Article
Materials Science, Multidisciplinary
Prosanta Biswas, Surajit Patra, Himadri Roy, Chandra Sekhar Tiwary, Manas Paliwal, Manas Kumar Mondal
Summary: The effect of manganese (Mn) addition on the microstructural morphology, mechanical properties, and fracture behavior of the gravity cast eutectic Al-12.6Si alloy was investigated. The addition of Mn led to an increase in hardness and improved ultimate tensile strength, yield strength, and elongation of the alloy. However, higher Mn concentrations resulted in increased brittleness due to the presence of the Al-15(MnFe)(3)Si-2 intermetallic phase, with optimal fracture behavior observed in the 1.0 wt% Mn added alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Crystallography
Matjaz Macerl, Franc Zupanic, Lara Hocurscak, Damjan Klobcar, Andras Kovacs, Tonica Boncina
Summary: The study investigated the impact of friction stir processing on the microstructure and properties of an experimental Al-Mn-Cu-Be alloy twin-roll cast strips. It was found that increasing rotational speed led to enhanced microstructure uniformity and several key processes occurring in the stir zone that positively affected alloy performance.
Article
Nanoscience & Nanotechnology
Beibei Zhao, Bing Ye, Liyang Wang, Yang Bai, Xin Yu, Qigui Wang, Wenying Yang
Summary: The mechanical behavior and microstructure evolution of a newly developed high strength die casting Al-13Si0.25Cu alloy were investigated in different conditions, showing that ageing treatment can improve the yield strength while thermal exposure can result in reduced hardness and increased ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Yangchao Deng, Wei Sun, Yang Yang, Hongyi Zhan, Kun Yan, Guang Zeng
Summary: The impacts of Mg2Sn precipitation on the age-hardening and deformation behavior of a Mg-4Sn-3Al-1Zn alloy have been studied. The alloy shows moderate hardening during ageing treatment at 175℃, with a significant increase in yield tensile strength but reduced elongation. Nanosized Mg2Sn precipitates are uniformly distributed within grains, improving tensile strength properties. Coarsened Mg2Sn precipitates and precipitate-free zones (PFZs) can be observed along grain boundaries. Tensile deformation primarily occurs in slip band array regions in grain interiors for the solution-treated alloy, and in PFZs for the as-aged alloy. The decrease in tensile ductility is caused by early intergranular microcracks initiated by coarse grain boundary Mg2Sn precipitates and PFZs. The results provide insights for developing affordable Mg alloys with a balanced combination of strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Franc Zupanic, Matjaz Macerl, Toshio Haga, Tonica Boncina
Summary: In this study, strips of an experimental Al-Mn-Cu-Be alloy were manufactured using high-speed single-roll and twin-roll casting methods. The results showed that the twin-roll-cast strip had a smooth surface, while the single-roll-cast strip had a rough surface. Both strips contained quasicrystalline phases in their microstructures, but the microstructure of the single-roll-cast strip was more uniform than that of the twin-roll-cast strip. The presence of coarse particles adversely affected the properties of the alloy.
Article
Multidisciplinary Sciences
F. Radkovsky, M. Gawronova, N. Valkova, P. Lichy, I Kroupova, V Merta, I Nguyenova
Summary: The article explores the potential of altering external conditions during solidification to influence the properties of aluminium alloy castings. The control of microstructure in casting production is crucial in meeting customer demands. The experiment aims to assess the impact of different preheating temperatures of the metal mould on the structure and thermal expansion of test castings made of AlSi10Mg material. The measured results will be cross-referenced and analyzed using the Microsoft Excel program.
