Tetsu To Hagane-journal of The Iron and Steel Institute of Japan最新文献_第7页

フェライト-ベイナイト複相鋼の延性破壊挙動に及ぼす局所変形組織の影響局部变形组织对铁氧体-贝奈特双相钢的延性破坏行为的影响

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2023-066

Kyono Yasuda, Nobuyuki Ishikawa, Jin Sueyoshi, Tatsuya Morikawa, Masaki Tanaka, Kenji Higashida

{"title":"フェライト-ベイナイト複相鋼の延性破壊挙動に及ぼす局所変形組織の影響","authors":"Kyono Yasuda, Nobuyuki Ishikawa, Jin Sueyoshi, Tatsuya Morikawa, Masaki Tanaka, Kenji Higashida","doi":"10.2355/tetsutohagane.tetsu-2023-066","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-066","url":null,"abstract":"Microscopic deformation and fracture behavior of a ferrite-bainite dual phase steel was investigated by the micro-grid method and FE analysis to understand the inherent conditions of plastic instability and ductile fracture. The micro-grid method, which the microscopic strain is measured by the displacement of grids with 500 nm intervals drawn on the specimen surface, clearly revealed that the shear deformation along the lath structure in the bainite phase was seen before reaching the maximum loading point. Then, voids were observed in the ferrite phase adjacent to the ferrite/bainite boundary, where showing higher strain concentration. From the FE analysis with the model simulating actual ferrite-bainite microstructure, stress distribution was seen in the bainite phase, and high stressed regions could cause the shear deformation of the bainite phase. The local shear deformation in the bainite phase decreased strain hardenability and triggered the macroscopic plastic instability. It is considered that the macroscopic plastic instability accelerates the strain localization, and promotes the void nucleation and growth. Ductile fracture path was also visualized by the micro-grids in the ferrite phase along the shear deformation bands which is connecting the high strain regions. Development of shear deformation bands inside the ferrite phase was well simulated with the FE analysis, same as the development of high stressed region in the bainite phase in the early stage. It can be stated, therefore, that plastic instability and ductile fracture of dual phase steel is a structure dependent phenomenon which is strongly controlled by the morphologies of each constituent phases.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136008836","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

Microscopic Study of Surface Hardening by Grit Blasting on Hot Rolled Low Carbon Steel (SPHC) 热轧低碳钢(SPHC)喷砂表面硬化的微观研究

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-123

Atsuhiro Itoh, K. Kamada, M. Imafuku

引用次数: 0

Review of Oxide Scale in Hot-rolling Process 热轧过程中氧化皮研究进展

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-085

Yasumitsu Kondo

引用次数: 0

Growth Mechanism of Fe2Al5 Phase during Aluminizing Process Using a Marker Experiment 镀铝过程中Fe2Al5相生长机理的标记实验

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-127

K. Shinozuka, H. Esaka

引用次数: 0

Defect Formation in Aluminum-coated Steel by Heat Treatment 镀铝钢热处理缺陷的形成

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-050

Y. Morizono, T. Yamamuro, S. Tsurekawa

引用次数: 0

Change in Concentration of Boron Segregated on Austenite Grain Boundary after Hot Deformation and during Recrystallization in Low Carbon Steels 低碳钢热变形和再结晶过程中奥氏体晶界上偏析硼浓度的变化

