steel research international最新文献_第2页

Delving Deep into the Influence of Pressure on Columnar-to-Equiaxed Transition in High-Nitrogen Steel Ingot by Thermodynamics and Kinetics

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-25 DOI: 10.1002/srin.202400533

Zhuo-Wen Ni, Hong-Chun Zhu, Hua-Bing Li, Zhi-Yu He, Hao Feng, Shu-Cai Zhang, Peng-Chong Lu, Hai-Jian Wang, Zhou-Hua Jiang

{"title":"Delving Deep into the Influence of Pressure on Columnar-to-Equiaxed Transition in High-Nitrogen Steel Ingot by Thermodynamics and Kinetics","authors":"Zhuo-Wen Ni, Hong-Chun Zhu, Hua-Bing Li, Zhi-Yu He, Hao Feng, Shu-Cai Zhang, Peng-Chong Lu, Hai-Jian Wang, Zhou-Hua Jiang","doi":"10.1002/srin.202400533","DOIUrl":"https://doi.org/10.1002/srin.202400533","url":null,"abstract":"Based on the analysis of thermodynamic driving force and solidification kinetics under pressure, the influence mechanism of solidification pressure on columnar-to-equiaxed transition (CET) of high-nitrogen steel is clarified. It is observed that increasing the solidification pressure from 0.5 to 2 MPa results in a shift of the CET positions toward the center. This is attributed to the fact that higher solidification pressure can promote the growth of columnar dendrites by increasing the solidification rate, temperature gradient, and cooling rate. Meanwhile, increasing the solidification pressure shortens the length of the diffusion zone ahead of the advancing columnar front and reduces the supercooling. As a result, it becomes more difficult for equiaxed dendrites to nucleate ahead of the advancing columnar front, leading to CET positions closer to the center. This indicates that the main influencing factor for the change in CET caused by changing solidification pressure is solidification kinetics, that is, changes in the nucleation and growth environment of equiaxed dendrites, while thermodynamic driving forces are not the primary factor causing CET position changes.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of Rare Earth Ce on Structure and Properties in 7CrSiMnMoV Die Steel Castings

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-24 DOI: 10.1002/srin.202400631

Qian Long, Zongbo Li, Jie Zeng, Xu Gao, Wanlin Wang, Yan Feng

{"title":"Effect of Rare Earth Ce on Structure and Properties in 7CrSiMnMoV Die Steel Castings","authors":"Qian Long, Zongbo Li, Jie Zeng, Xu Gao, Wanlin Wang, Yan Feng","doi":"10.1002/srin.202400631","DOIUrl":"https://doi.org/10.1002/srin.202400631","url":null,"abstract":"In this study, rare earth (RE) Ce is used to modify the interaction between atoms in 7CrSiMnMoV die steel castings. The tensile properties are performed, and strengthening mechanism are analyzed by investigated fracture surface, and microstructure by optical microscopy (OM) and scanning electron microscope-energy dispersive spectrometer (SEM-EDS). And ab initio molecular dynamics (AIMD) is used to simulate the effect of the Ce element on the local atomic structure of the FeCeC system alloy steel. The results indicate the strength can increase from 722.55 to 1074.27 MPa, and the elongation can increase from 24.86% to 44.22% with a RE Ce concentration of 0.009%. It is attributed to that doping of Ce can inhibit the formation of network eutectic cementite, refine the lamellar spacing of pearlite, and even form granular cementite and martensite structures. AIMD simulation results show that C atoms tend to be surrounded by Fe, and the strong chemical bonds of FeC make the Fe-centered C more stable with an increase in RE Ce concentration. And doping Ce can introduce new local topological and chemical orderings such that the FeCFe triplets predominantly form small and big angles shifting from near 75° and 136° to 47° and 81°, respectively.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Kinetics of Oxidation of an Al2O3–SiC–C-Based Blast Furnace Trough Refractory in Air

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-23 DOI: 10.1002/srin.202400390

