International Journal of Metalcasting最新文献_第7页

Effect of Ageing Temperature on the Hardness, Microstructural and Dry Sliding Wear Performance of the Functionally Graded A356 Alloy 时效温度对功能分级 A356 合金的硬度、微观结构和干滑磨损性能的影响

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-18 DOI: 10.1007/s40962-024-01370-0

S. Prathap Singh, D. Ananthapadmanaban, N. Venkateshwaran, M. A. Sai Balaji

{"title":"Effect of Ageing Temperature on the Hardness, Microstructural and Dry Sliding Wear Performance of the Functionally Graded A356 Alloy","authors":"S. Prathap Singh, D. Ananthapadmanaban, N. Venkateshwaran, M. A. Sai Balaji","doi":"10.1007/s40962-024-01370-0","DOIUrl":"https://doi.org/10.1007/s40962-024-01370-0","url":null,"abstract":"The present investigation aims to fabricate functionally graded aluminium alloy A356 processed through stir casting followed by vertical centrifugal casting. The hardness was examined using a Vickers’s microhardness tester, and the microstructure was examined through an optical microscope (OM), high-resolution scanning electron microscope (HRSEM), and X-ray diffraction (XRD) instrument. The dry sliding wear behaviour was examined using a pin-on-disc tribometer to study the influence of ageing temperatures (145, 165, and 185 °C), various zones (outer, middle, and inner) and applied load (10, 20, and 30N) on the specific wear rate (SWR) and coefficient of friction (COF). The sample aged at 165 °C had a 50% higher maximum hardness in the higher hardness zone than the as-cast FG aluminium alloy. Taguchi's technique and analysis of variance (ANOVA) determined the best and most significant sliding wear variables. The lowest SWR and COF of 0.00100 mm3/Nm and 0.382 were identified at the 165 °C aged higher hardness zone with a load of 10 N, and ANOVA analysis revealed that the applied load had a major impact. The worn surface examination confirmed the minimal wear damages in the higher hardness zone with an abrasive wear mechanism. The wear debris examination confirmed the oxide layer formation due to the tribochemical reactions.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"42 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141063425","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

Performance of a Water-Soluble Ceramic Core and Its Application in Aluminum Casting 水溶性陶瓷芯的性能及其在铝铸造中的应用

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-18 DOI: 10.1007/s40962-024-01354-0

Wan Bai, Tianbo Zhang, Bao Yue, Deyu Gu, Lili Cui, Yuwen Qiu, Yingsheng Dong

{"title":"Performance of a Water-Soluble Ceramic Core and Its Application in Aluminum Casting","authors":"Wan Bai, Tianbo Zhang, Bao Yue, Deyu Gu, Lili Cui, Yuwen Qiu, Yingsheng Dong","doi":"10.1007/s40962-024-01354-0","DOIUrl":"https://doi.org/10.1007/s40962-024-01354-0","url":null,"abstract":"When an aluminum investment casting with a complex internal cavity or deep pore is fabricated, a core that can be dissolved and collapsed in water is needed. In this paper, a water-soluble ceramic core with fused corundum powder as refractory material and K2SO4 as binder was prepared. The results show that as the content of K2SO4 increases, the bending strength, porosity, and shrinkage of the core decreases, but the solubility of the core improves. The K2SO4 will decompose and react with Al2O3, resulting in the low-soluble KAlO2 produced. The solubility of ceramic cores is affected by the porosity, the reacting product, and the residual salt. When the amount of binder is 30 wt.%, the core possesses the best comprehensive properties. In three conditions: hot water at 80 °C, ultrasonic vibration, and mechanical stirring assistance processes, the core has the fastest dissolution rate with ultrasonic assistance. An S-shaped core embedded in aluminum casting was fabricated, and the core was removed completely in water with ultrasonic assistance. The pore surface of the casting was bright and clean, which means that the water-soluble ceramic core prepared in this paper was expected to be used to produce the aluminum alloy casting with complex inner cavities.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"48 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141063382","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

PM and Rheocasting in Ductile Iron Castings 球墨铸铁铸件中的 PM 和流变铸造

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-12 DOI: 10.1007/s40962-024-01300-0