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-087

D. Terazawa, Y. Shimada, K. Ishikawa, Tetsuya Namegawa, M. Fujioka, M. Hoshino

引用次数: 0

微小部XRDによる湾曲試料のX線ラインプロファイル解析の適用限界利用微部XRD对弯曲样品进行X射线曲线分析的应用极限

IF 0.3 4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2022-109

Atsuhiro Itoh, M. Imafuku

引用次数: 0

酸化鉄含有スラグの溶融還元に伴う発生気泡の気泡径分布および発生位置の測定氧化铁含渣熔融还原产生气泡的气泡直径分布及产生位置的测定

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2023-093

Ko-ichiro Ohno, Taiga Eguchi, Tatsuya Kon

{"title":"酸化鉄含有スラグの溶融還元に伴う発生気泡の気泡径分布および発生位置の測定","authors":"Ko-ichiro Ohno, Taiga Eguchi, Tatsuya Kon","doi":"10.2355/tetsutohagane.tetsu-2023-093","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-093","url":null,"abstract":"Slag foaming is a phenomenon caused by the generation of CO bubbles due to the reaction between iron oxide in slag and carbon in pig iron. The purpose of this study is to explore the controlling factors of slag foaming by observing the bubble formation behavior caused by the chemical reaction between iron oxide and Fe-C alloy in slag. 0.06 g of Fe-C alloy was charged to the bottom of the BN crucible, and 6.0 g of slag (SiO2:CaO:Fe2O3 = 40:40:30) was charged on top of it. The crucible was placed in an infrared image heating furnace, and the temperature was rapidly raised to 1370°C at a rate of 1000°C/min in a N2 stream, then held for a predetermined time and rapidly cooled. After rapidly cooling, the internal structure of the sample was observed using a high-resolution X-ray CT device. The spherical equivalent volume is calculated based on the number of bubbles observed and their equivalent circle diameter, and the relationship between the volume ratio of small bubbles in the slag volume and the distance from the bottom of the crucible is calculated, and the bubble density and volume ratio are calculated. It was suggested that the value tends to increase as the distance from the bottom of the crucible increases.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"295 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448634","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

オーステナイト系ステンレス鋼における結晶粒微細化強化の炭素および窒素濃度依存性奥氏体不锈钢中晶粒精细化强化对碳和氮浓度的依赖性

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2023-072

Yoshihiro Oka, Ayumi Morimatsu, Takuro Masumura, Takahito Ohmura, Toshihiro Tsuchiyama

{"title":"オーステナイト系ステンレス鋼における結晶粒微細化強化の炭素および窒素濃度依存性","authors":"Yoshihiro Oka, Ayumi Morimatsu, Takuro Masumura, Takahito Ohmura, Toshihiro Tsuchiyama","doi":"10.2355/tetsutohagane.tetsu-2023-072","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-072","url":null,"abstract":"The effects of C and N on solid solution strengthening and grain refinement strengthening were quantitatively evaluated using various austenitic stainless steels in which C and N were added independently to Fe-18 mass%Cr-12 mass%Ni alloys. As a result of evaluating the amount of solid solution strengthening from the intercept value in the Hall-Petch relationship, it was confirmed that N has a stronger solid solution strengthening capacity than C. On the other hand, the addition of C and N increased the slope of the Hall-Petch relationship, the so-called Hall-Petch coefficient, and the amount of grain refinement strengthening increased. Comparing the effects of C and N, there was no significant difference in the effect of increasing the Hall-Petch coefficient between the two elements at the same amount of addition. The critical grain boundary shear stress measured by nanoindentation tests and the Hall-Petch coefficient corresponded well for both steels, demonstrating that the increase in critical shear stress due to the addition of C and N results in increased grain refinement strengthening. However, the amount of grain boundary segregation was calculated to be considerably higher for C than for N, suggesting that N is more effective than C in increasing the critical grain boundary shear stress.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135158820","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

局所ひずみに基づく繰返し軟化特性の異なる構造用鋼の疲労亀裂発生・伝播特性評価基于局部形变的重复软化特性的不同结构用钢的疲劳龟裂发生和传播特性评价

4区材料科学

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2023-01-01 DOI: 10.2355/tetsutohagane.tetsu-2023-088

Takayuki Yonezawa, Pengjun Luo, Seiichiro Tsutsumi

{"title":"局所ひずみに基づく繰返し軟化特性の異なる構造用鋼の疲労亀裂発生・伝播特性評価","authors":"Takayuki Yonezawa, Pengjun Luo, Seiichiro Tsutsumi","doi":"10.2355/tetsutohagane.tetsu-2023-088","DOIUrl":"https://doi.org/10.2355/tetsutohagane.tetsu-2023-088","url":null,"abstract":"In this paper, fatigue crack initiation and propagation properties of three structural steels with different static strength and cyclic softening behavior were evaluated and compared with the estimation results based on the local strain response. Steel C had the highest cyclic softening rate, which was 10 times that of steel A and twice that of steel B. The relationship between strain range and fatigue life in the fatigue life region shorter than 105 cycles was almost the same regardless of the test steels. The fatigue crack initiation life from the notch bottom of the SENT specimen was almost the same independent of static strength and cyclic softening rate. The crack initiation life estimated from the Strain range versus fatigue life equation using the local strain response measured by DIC was roughly in agreement with the experimental results. Steel C had the highest crack opening load and the slowest fatigue crack propagation rate compared to the other two steels. The local strain range at the fatigue crack tip showed a good correlation with the fatigue crack propagation rate irrespective of the steel grade. In addition, the estimates of fatigue crack propagation rate based on the local strain response were in almost agreement with the experimental results.","PeriodicalId":22340,"journal":{"name":"Tetsu To Hagane-journal of The Iron and Steel Institute of Japan","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135448632","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