Jayaprabhu Karthikeyan, Rahul Sarkar

{"title":"Kinetics of Oxidation of an Al2O3–SiC–C-Based Blast Furnace Trough Refractory in Air","authors":"Jayaprabhu Karthikeyan, Rahul Sarkar","doi":"10.1002/srin.202400390","DOIUrl":"https://doi.org/10.1002/srin.202400390","url":null,"abstract":"During tapping of liquid hot-metal from the blast-furnace, the blast-furnace main trough gets exposed to air and the blast-furnace-trough refractory becomes prone to oxidation. In this work, isothermal oxidation kinetics of an Al2O3–SiC–C-based BFT (Blast-Furnace-Trough) refractory castable using a high-temperature vertical tubular furnace equipped with a microbalance is investigated. Herein, it is observed that up to about 800 °C, carbon only oxidizes, resulting in weight loss in the refractory. Around 900 °C, SiC also starts to oxidize via the passive-oxidation mechanism, leading to the formation of a mullite phase as a result of the reaction between SiO2 generated via passive oxidation and Al2O3 already present in the refractory. This causes a volume expansion and weight gain, both having a beneficial effect on the refractory performance, which is further validated from apparent porosity measurements. Thus, above 900 °C, simultaneous oxidation of C and passive oxidation of SiC occurs, which eventually stabilizes the weight of the refractory. Around 1100 °C, the oxidation process of the refractory is practically complete, with no further increase in the oxidation rate beyond 1100 °C. The activation energy for the oxidation process is obtained as 37.2 ± 5 kJ mol−1 in the temperature range 600–1150 °C.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Microstructural Evolution and High-Temperature Tensile Properties of 15Cr-Reduced Activation Ferritic Steel Processed by Hot Powder Forging of Mechanically Alloyed Powders

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-21 DOI: 10.1002/srin.202400546

Himanshu Pal, Vikram V. Dabhade

{"title":"Microstructural Evolution and High-Temperature Tensile Properties of 15Cr-Reduced Activation Ferritic Steel Processed by Hot Powder Forging of Mechanically Alloyed Powders","authors":"Himanshu Pal, Vikram V. Dabhade","doi":"10.1002/srin.202400546","DOIUrl":"https://doi.org/10.1002/srin.202400546","url":null,"abstract":"Reduced activation ferritic steels are being explored as possible cladding tube materials for nuclear reactors because of their low activation and excellent irradiation resistance. In the current investigation, reduced activation ferritic steel (Fe–15Cr–2W) is processed by mechanical alloying of elemental powders followed by hot powder forging. Mechanical alloying is carried out in a Simoloyer attritor mill (Zoz GmbH), after which the powders are placed in a mild steel can and forged at 1200 °C in H2 atmosphere. X-ray diffraction and transmission electron microscopy (TEM) investigation reveal that 10 h of mechanical alloying is required to achieve complete dissolution of Cr and W in the Fe matrix powder. The relative density and hardness distribution of the forged slab is evaluated in longitudinal as well as transverse direction to optimize the powder forging operation. Electron backscatter diffraction analysis showed dynamic recrystallization to take place during the course of hot powder forging. Tensile tests are performed at room temperature as well as at elevated temperatures (600 and 700 °C). The yield strength and ultimate tensile strength at room temperature as well as at elevated temperatures are found to be higher than those reported in literature for reduced activation ferritic steels consolidated by other techniques.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Control of Instantaneous Abnormal Mold Level Fluctuation in Slab Continuous Casting Mold Based on Bidirectional Long Short-Term Memory Model 基于双向长短期记忆模型的板坯连铸模瞬时异常模位波动控制

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-21 DOI: 10.1002/srin.202400656

Xiaoliang Meng, Sen Luo, Yelian Zhou, Weiling Wang, Miaoyong Zhu

{"title":"Control of Instantaneous Abnormal Mold Level Fluctuation in Slab Continuous Casting Mold Based on Bidirectional Long Short-Term Memory Model","authors":"Xiaoliang Meng, Sen Luo, Yelian Zhou, Weiling Wang, Miaoyong Zhu","doi":"10.1002/srin.202400656","DOIUrl":"https://doi.org/10.1002/srin.202400656","url":null,"abstract":"The instantaneous abnormal mold level fluctuation (IAMLF) has significant harmful effects on slab quality. This article proposes a prediction and control method for IAMLF. First, the data processed by difference method is used for the IAMLF prediction and stopper-rod position prediction. Then, the bidirectional long short-term memory (BI-LSTM) is introduced to predict the IAMLF; the corresponding stopper-rod position is predicted according to the mold level prediction result. BI-LSTM can predict the IAMLF with the mean absolute error of 1.52 mm and the false alarm rate of 1.8%, and also performs well in predicting the stopper-rod position with a mean absolute error of only 1.92 mm. Furthermore, the two prediction models are combined to form a closed loop, where the mold level fluctuation is predicted according to the industrial data processed by data difference method, and the stopper-rod position is adjusted in advance to eliminate IAMLF. Finally, the fuzzy proportional-integral-derivative (PID) controller is used to control mold level based on the mold level and stopper-rod position prediction results. The prediction accuracy of IAMLF reaches 98.4%, and the present proposed fuzzy PID controller can effectively prevent the occurrence of IAMLF with a success rate of 95.6%.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Quasi-Static and Dynamic Deformation Behavior of Medium Manganese Automotive Steel under Interrupted Tension

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-17 DOI: 10.1002/srin.202400426

Yi Feng, Yongyong Jia, Zhengyan Ying, Shuaijun Li, Deliang Zhang, Zhihui Cai, Guangjie Huang