Article
Nanoscience & Nanotechnology
Abhishek Pariyar, Laszlo S. Toth, Satish Kailas, Laurent Peltier
Summary: This study successfully addressed the issue of grain growth in Al-Mg alloy by introducing polymer derived ceramics, achieving a stable grain structure and minimal loss in hardness at high temperatures.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Jingyu Jiang, Feng Jiang, Menghan Zhang, Keke Yi
Summary: The impact toughness and fracture behavior of an Al-Mg-Sc alloy at two different temperatures were studied. The maximum load at room temperature was slightly higher than that at 120 degrees C. The total impact displacement for complete fracture of the alloy at room temperature was shorter than that at 120 degrees C. The room temperature sample showed a smaller shear lip area and a higher percentage of intergranular fracture compared to the 120 degrees C sample, indicating more severe plastic deformation for the sample at 120 degrees C.
Article
Materials Science, Multidisciplinary
Zhubin He, Jiangkai Liang, Haiming Zhang, Enyu Guo, Wei Du, Denis J. Politis, Liliang Wang
Summary: This study proposes an integrated process of laser powder bed fusion (LPBF) and hot metal gas forming (HMGF) to fabricate complex thin-walled components. A preform with a geometry close to the final component is first fabricated by LPBF and then formed into the desired shape by HMGF. The LPBF-fabricated AlSi10Mg sheets exhibit superior hot formability and mechanical properties compared to gravity cast AlSi10Mg sheets, laying the foundation for the integrated process of LPBF and HMGF.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yanfei Li, Jiancheng Yin, Yi Zhong
Summary: The microstructure evolution of Al-20Si-5Fe alloy during spray Conform (SC) was investigated, showing the fracture of intermetallic and Si phases, formation of fine intermetallic phases, and presence of coarse and fine grains in the extrusion rod. Additionally, the transition from complete to incomplete wetting was observed in the SC process.
Article
Materials Science, Multidisciplinary
Fan Zhang, Dongjin Shi, Ziyu He, Xiao Wang, Lu Li, Zhaolin Zhan, Zhentao Yuan
Summary: This study investigated the effect of heat treatment on the mechanical properties and microstructure of cast Al4.4Cu0.6Mn alloy. The results showed that the aging treatment time had an impact on the alloy's mechanical properties and microstructure. With increasing aging time, the tensile strength of the alloy increased gradually, and the size of precipitates also increased. The fracture mode was quasi-cleavage fracture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Min Hu, Yilin Sun, Jingchun He, Chong Li, Huijun Li, Liming Yu, Yongchang Liu
Summary: Isothermal compression tests were conducted on the Al-3%Mg2Si alloy in the temperature range of 300-500°C and strain rate range of 0.01-5 s-1, revealing typical dynamic recovery characteristics in the flow stress curves. A modified Arrhenius-type constitutive equation was established to describe the flow behavior. Microstructure evolution was analyzed based on the processing map. High efficiency of power dissipation regions was attributed to softening mechanisms of dynamic recovery and partial dynamic recrystallization, with Mg2Si particles also playing a positive role in the latter. Damage mechanism of unstable domains was identified as fracture and debonding of Mg2Si particles.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Li-Jing Zheng, Ling Guo, Fang-Fang Wang, Ming-Zhen Ma, Hu Zhang
Summary: By adding aluminum and using suction casting, a significant improvement in the microstructure of structural NiTi alloy has been achieved, resulting in better mechanical properties and a homogeneous distribution of intermetallic phases.