Haruki Itofuji, Kazuya Edane, T. Sakatani, Natsuki Utagawa, Masayuki Itamura

引用次数: 0

Effect of Er Addition and Solution Treatment on the Microstructure and Mechanical Properties of Hypoeutectic Al–10%Mg2Si–3.5%Cu Alloy 添加铒和固溶处理对超共晶 Al-10%Mg2Si-3.5%Cu 合金微观结构和力学性能的影响

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-12 DOI: 10.1007/s40962-024-01346-0

Xiaofeng Wu, Fufa Wu, Rongda Zhao

{"title":"Effect of Er Addition and Solution Treatment on the Microstructure and Mechanical Properties of Hypoeutectic Al–10%Mg2Si–3.5%Cu Alloy","authors":"Xiaofeng Wu, Fufa Wu, Rongda Zhao","doi":"10.1007/s40962-024-01346-0","DOIUrl":"https://doi.org/10.1007/s40962-024-01346-0","url":null,"abstract":"The effects of Er addition and solution treatment on the microstructure characteristics, tensile properties, and fracture behavior of a hypoeutectic Al–10%Mg2Si–3.5%Cu alloy were systematically studied. The results showed that the addition of 0.45 wt% Er to hypoeutectic Al–10Mg2Si alloy without and with the addition of 3.5 wt% Cu can significantly reduce the grain sizes of the eutectic Mg2Si phase and α-Al/Mg2Si eutectic cell, and transform the morphology of the eutectic Mg2Si from coarse Chinese characters to thin stripes, dots, and fibers. The modification of eutectic Mg2Si is attributed to the inhibition of Er on the heterogeneous nucleation of AlP by forming Er, P-containing phases, and the enrichment of Er atoms around eutectic Mg2Si, which inhibits the growth of eutectic Mg2Si and promotes a change in its growth direction. The solid solution treatment causes the eutectic Mg2Si to tend towards spheroidization, which is promoted by the addition of Er. The addition of 0.45 wt% Er simultaneously improves the strength and plasticity of the cast alloys without and with the addition of 3.5 wt% Cu. The solid solution treatment further improved the tensile properties of the studied alloys. The improvement in strength of the alloy after as-cast and T6 treatment is due to the obstruction of fine eutectic Mg2Si and containing-Er/Cu intermetallic compound particles on dislocations, while the improvement of plasticity mainly lies in the reduction of stress concentration and stress uniformity around eutectic Mg2Si and intermetallic compounds caused by the regularity and spheroidization of their morphology.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"1 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930512","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

The Influence of TiB2 Particles on the Artificial Aging Behavior of TiB2/Al–5Cu Composite TiB2 颗粒对 TiB2/Al-5Cu 复合材料人工老化行为的影响

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-11 DOI: 10.1007/s40962-024-01316-6

Yiwang Jia, Xiaojuan Shang, YunChe, Zhengcai Liu, Qibin Liu, Renguo Zhang, Sanquan Men, Xiang Li, Yongxiang Li

{"title":"The Influence of TiB2 Particles on the Artificial Aging Behavior of TiB2/Al–5Cu Composite","authors":"Yiwang Jia, Xiaojuan Shang, YunChe, Zhengcai Liu, Qibin Liu, Renguo Zhang, Sanquan Men, Xiang Li, Yongxiang Li","doi":"10.1007/s40962-024-01316-6","DOIUrl":"https://doi.org/10.1007/s40962-024-01316-6","url":null,"abstract":"This study investigated the artificial aging process of TiB2/Al–5Cu composite, with a focus on the influence of TiB2 particles on the precipitation behavior of the composite. Additionally, a comparative analysis of the microhardness and tensile properties between the TiB2/Al–5Cu composite and the Al–5Cu alloy was conducted. X-ray Diffraction (XRD) analysis reveals that the TiB2/Al–5Cu composite consists of TiB2 and Al2Cu phases. The Scanning Electron Microscopy (SEM) imagery demonstrates a predominantly cellular crystal composition in the composite. Notably, as the aging time progresses, there’s an initial increase followed by a subsequent decrease in the gray grain boundaries of the composite. Transmission Electron Microscopy (TEM) images uncover the presence of needle-like θ phase, TiB2, and dislocations within the TiB2/Al–5Cu composite. The incorporation of TiB2 particles has emerged as a pivotal factor in significantly curtailing the artificial aging duration. With the peak hardness aging time determined at a mere 8 h, the TiB2/Al–5Cu composite showcases substantially higher hardness levels compared to the Al–5Cu base alloy. Remarkably, the optimum aging time for achieving the best mechanical properties in the composites is reduced from 20 to 8 h. Directly comparing the TiB2/Al–5Cu composite to the Al–5Cu alloy under peak aging conditions, notable enhancements in both yield strength (22%) and tensile strength (41%) are observed. Additionally, a slight increase in elongation is observed in the TiB2/Al–5Cu composite.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"43 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930639","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