{"title":"Quasi-Static and Dynamic Deformation Behavior of Medium Manganese Automotive Steel under Interrupted Tension","authors":"Yi Feng, Yongyong Jia, Zhengyan Ying, Shuaijun Li, Deliang Zhang, Zhihui Cai, Guangjie Huang","doi":"10.1002/srin.202400426","DOIUrl":"https://doi.org/10.1002/srin.202400426","url":null,"abstract":"This work investigates the mechanical properties of medium manganese automotive steel across a strain rate range from 2 × 10−4 to 200 s−1. The results indicate that the tensile strength is the lowest at a low strain rate (0.0002 s−1), primarily due to the high mechanical stability of austenite, which results in low work-hardening ability during deformation. As the strain rate increases, the softening effect because of temperature rise, and the dislocation density increase. Consequently, the deformation mechanism is transitioned from the transformation induced plasticity (TRIP) effect (ε < 2 × 10−2 s−1) to the co-occurrence TRIP and twinning induced plasticity effect (ε ≥ 2 × 10−2 s−1). Furthermore, in the initial stages of dynamic deformation (ε < 0.1), the same work-hardening phenomenon occurs under the influence of geometrically necessary dislocations as in quasi-static deformation. However, in the later stages of dynamic deformation (ε > 0.25), the weakening of the copper texture density occurs due to an increase in stacking fault energy within the austenite.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Study on Transformation of Glassy and Crystalline Inclusions in Cord Steel during Heat Treatment at 1100 °C

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-17 DOI: 10.1002/srin.202400568

Xubo Lei, Jianli Li, Qiang Zeng, Yue Yu, Hangyu Zhu

{"title":"Study on Transformation of Glassy and Crystalline Inclusions in Cord Steel during Heat Treatment at 1100 °C","authors":"Xubo Lei, Jianli Li, Qiang Zeng, Yue Yu, Hangyu Zhu","doi":"10.1002/srin.202400568","DOIUrl":"https://doi.org/10.1002/srin.202400568","url":null,"abstract":"To clarify the transformation of the glassy and crystalline inclusions in cord steel during heat treatment, four groups of MnO–SiO2–Al2O3 systems with different MgO contents are designed to obtain samples with both glassy and crystalline inclusions by slow-cooling, and then the samples are isothermal held at 1100 °C for 120 min. The results of X-ray diffraction and scanning electron microscope and energy dispersive spectrometer indicate that after isothermal holding, the MgMnSiO4 crystalline phase transforms into MgAl2O4 and MnSiO3 phases in 5 wt% MgO system, while partial MgMnSiO4 phase transforms into MgSiO3 phase in 10 wt% MgO system. Besides, the MgMnSiO4 crystalline phase transforms into MgSiO3 and Mg2SiO4 phases in 15 wt% MgO system, while the Mg2SiO4 crystalline phase partially transforms into MgSiO3 phase in 20 wt% MgO system. Combined with the calculation results of FactSage 8.1, it shows that the higher the MgO content in the system, the stronger the crystallization ability and the easier the formation of the crystalline phase. During the isothermal holding process, the elements in inclusions continuously diffuse and migrate, so that the glassy phase transforms into crystalline phase, while the crystalline phase grows further and the internal glassy phase disappear, accompanied by the transformation of the crystal type.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dissolution of Primary Carbides and Formation and Healing of Kirkendall Voids in Bearing Steel under Pulsed Electric Current

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-16 DOI: 10.1002/srin.202400400

Zhongxue Wang, Tao Zhang, Mengcheng Zhou, Mingkui Zhang, Jinchao Ma, Xinfang Zhang, Jingdong Guo, Jide Liu, Yizhou Zhou

{"title":"Dissolution of Primary Carbides and Formation and Healing of Kirkendall Voids in Bearing Steel under Pulsed Electric Current","authors":"Zhongxue Wang, Tao Zhang, Mengcheng Zhou, Mingkui Zhang, Jinchao Ma, Xinfang Zhang, Jingdong Guo, Jide Liu, Yizhou Zhou","doi":"10.1002/srin.202400400","DOIUrl":"https://doi.org/10.1002/srin.202400400","url":null,"abstract":"The alloying elements in 8Cr4Mo4V bearing steel tend to form large primary carbides with carbon, which not only causes element segregation but also becomes the primary source of fatigue crack initiation, thereby decreasing the material's usability and machinability. Owing to the excellent thermal stability of primary carbides, traditional homogenization annealing requires high temperatures, which is both time- and energy-intensive. Excessively high heat treatment temperatures can also result in “overburning” of the sample. Herein, primary carbides are rapidly dissolved at low temperatures using pulsed electric current treatment. The additional free energy introduced by the pulsed electric current lowers the thermodynamic barrier for carbide dissolution. During the second-phase dissolution process, the unbalanced diffusion of elements may cause the formation of Kirkendall voids. Due to the difference in electrical conductivity between the voids and the matrix, the pulsed electric current generates thermal compressive stress on the voids, promoting rapid atom migration to these voids and accelerating their healing. This pulse-current treatment technology offers a novel method for the rapid dissolution of carbides in alloys at low temperatures and for the rapid healing of related voids.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Optimization of Hydrogen Utilization and Process Efficiency in the Direct Reduction of Iron Oxide Pellets: A Comprehensive Analysis of Processing Parameters and Pellet Composition

