Tetsu To Hagane-journal of The Iron and Steel Institute of Japan最新文献_第2页

低合金鋼の焼戻しマルテンサイトにおける耐水素脆性に及ぼす転位密度の影響位错密度对低合金钢的回火马氏体的耐水脆性的影响

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-10-01 DOI: 10.2355/tetsutohagane.tetsu-2023-047

Shinji Yoshida, Yuji Arai, Tomohiko Omura, Ken Cho, Hiroyuki Yasuda

{"title":"低合金鋼の焼戻しマルテンサイトにおける耐水素脆性に及ぼす転位密度の影響","authors":"Shinji Yoshida, Yuji Arai, Tomohiko Omura, Ken Cho, Hiroyuki Yasuda","doi":"10.2355/tetsutohagane.tetsu-2023-047","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-047","url":null,"abstract":"The effect of dislocation density on hydrogen embrittlement resistance of tempered martensite in low alloy steels was investigated quantitatively. The various samples of which dislocation density was from 0.7×1014 m−2 to 4.5×1014 m−2 were prepared by changing tempering temperature and C content. Then, the yield stress of the samples was between 780 MPa and 1020 MPa. Especially, the change of the C content made various dislocation density samples even though the yield stress is almost same. The hydrogen embrittlement resistance was estimated with four-point bend test. The hydrogen embrittlement resistance decreases with increasing the dislocation density and the yield stress. Although the critical yield stress was changed dramatically by changing C content, the critical dislocation density was almost same (about 2.0×1014 m−2) even though the C content was different. In addition, the absorbed hydrogen content correlated with the dislocation density, and did not depend on the C content in this research. This means that the dislocation density is higher, the hydrogen trapping ability is higher. As the result, when the absorbed hydrogen content reach the critical diffusible hydrogen content, hydrogen embrittlement cracking occurs probably.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368432","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

微生物バイオフィルムによる表面処理技術の定量的評価法: 鉄鋼スラグ上の微生物バイオフィルムとそのpH緩衝作用微生物生物膜表面处理技术的定量评价法:钢铁废渣上的微生物生物膜及其pH缓冲作用

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-10-01 DOI: 10.2355/tetsutohagane.tetsu-2023-039

Toshiyuki Takahashi, Hotaka Kai, Nobumitsu Hirai

引用次数: 0

Mechanism of Formation of Vanadium Carbide Layers on Carbon Steel by Powder Packed Method 粉末填充法在碳钢表面形成碳化钒层的机理

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-10-01 DOI: 10.2355/tetsutohagane.tetsu-2023-044

Daichi Fujisaki, Shigenari Hayashi

引用次数: 0

Influence of Fine Precipitates on Primary Recrystallization Mechanism and Texture Formation in Cold Rolled Fe-3%Si Alloy with Initial Coarse Goss Grains 细相对初始粗Goss晶粒的Fe-3%Si合金冷轧一次再结晶机制及织构形成的影响

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-10-01 DOI: 10.2355/tetsutohagane.tetsu-2023-031

Nobusato Morishige, Kenichi Murakami, Kohsaku Ushioda

{"title":"Influence of Fine Precipitates on Primary Recrystallization Mechanism and Texture Formation in Cold Rolled Fe-3%Si Alloy with Initial Coarse Goss Grains","authors":"Nobusato Morishige, Kenichi Murakami, Kohsaku Ushioda","doi":"10.2355/tetsutohagane.tetsu-2023-031","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-031","url":null,"abstract":"Controlling the primary recrystallization texture is important to improve the magnetic properties of grain-oriented electrical steel through secondary recrystallization. To understand the factors influencing fine precipitates on the primary recrystallization mechanism and texture formation, changes in the recrystallization behaviors with states of precipitates (extremely fine, and coarse) were investigated through cold rolling, pre-annealing, and primary recrystallization annealing in Fe-3%Si alloy with coarse Goss ({110}<001>) grains using EBSD and TEM. Extremely fine MnS precipitated during the recovery stage had significant effects on the suppression of further recovery and recrystallization, especially after pre-annealing at 550°C. Recrystallized Goss grains were observed after primary recrystallization annealing by nucleation and growth irrespective of the states of precipitates; however, in the steel with extremely fine precipitates, {111}<112> grains remained through primary recrystallization annealing. It is assumed that fine precipitates would inhibit the growth of Goss grains and keep {111}<112> orientation, the main orientation in the cold rolled sheet, which would indicate occurrence of continuous recrystallization.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368433","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