Simulation and Experimental Investigation of a Combined Control Method for Stray Grain During Single Crystal Blade Solidification 单晶叶片凝固过程中杂散晶粒组合控制方法的模拟与实验研究

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-11 DOI: 10.1007/s40962-024-01357-x

Haoyu Zhao, Kun Bu, Binqiang Wang, Sheng Mou, Pengguo Duan

{"title":"Simulation and Experimental Investigation of a Combined Control Method for Stray Grain During Single Crystal Blade Solidification","authors":"Haoyu Zhao, Kun Bu, Binqiang Wang, Sheng Mou, Pengguo Duan","doi":"10.1007/s40962-024-01357-x","DOIUrl":"https://doi.org/10.1007/s40962-024-01357-x","url":null,"abstract":"It is of great significance to effectively prevent the stray grain defect at the edge plate of nickel-based superalloy single crystal blades. In this study, the evolution of the mushy zone and the growth of grain adjacent to the edge plate was first simulated by the temperature field and cellular automaton-finite element (CAFÉ) model, combined with a single crystal blade solidification experiment; it was proved that modifying the withdrawal rate alone was insufficient to prevent the stray grain formation. Then, the formation reason of the heat barrier zone and the irregular distribution pattern of the mold shell thickness were revealed by quantifying the present mold shell thickness near the edge plate through an industrial conical beam computed tomography. Based on these results, a combined control method for stray grain was proposed, which involves the use of precise measures such as non-uniform mold design, exact addition of process bars, and variable withdrawal rate. Simulation analysis demonstrated that this method can substantially reduce the undercooling range and average undercooling at the edge plate by 45.5% and 31.6%, respectively, and then eliminate the isolated undercooling zone. The macrostructure and microstructure of the blade cast by this method verified the effectiveness in inhibiting stray grain, and it will be a promising approach to manufacturing single crystal blades.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"64 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930430","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

Three-Dimensional Micromechanical Modelling of Deformation Behaviour of Rheocast A356 Alloy 流变铸造 A356 合金变形行为的三维微观力学建模

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-10 DOI: 10.1007/s40962-024-01342-4

Durgesh Kumar Pandey, Prosenjit Das

{"title":"Three-Dimensional Micromechanical Modelling of Deformation Behaviour of Rheocast A356 Alloy","authors":"Durgesh Kumar Pandey, Prosenjit Das","doi":"10.1007/s40962-024-01342-4","DOIUrl":"https://doi.org/10.1007/s40962-024-01342-4","url":null,"abstract":"In this study, a micromechanical approach is used to investigate the deformation behaviour of rheocast Al–7Si–0.3Mg alloy. The alloy is rheocast using a cooling slope (at 45° and 60° angles) after melt treatment with a grain refiner addition (0.15% by weight Al–5Ti–1B master alloy). The comparison is made with the conventionally cast sample of the same alloy. Microscale instability of the rheocast alloy occurring at the onset of deformation, due to the strain incompatibility between the primary and eutectic phases, causes stress and strain localization as well as a triaxial state of stress, which subsequently governs void initiation and growth in the said alloy. A commercial finite element (FE) code ABAQUS is used to simulate microscale deformation behaviour of the three-dimensional representative volume elements (RVE) of approximated and as well as actual microstructure of the said alloy under uniaxial tensile loading. Although, globally uniaxial tensile loading is applied over the RVEs, however, stress triaxiality causes local variation of stress state, as evident from biaxial tensile stress state observed at grain boundaries of the above-mentioned RVEs, whereas uniaxial tensile stress is observed at the central location of these RVEs. Simulation results reveal that the macroscale deformation behaviour of the said alloy is determined by its microscopic features such as shape, size, distribution (spread of primary Al grains within the volume element) and volume fraction of primary Al grains. Moreover, distribution as well as volume fraction of eutectic Si also plays deciding role in deformation behaviour of the alloy. The FE model predictions of improved deformation behaviour/stress distribution evidenced in the rheocast + grain refined alloy is validated via phase level mechanical properties of the alloy, estimated from nanoindentation.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"8 3 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930482","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

