Tetsu To Hagane-journal of The Iron and Steel Institute of Japan最新文献

量子ドットを活用した冷間圧延時のロールバイト油膜厚さ分布の測定利用量子点测定冷轧时的滚压和油膜厚度分布

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-040

Masahiro Shimura, Daisuke Kasai, Takayuki Otsuka, Naoki Yamashita, Tomoko Hirayama

{"title":"量子ドットを活用した冷間圧延時のロールバイト油膜厚さ分布の測定","authors":"Masahiro Shimura, Daisuke Kasai, Takayuki Otsuka, Naoki Yamashita, Tomoko Hirayama","doi":"10.2355/tetsutohagane.tetsu-2023-040","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-040","url":null,"abstract":"During the cold rolling of flat steel products, lubrication is critical to achieve stable rolling. However, the oil film thickness distribution in the roll bite and its effect on friction between the work roll and strip have not been clarified thus far. This study aimed to elucidate the relationship between the oil film thickness distribution and friction by focusing on the rolling oil viscosity and steel grades, because they significantly affect the friction between the work roll and strip. Rolling oil was prepared with quantum dots as the fluorescent additive and used in rolling experiments to identify its distribution. Furthermore, cold rolling experiments were conducted using two types of oil with different viscosities and three different steel grades, namely low-carbon steel (LCS), high-strength steel (HSS), and advanced high-strength steel (AHSS) with tensile strengths of 270, 590, and 1180 MPa. Subsequently, the oil film thickness distribution on the steel strip surface was visualized using quantum dots by fluorescence microscopy. It was demonstrated that the higher the tensile strength of the steel or the higher the oil viscosity, the wider the rolling oil distribution on the strip surface. Numerical analyses revealed that the rolling oil distribution on the steel sheet surface was more widespread for AHSS and HSS than for LCS. The high surface pressure between the roll and steel plate may have increased the oil leaching area by increasing the oil viscosity. These findings demonstrate that rolling oil permeation from the oil-pits reduces the friction between the work rolls and strip.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"40 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161057","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

Flow Stress of Duplex Stainless Steel by Inverse Analysis with Dynamic Recovery and Recrystallization Model 双相不锈钢流动应力动态恢复与再结晶模型反演分析

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-048

Kyunghyun Kim, Hyung-Won Park, Sheng Ding, Hyeon-Woo Park, Jun Yanagimoto

引用次数: 0

電気抵抗率測定を用いた塑性変形に伴うBCC鉄中の格子欠陥密度変化の定量利用电阻率测量BCC铁中伴随塑性变形的晶格缺陷密度变化的定量

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-050

Soichiro Takenaka, Ryohei Takahashi, Kazuhiro Ishikawa, Yoji Miyajima

引用次数: 0

An Optimization for Ore Stockyard Layout Operation Schedules Using Multi-Start Greedy Algorithm 基于多起点贪心算法的堆场布置作业调度优化

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-043

Akira Kumano, Yusuke Yoshinari, Osamu Yamaguchi, Toru Miyazawa

引用次数: 0

単結晶Al2O3板を通した液体金属中のAl2O3粒子／単結晶Al2O3板間の焼結界面のその場観察单晶体al<sub & gt;2 &爱尔蒂;/ sub & gt;o &爱尔蒂;sub & gt;3 &爱尔蒂;/ sub & gt;穿过板的液态金属中的al<sub & gt;2 &爱尔蒂;/ sub & gt;o &爱尔蒂;sub & gt;3 &爱尔蒂;/ sub & gt;粒子/单晶al<sub & gt;2 &爱尔蒂;/ sub & gt;o &爱尔蒂;sub & gt;3 &爱尔蒂;/ sub & gt;对木板间的烧结面的当场观察

