Article
Nanoscience & Nanotechnology
Quan Zhang, Yuna Wu, Tianfei Li, Chao Qiu, Shengqing Wang, Fujun Fan, Hang Teng, Changmei Liu, Huan Liu, Aibin Ma, Jinghua Jiang
Summary: In this study, the comprehensive performance of a ternary Al-8Zn-1Mg alloy was improved through room-temperature rolling, resulting in comparable or even better tensile properties than conventional alloys with more complex compositions. The fine-grain strengthening, dislocation strengthening, and hetero-deformation induced strengthening were found to contribute to the increased yield strength of the alloy. The delicate balance between strength and elongation was attributed to the formation of profuse microbands induced by high Zn solute atoms and stress.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Jiapeng Sun, Bangjun Li, Jie Yuan, Xiankai Li, Bingqian Xu, Zhenquan Yang, Jing Han, Jinghua Jiang, Guosong Wu, Aibin Ma
Summary: Developing wrought Mg alloys with excellent mechanical properties, such as an Mg-5.7Gd-1.9Ag wt. % alloy sheet, is crucial for extending Mg alloys' applications. The microstructure of the alloy showed a multiphase precipitate microstructure responsible for the strong aging response, with a suppressed stage II of strain hardening observed in the rolled and aged alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Physics, Applied
Yu Guo, Ye Wang, Bo Jiang, Hongtao Chen, Hongyu Xu, Maoliang Hu, Zesheng Ji
Summary: In this study, the effects of different reductions of hot-rolling on the properties of Al-Si-Fe-Mg alloy were investigated. It was found that the eutectic silicon phases were broken and moved during the hot-rolling process. The size of the eutectic silicon phase decreased and became more uniform with increasing reduction. The ternary Al-Fe-Si phases were also broken. These changes promoted the refinement and spheroidization of the eutectic silicon phase, leading to improved properties of the alloy.
MODERN PHYSICS LETTERS B
(2022)
Article
Materials Science, Multidisciplinary
Haochen Qiu, Shutian Tao, Wei Jiang, Xuehui Yan, Shuaishuai Wu, Shengli Guo, Baohong Zhu, Dongxin Wang
Summary: The refractory high-entropy alloy NbHfTiVC0.1 exhibits excellent mechanical properties and shows potential for various applications. In this study, hot rolling was conducted on NbHfTiVC0.1 alloy at different temperatures and reductions. The microstructure and mechanical properties were investigated, and it was found that the alloy rolled at 650℃ and 850℃ consisted of BCC, carbide, and Laves phases, while the alloy rolled at 1050℃ only consisted of BCC and carbide phases. The 650℃ sample with 80% reduction exhibited the highest ultimate tensile strength, while the 1050℃ sample with 80% reduction demonstrated the highest elongation.
Article
Chemistry, Physical
Ergen Liu, Qinglin Pan, Bing Liu, Ji Ye, Weiyi Wang
Summary: This study investigates the effect of hot rolling on the microstructure and corrosion performance of AA7050 aluminum alloy. It is found that hot rolling leads to grain refinement in the near-surface region due to dynamic recrystallization, and equiaxed grains with a size less than 500 nm are observed. Fibrous grains are observed in hot rolled AA7050 alloy with lower rolling temperature or larger reduction, attributed to severe elemental segregation at grain boundaries, which inhibits dynamic recrystallization. The density of precipitates in the fibrous grain layer is higher compared to the equiaxed grain layer, promoting nucleation of precipitates due to increased dislocation density and elemental segregation. Rolled AA7050 alloy with decreased density of precipitates and dislocations exhibits better corrosion resistance.