Article
Materials Science, Multidisciplinary
Jinmian Yue, Peng Peng, Anqiao Zhang, Shengyuan Li, Wanchao Zheng, Li Lu, Shudong Zhou
Summary: In this study, directional solidification method was used to investigate the growth characteristics of intermetallic compounds in Sn-9at.%Co peritectic alloy. The transition of the leading phase was found to occur at a distance that increased with growth velocity, and the hardness was observed to increase with growth velocity as well.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Surendra Kumar Chourasiya, Gaurav Gautam, Devendra Singh
Summary: The study examined the impact of warm rolling on the mechanical performance of an Al/Graphite alloy composite, and found that rolling could refine the grain size of alpha-aluminium and improve the strength and elongation percentage of the composite. As the reduction in rolling increased, the performance of the composite gradually improved.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Prosanta Biswas, Surajit Patra, Himadri Roy, Chandra Sekhar Tiwary, Manas Paliwal, Manas Kumar Mondal
Summary: The effect of manganese (Mn) addition on the microstructural morphology, mechanical properties, and fracture behavior of the gravity cast eutectic Al-12.6Si alloy was investigated. The addition of Mn led to an increase in hardness and improved ultimate tensile strength, yield strength, and elongation of the alloy. However, higher Mn concentrations resulted in increased brittleness due to the presence of the Al-15(MnFe)(3)Si-2 intermetallic phase, with optimal fracture behavior observed in the 1.0 wt% Mn added alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Suvam Chatterjee, Manas Kumar Mondal, Joydeep Maity
Summary: The study investigates joining T23 steel to T91 steel in a supercritical boiler using low-cost gas tungsten arc welding process with an iron-based filler wire. The joint exhibits significant strength and modest ductility, without the presence of a soft zone. Although Cr23C6 particles contribute to a cleavage mode of failure, the presence of a soft alpha-ferrite matrix still allows for a modest ductility to be retained.
STEEL RESEARCH INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Tanay Rudra Paul, Manas Kumar Mondal, Manab Mallik
Summary: This study investigates the densification behavior and novel design of core-rim microstructure for different ZrB2-MoSi2-SiCw composites, and identifies optimal combinations of sintering conditions to produce dense ceramic-matrix composites with core-rim grain structure. The addition of SiCw significantly improves the density and mechanical properties of the composites due to the formation of a core-rim structure.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Suvam Chatterjee, Manas Kumar Mondal, Joydeep Maity
Summary: The development of a novel technological route for joining dissimilar steels in a supercritical boiler using GTAW process with Nickel-based filler containing chromium has been successful. This method involves the diffusion of chromium from the molten weld pool to adjacent heat-affected zone, resulting in the evolution of sigma-phase that helps resist grain boundary sliding at boiler operation temperature.
PHILOSOPHICAL MAGAZINE
(2022)
Article
Metallurgy & Metallurgical Engineering
Rahul Bhandari, Prosanta Biswas, Ajay Pathania, Manab Mallik, Manas Kumar Mondal
Summary: The present research aims to optimize the process parameters of ECAP die design to improve the material flowability and microstructure morphology of Al6061-T6 alloy, thus enhancing the hardness and tensile strength.
CANADIAN METALLURGICAL QUARTERLY
(2022)
Article
Metallurgy & Metallurgical Engineering
Ritwik Das, Manas Kumar Mondal, Susanta Pramanik
Summary: Products developed through powder metallurgy have made significant contributions to structural, automotive, and aircraft industries. However, limited research has been conducted on the physical and mechanical properties of compacted reduced composite fines. This study investigates the density, compressive strength, and hardness of samples made from reduced composite fines after sintering at different temperatures.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Engineering, Electrical & Electronic
Sadhna Rai, Rabina Bhujel, Manas Kumar Mondal, Joydeep Biswas, Bibhu P. Swain
Summary: A GO/SiNWs heterojunction was formed by coating two-dimensional graphene oxide (GO) on one-dimensional silicon nanowires (SiNWs). The coating of GO improved the optical and electronic properties of SiNWs, enhanced the current-voltage characteristics, and reduced the reflectance of SiNWs. The GO/SiNWs heterojunction exhibited a lower leakage current.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Mechanics
Prosanta Biswas, Durbadal Mandal, Manas Kumar Mondal