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-025

Masashi Nakamoto, Toshihiro Tanaka

{"title":"単結晶Al2O3板を通した液体金属中のAl2O3粒子／単結晶Al2O3板間の焼結界面のその場観察","authors":"Masashi Nakamoto, Toshihiro Tanaka","doi":"10.2355/tetsutohagane.tetsu-2023-025","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-025","url":null,"abstract":"In a continuous casting process, the clogging of the immersion nozzle with inclusions occurs as a result of the adhesion, agglomeration, and coalescence of inclusions. The most effective way to understand the behavior of inclusions, i.e. oxide particles, in a liquid steel is the in-situ observation. To our knowledge, however, there is no research on the in-situ observation of the behavior of oxide particles in a liquid steel. In the present work, therefore, the in-situ observation method for sintering interface between Al2O3 particle / single crystalline Al2O3 plate by laser microscope through single crystalline Al2O3 plate is proposed. First, the in-situ observation of sintering interface between Al2O3 particle and single crystalline Al2O3 in Ar atmosphere is conducted to verify the observation method for the interface through single crystalline Al2O3 plate. Then, the in-situ observation of sintering interface between Al2O3 particle and single crystalline Al2O3 in a liquid Ag is challenged. The observations for sintering interface between Al2O3 particle and single crystalline Al2O3 plate in Ar gas atmosphere and a liquid Ag are achieved by our proposed method. It is verified that the growth of sintering interface in liquid Ag is faster than that in an Ar gas atmosphere. This finding indicates that the non-wetting by liquid Ag of alumina particles promotes the growth of sintering interface in liquid Ag.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"40 4-5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161056","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 of Al Coordination Change in Alkaline-earth Aluminosilicate Glasses: An Application of Bond Valence Model 碱土铝硅酸盐玻璃中Al配位变化机理:键价模型的应用

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-056

Sohei Sukenaga, Koji Kanehashi, Hiroki Yamada, Koji Ohara, Toru Wakihara, Hiroyuki Shibata

引用次数: 0

Thermodynamic Analysis of Precipitation Behaviors in Hot-Rolled Ti-stabilized Interstitial-Free Steel Sheets 热轧无间隙钛稳定钢板析出行为的热力学分析

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-032

Michitoshi Saeki, Takako Yamashita

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深層学習と相変態モデルの融合による微細組織推定深度学习和相变态模型融合的微细组织推测

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-11-01 DOI: 10.2355/tetsutohagane.tetsu-2023-045

Satoshi Noguchi, Syuji Aihara, Junya Inoue

引用次数: 0

Changes in the Heterogeneous Deformation Structure and Texture with Cold Rolling Reduction in {110}<110> Oriented Coarse Grained 3% Silicon Steel {110}<110&gt冷轧压下非均质变形组织和织构的变化取向粗晶3%硅钢

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-2023-037

Tesshu Murakawa, Hiroshi Fujimura, Kenichi Murakami, Kohsaku Ushioda

{"title":"Changes in the Heterogeneous Deformation Structure and Texture with Cold Rolling Reduction in {110}<110> Oriented Coarse Grained 3% Silicon Steel","authors":"Tesshu Murakawa, Hiroshi Fujimura, Kenichi Murakami, Kohsaku Ushioda","doi":"10.2355/tetsutohagane.tetsu-2023-037","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-037","url":null,"abstract":"We systematically investigated changes in crystal orientation due to the cold rolling of a {110}<110> single crystal, which had not been researched to date, in a reduction range of 10–70%. The results allowed for a classification of the changes into the following three reduction cases. The first was a 10–20% reduction. For this reduction, there was almost no change in the matrix orientation, and a shear band slightly appeared near the surface layer. The second was a 30–50% reduction, at which many shear bands were introduced, and the crystal orientation inside the shear bands was rotated from the initial {110}<110> orientation to the {100}<001> orientation around the TD axis. There are cells in the shear band. And {100}<001> orientation cells are considered having lower strain than around cells to having lower GAM. Additionally, the {111}<211> orientation was also confirmed in a small area that was thought to be surrounded by shear bands. The third was a 60–70% reduction, at which the matrix rotated to {111}<110>, but there were some areas with a {111}<211> orientation. Furthermore, the shear bands increased with increasing reduction, and more inner orientations were observed for {111}<211> than for {100}<001>. {111}<211> bands and {100}<001> bands are considered different origins to change discontinuously.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"29 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":"135368430","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

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