OH in β -FeOOH. The OH group in β -FeOOH may react with silanol group by the dehydration-condensation reaction.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90523401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of Neodymium Content on Creep Properties of 9Cr-3Co-3W-Nd-B Steel 钕含量对9Cr-3Co-3W-Nd-B钢蠕变性能的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI: 10.2355/tetsutohagane.tetsu-2021-103

T. Hamaguchi, M. Mitsuhara, Hideto Kusuhara

引用次数: 0

Effect of Granule’s Moisture on Granulation Rate of Iron Ore 颗粒水分对铁矿石制粒率的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI: 10.2355/TETSUTOHAGANE.TETSU-2020-076

Kenta Takehara, T. Higuchi, Toshiyuki Hirosawa, Takashi Yamamoto

引用次数: 0

Effect of Solution Temperature on Electrodeposition Behavior of Zn-Ni Alloy from Alkaline Zincate Solution 溶液温度对碱性锌酸盐溶液中Zn-Ni合金电沉积行为的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI: 10.2355/tetsutohagane.tetsu-2021-092

S. Bae, S. Oue, Yu-ki Taninouchi, I. Son, Hiroaki Nakano

{"title":"Effect of Solution Temperature on Electrodeposition Behavior of Zn-Ni Alloy from Alkaline Zincate Solution","authors":"S. Bae, S. Oue, Yu-ki Taninouchi, I. Son, Hiroaki Nakano","doi":"10.2355/tetsutohagane.tetsu-2021-092","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2021-092","url":null,"abstract":"Zn–Ni alloys were electrodeposited on a Cu electrode at 10–500 A·m −2 and 5 × 10 4 C·m −2 in an unagitated zincate solution at 293, 313, and 333 K. The effect of solution temperature on the electrodeposition behavior of Zn–Ni alloys from alkaline zincate solutions was investigated. The transition current density at which the deposition behavior shifted from a normal to an anomalous co-deposition was almost identical at 293 and 313 K but increased at 333 K, due to enhanced H 2 evolution and Ni deposition at 333 K. The current efficiency for alloy deposition increased with solution temperature in both the normal (10–50 A·m −2 ) and anomalous (500 A·m −2 ) co-deposition regions. In the normal co-deposition region, Ni deposition and H 2 evolution mainly occurred, and the current efficiency increased with solution temperature due to the stronger promotional effect of increase in solution temperature on Ni deposition. In the anomalous co-deposition region at 500 A·m −2 , Zn deposition and H 2 evolution mainly occurred, and Zn deposition appeared to proceed based on a mixed rate-determining process comprising the charge transfer and diffusion of Zn ions. The current efficiency increased with solution temperature due to the accel-eration of the Zn ions diffusion. The Ni content in the deposited films increased with the solution temperature at all the current densities, since Ni deposition was accelerated to a greater degree than Zn deposition by increasing the solution temperature in the region where the charge transfer process was rate-limiting. The γ -phase of the deposited films also increased with increasing solution temperature.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84648670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

In situ Observation of Reduction Behavior of Multicomponent Calcium Ferrites by XRD and XAFS 用XRD和XAFS原位观察多组分铁氧体钙还原行为

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-06-15 DOI: 10.2355/tetsutohagane.tetsu-2020-077

R. Murao, M. Kimura

引用次数: 1

Design for Carbon Core Pellet toward Co-production with Sinter 炭芯球团与烧结矿联产的设计

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-06-15 DOI: 10.2355/TETSUTOHAGANE.TETSU-2020-080

K. Iwase, T. Higuchi, Takashi Yamamoto, T. Murakami

{"title":"Design for Carbon Core Pellet toward Co-production with Sinter","authors":"K. Iwase, T. Higuchi, Takashi Yamamoto, T. Murakami","doi":"10.2355/TETSUTOHAGANE.TETSU-2020-080","DOIUrl":"https://doi.org/10.2355/TETSUTOHAGANE.TETSU-2020-080","url":null,"abstract":": Current global demand for the carbon emission reduction and the depletion progress of high-grade iron ore deposits require the integrated solution toward sinter and ironmaking process. Several countermea-sures have been proposed regarding the development of highly reducible burden materials for the blast furnace and the use of beneficiated fine iron ores in the sintering machine. However, their application to actual sintering and ironmaking equipment have been limited because the sinter productivity is deteri-orated. Here the present study investigated co-production of the carbon composite pellet and sinter with existing sintering machines. Even if fired in an oxidizing atmosphere, carbon-core-pellets can be pro-duced under conditions that simulate the conventional sintering process. This is because a protective shell over the carbon core inhibits the carbon from combustion. Importantly, the structure and composition of the pellets are properly designed so that this protective shell does not melt overly or break during firing. The design parameters govern the strength and reducibility of pellets after firing, and those influence is analyzed quantitatively. Overall, a pot test trial in which designed pellets have been blended exhibited the viability of the pellet-sinter co-production.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83574679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0