Summary: Al-Mg2Si composites were developed using gravity die-casting techniques. The influence of Mg2Si reinforcement concentration on the strength, micromechanics, and failure initiation of the AlMg2Si composites under compression was studied. The compressive strength and brittle fracture of the Al-Mg2Si composite increase, while the strain decreases with higher Mg2Si concentration. The eutectic and primary Mg2Si phase sharp corners and narrow sections serve as fracture initiation sites, while the Al phase nearby the eutectic and Mg2Si phase sharp corners, as well as the narrow Al phase regions between two Mg2Si islands, act as void initiation sites in the composites under compression.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Rahul Bhandari, Prosanta Biswas, Manab Mallik, Manas Kumar Mondal
Summary: In this study, both experimental and numerical investigations were conducted to understand the microstructural morphology, mechanical properties and fracture correlation of hypereutectic Al-Mg2Si composite. The research innovation includes micromechanics studies and failure initiation through stress-induced deformation plasticity and energy dissipation theory. The results showed that the addition of Mg2Si affected the tensile strength, toughness, elongation, and yield strength of the composites. The fractography analysis revealed a mixed-mode fracture, including ductile and brittle fracture. Finite element analysis and experimental results demonstrated good agreement.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Prosanta Biswas, Manas Paliwal, Manas Kumar Mondal
Summary: The effects of Mg2Si concentration on the thermochemical behavior, solidification, thermal stability, and oxidation of Al-Mg2Si composites were investigated. FactSageTM 7.3 software and differential scanning calorimetry (DSC) were used to simulate the thermochemical behavior, solidification characteristics, and solid-liquid phase transformation. Thermogravimetric analysis (TGA) was conducted to study the thermal stability of the composites. The formation of oxides in Al-Mg2Si composites was explored through FESEM-EDX analysis. The results showed that the nucleation temperature and reaction starting temperature between Mg and Si were affected by the Mg2Si concentration. The thermal stability of Al was improved by Mg2Si, and the formation of different oxides varied with the increase in Mg2Si concentration.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Prosanta Biswas, Subhajit Das, Sushil Chandra Das, Manas Paliwal, Himadri Roy, Manas Kumar Mondal
Summary: This study employed gravity casting to modify hypoeutectic Al-7.6Si alloys with varying weight percentages (0.1%, 0.2%, and 0.3%) of Zr. The addition of Zr increases the liquidus temperature and leads to the formation of ZrSi and ZrSi2 compounds, which act as nucleation sites for eutectic Si and α-Al grains. As a result, the eutectic silicon transforms into a fibrous structure with a more uniform distribution, and the α-Al phase becomes finer and globular. These microstructural changes result in improved bulk hardness, ductility, and mechanical properties of the alloy.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Ajit Mondal, Prosanta Biswas, Manas Kumar Mondal, Srikanta Karmakar, Debasish Roy, Sanjib Bhattacharya, Amit Mallik
Summary: The effect of varying iron content on the crystallization behavior and electrical conductivity mechanism of glass nanocomposite was investigated. XRD, FTIR, DSC, and FESEM techniques were used to analyze the samples. The results showed different crystal phases and nanocrystallite sizes depending on the Fe content. FESEM images confirmed the formation of plate-like and dendrite nano crystallites throughout the glass matrix. The conductivity of the samples increased with increasing Fe content.
Proceedings Paper
Materials Science, Multidisciplinary
Akash Maity, Bishal Bidyut Buragohain, Prosanta Biswas, Rahul Bhandari, Anjan Pal, Manas Kumar Mondal
Summary: The microstructure, mechanical properties, and fracture behavior of Mn-added and Mn-free eutectic Al-12.6Si alloy were investigated. It was found that the addition of Mn improved the mechanical properties and resulted in a combination of brittle and ductile fracture modes under tension.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Materials Science, Multidisciplinary
Sadhna Rai, Rabina Bhujel, Manas Kumar Mondal, Bibhu Prasad Swain, Joydeep Biswas
Summary: The study investigated the effects of varying concentrations of AgNO3 on the properties of SiNWs, with the results showing that SiNWs obtained using 20mmol of AgNO3 had the longest length and smallest diameter, and exhibited specific space charge limited conduction characteristics.
MATERIALS ADVANCES
(2022)