平均分子量に基づく二種類の石炭の化学構造モデル基于平均分子量的两种煤炭化学结构模型

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-10-01 DOI: 10.2355/tetsutohagane.tetsu-2023-042

Yuki Hata, Hideyuki Hayashizaki, Toshimasa Takanohashi, Takafumi Takahashi, Koji Kanehashi, Koyo Norinaga

{"title":"平均分子量に基づく二種類の石炭の化学構造モデル","authors":"Yuki Hata, Hideyuki Hayashizaki, Toshimasa Takanohashi, Takafumi Takahashi, Koji Kanehashi, Koyo Norinaga","doi":"10.2355/tetsutohagane.tetsu-2023-042","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-042","url":null,"abstract":"The chemical structure models for the extractions and residues of two types of bituminous coals, A and B, were constructed. The molecular weights of the extractions were determined via gel permeation chromatography (GPC). New standard materials with structures similar to those of coal extraction (i.e., 9, 10- diphenylanthracene, 5,6,11,12-tetraphenylnaphthracene, and chemical compounds A (Mw = 811) and B (Mw = 1135), which were synthesized using the coupling reaction) were adopted for GPC in order to obtain more accurate mean molecular weights than those in literature. Furthermore, a support program for constructing chemical structure models based on 1H nuclear magnetic resonance (NMR) spectra was adopted. The coal models constructed suitably indicate the differences between the types of coal. In particular, it is found that a high pyridine-insoluble fraction extracted rate, which accounts for the most significant difference between the total extracted rates for coals A and B, enhance the coking property of coal A. In addition, the cluster size in the magic solvent-insoluble fraction might affect the softening property of coal.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135368436","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

In-situ Observation of Sliding Interface in Commercially Pure Titanium Sheet with a TiO2 Film 含TiO2薄膜的纯钛板滑动界面的原位观察

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-09-01 DOI: 10.2355/tetsutohagane.tetsu-2023-035

Ryotaro Miyoshi, Gen Tsukamoto

引用次数: 0

Development of Innovative Gasification Process of Used Plastics by Using Fluidized Bed 废塑料流化床气化创新工艺的开发

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-09-01 DOI: 10.2355/tetsutohagane.tetsu-2023-018

Koichi Momono, J. Ishii, Seiji Hosohara, Hideo Kijima

引用次数: 0

密度成層流における液液分散挙動に対する粘度の影響密度成层流中粘度对液体分散行为的影响

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-09-01 DOI: 10.2355/tetsutohagane.tetsu-2023-006

Norifumi Asahara, Katsuhiro Fuchigami, Masafumi Zeze

引用次数: 0

Analysis of Crystal Orientation in Two-Way Cold-Rolled and Annealed Pure Iron 纯铁双向冷轧退火结晶取向分析

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-09-01 DOI: 10.2355/tetsutohagane.tetsu-2023-019

Yutaro Suzuki, Toshio Ogawa, Fei Sun, Y. Adachi, Atsushi Yamaguchi, Y. Matsubara

引用次数: 0

Coating Weight Reduction Technology in Gas Wiping of Hot-Dip Galvanizing on Steel Strip 带钢热镀锌气体擦拭中的涂层减重技术

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-09-01 DOI: 10.2355/tetsutohagane.tetsu-2023-014

Hirokazu Kobayashi, Gentaro Takeda, K. Katoh, T. Wakimoto

引用次数: 0