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-15 DOI: 10.1002/srin.202400565

Angelo Perrone, Pasquale Cavaliere, Behzad Sadeghi, Leandro Dijon, Aleksandra Laska

{"title":"Optimization of Hydrogen Utilization and Process Efficiency in the Direct Reduction of Iron Oxide Pellets: A Comprehensive Analysis of Processing Parameters and Pellet Composition","authors":"Angelo Perrone, Pasquale Cavaliere, Behzad Sadeghi, Leandro Dijon, Aleksandra Laska","doi":"10.1002/srin.202400565","DOIUrl":"https://doi.org/10.1002/srin.202400565","url":null,"abstract":"The article deals with the H2 consumption for different processing conditions and the composition of the processed pellets during the direct reduction process. The experiments are carried out at 600–1300 °C, with gas pressures of 1–5 bar, gas flow rates of 1–5 L min−1, and basicity indices of 0 to 2.15. Pellets with different compositions of TiO2, Al2O3, CaO, and SiO2 are analyzed. The gas flow rate is crucial, with 0–10 L min−1 leading to an H2 consumption of 0–5.1 kg H2/kg pellet. The gas pressure (0–10 bar) increases the H2 consumption from 0 to 5.1 kg H2/kg pellet. Higher temperatures (600–1300 °C) reduce H2 consumption from 5.1 to 0 kg H2/kg pellet, most efficiently at 950–1050 °C, where it decreases from 0.22 to 0.10 kg H2/kg pellet. An increase in TiO2 content from 0% to 0.92% lowers H2 consumption from 0.22 to 0.10 kg H2/kg pellet, while a higher Fe content (61–67.5%) also reduces it. An increase in SiO2 content from 0% to 3% increases H2 consumption from 0 to 5.1 kg H2/kg pellet. Porosity structure influences H2 consumption, with the average pore size decreasing from 2.83 to 0.436 mm with increasing TiO2 content, suggesting that micropores increase H2 consumption and macropores decrease it.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/srin.202400565","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precipitation Refinement via Aging Time Modification for Enhancing Wear Resistance in Ti–V–Nb Microalloyed High-Manganese Steels

IF 1.9 3区材料科学

steel research international Pub Date : 2024-10-14 DOI: 10.1002/srin.202400397

Hongli Cao, Xin Chen, Delei Mu, Tongtao Wei, Hongxing Guo, Sida Chen, Xiaomin Huang, Zulai Li, Quan Shan

{"title":"Precipitation Refinement via Aging Time Modification for Enhancing Wear Resistance in Ti–V–Nb Microalloyed High-Manganese Steels","authors":"Hongli Cao, Xin Chen, Delei Mu, Tongtao Wei, Hongxing Guo, Sida Chen, Xiaomin Huang, Zulai Li, Quan Shan","doi":"10.1002/srin.202400397","DOIUrl":"https://doi.org/10.1002/srin.202400397","url":null,"abstract":"It is imperative to ensure an even distribution of refined precipitates to enhance wear resistance. Herein, different heat treatments are to control the size and distribution of precipitates. The treatments include water quenching at 1100 °C followed by aging at 400 °C for 24, 60, and 84 h, designated as AT24, AT60, and AT84, respectively. The microstructure, mechanical properties, and impact wear properties of high-manganese steel are investigated under solution and aging conditions using scanning electron microscopy, field-emission scanning electron microscopy, tensile testing, and impact abrasive wear testing. Notably, the absence of nanoscale precipitates largely accounts for the poor wear resistance of as-casting steel, whereas the strengthening effect of larger micrometer-sized precipitates is insufficient. After the solution and aging treatment, nanosized precipitates continuously form within the matrix, conducive to the formation of the deeper work-hardening layer, thereby improving the wear resistance. The fine micrometer-sized precipitates and evenly distributed nanoscale precipitates in AT60 actively contribute to toughness. Additionally, these precipitates interact with slip dislocations, providing stronger strengthening via the Orowan looping mechanism. The wear mechanisms of steel can be transformed from wide, deep pits to shallow grooves and microcutting by extending the aging time.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":"96 2","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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