Solidification Processing of Reduced Graphene Oxide Dispersed Aluminum Composites by Squeeze Casting 用挤压铸造法凝固处理还原氧化石墨烯分散铝复合材料

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-10 DOI: 10.1007/s40962-024-01348-y

A. G. Arsha, Omid Ghaderi, T. P. D. Rajan, P. K. Rohatgi

{"title":"Solidification Processing of Reduced Graphene Oxide Dispersed Aluminum Composites by Squeeze Casting","authors":"A. G. Arsha, Omid Ghaderi, T. P. D. Rajan, P. K. Rohatgi","doi":"10.1007/s40962-024-01348-y","DOIUrl":"https://doi.org/10.1007/s40962-024-01348-y","url":null,"abstract":"The present paper is on the processing of Al (A356)- reduced Graphene Oxide (rGO) composites by the squeeze casting technique to obtain improved mechanical and thermal properties. Reduced graphene oxide, a two-dimensional carbon allotrope with very high mechanical properties and thermal conductivity is used as a reinforcement in A356 aluminum alloy. Graphite was initially converted to rGO using the Hummers Method. 0.3 to 0.75 wt% weight percentages of rGO were incorporated into the aluminum alloy using a combination of stir mixing in semisolid state followed by squeeze casting, a hybrid method was employed to produce rGO reinforced A356 alloy matrix composite after applying mechanical stirring for uniform dispersion. Squeeze pressure was crucial for increasing the cooling rate to get finer microstructure, and eliminating the porosity. Reduced Graphene oxide uniformly within the Al 356 alloy matrix by applying both mechanical stirring for dispersion and squeeze pressure for rapid solidification and pore free casting. The squeeze cast Al 356-0.5%rGO composites after T6 heat treatment had an increase in tensile strength from 260 MPa for A356 alloy to 346 MPa, an increase in hardness 106 BHN to 130 BHN, and a reduction in coefficient of thermal expansion (CTE) from 21.7 × 10−6/°C to 10.8 × 10−6/°C at RT-50 °C. These results suggest potential applications of these composites in high performance industrial, automotive, and aerospace sectors.","PeriodicalId":14231,"journal":{"name":"International Journal of Metalcasting","volume":"10 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930587","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

Comparison of Microstructure and Non-metallic Inclusions in Top-Filled and Bottom-Filled Gray Iron Castings 顶部填充和底部填充灰铁铸件中显微结构和非金属夹杂物的比较

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-10 DOI: 10.1007/s40962-024-01356-y

Evan Carter, Jingjing Qing, Mingzhi Xu

引用次数: 0

3D Printed Smart Mold for Sand Casting: Monitoring Binder Curing 用于砂模铸造的 3D 打印智能模具：监控粘合剂固化

IF 2.6 3区材料科学

International Journal of Metalcasting Pub Date : 2024-05-09 DOI: 10.1007/s40962-024-01314-8

Nathaniel Bryant, Josh O’Dell, Sairam Ravi, Jerry Thiel, Janely Villela, Juan Owen Villela, Eric MacDonald, Alan Alemán, Brandon Lamoncha, Brian Vuksanovich, Rich Lonardo

引用次数: 0