Article
Materials Science, Multidisciplinary
Tao Wang, Yufeng Huang, Yunzhu Ma, Lei Wu, Huanyuan Yan, Chao Liu, Yang Liu, Bing Liu, Wensheng Liu
Summary: Through cold rolling deformation, the microstructure of P/M aluminum alloy gradually transforms, with reduced grain size, increased relative density, and enhanced tensile strength. The improved mechanical properties mainly result from the combined effects of increased microstructural compactness and deformation strengthening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
E. P. Silva, R. H. Buzolin, F. Marques, F. Soldera, U. Alfaro, H. C. Pinto
Summary: Mg-Zn-Zr (ZK) alloys have high mechanical strength, but are susceptible to hot cracking due to the formation of low melting point precipitates. Adding rare earths can improve the alloy's performance. Ce-base mischmetal addition can enhance hot rolling behavior, refine grain size, and improve mechanical properties of ZK60 alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Bo Che, Liwei Lu, Jialong Zhang, Jie Teng, Liang Chen, Yong Xu, Tao Wang, Liang Huang, Zhiqiang Wu
Summary: AZ31 Mg alloy sheet prepared by hot rolling and cryogenic treatments exhibited refined microstructure and improved mechanical properties. The introduction of twins and the Al8Mn5 phase impeded dislocation movement and coordinated deformation. Compared to conventional hot rolling, the cryogenic treatment resulted in increased ductility and ultimate tensile strength of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Jakob Kraner, Peter Cvahte, Primoz Sustaric, Tomaz Sustar, Crtomir Donik, Irena Paulin, Shae K. Kim, Kyung Il Kim
Summary: Hot rolling is a crucial element in the process chain of aluminum-rolled products, as it affects material quality and productivity. Modifications in hot rolling are necessary to meet higher demands, and considerations must be given to changes in microstructure, crystallographic texture, mechanical properties, and formability. By reducing the thickness of the hot-rolled band, fewer cold rolling passes are required, allowing for hot rolling at lower temperatures. Microstructural and texture characterizations of the hot-rolled bands revealed differences in grain distribution and texture components between the 3.25 mm and 6 mm bands. The mechanical testing results showed significant differences in elongation values and earing, with the 3.25 mm hot-rolled band having higher earing results.
Article
Engineering, Civil
Amir Kazemi-Navaee, Roohollah Jamaati, Hamed Jamshidi Aval
Summary: This study investigates the effect of single roll drive cross rolling on the properties and microstructure of AA7075 aluminum alloy. The results show that with decreasing thickness, the grain size reduces, texture changes, hardness and strength increase, while ductility decreases.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Chang-Hee Cho, Dal-Oh Kim, Kwangtae Son, Hyun-Soon Park
Summary: Al-Zn-Mg-Cu alloys exhibit the best mechanical properties among aluminum alloys, but suffer from poor formability during metalworking processes. This study investigates the high-temperature deformation behavior and mechanisms of an Al-Zn-Mg-Cu alloy, highlighting flow instabilities at higher strain rates and cooler temperatures, reduced recrystallization, diminished power dissipation efficiencies, and notable alpha-fiber generation.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xinjie Zhu, Qunbo Fan, Xin Liu, Hong Yu, Duoduo Wang
Summary: The research on a hot-rolled titanium alloy sheet along the thickness direction revealed that the central region experienced larger deformation and formation of fine grains, resulting in distinct microstructures across the sheet. The surface exhibited the highest yield strength but the lowest elongation due to softening induced by dynamic recrystallization and strengthening by concentrated dislocations.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yongtao Xu, Zhifeng Zhang, Zhihua Gao, Yuelong Bai, Purui Zhao, Weimin Mao
Summary: The addition of refiner Sc to the high Zn/Mg ratio 7xxx series aluminum alloy melt significantly reduces hot cracking sensitivity, decreases grain size, and improves mechanical properties such as tensile strength and elongation rate.
Article
Chemistry, Physical
Q. Y. Yang, Y. L. Zhou, Y. B. Tan, S. Xiang, M. Ma, F. Zhao
Summary: The effects of microstructure, texture evolution, and strengthening mechanisms on the mechanical properties of 3003 aluminum alloy during cryogenic rolling were investigated. The results show that cryogenic rolling can significantly improve the mechanical properties of the alloy by enhancing dislocation strengthening and grain refinement strengthening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Chenhui Li, Hua Hou, Ruifeng Dong, Xiaoyang Zhang, Xiaolong Xu, Yuhong Zhao
Summary: This study investigates the microstructural characteristics, dynamic recrystallization, and mechanical properties of hot-rolled AZ31B. The results indicate that different recrystallization mechanisms are responsible for the microstructural evolution during rolling deformation. The mechanisms of twin-induced nucleation and stress-induced grain boundary migration dominate the recrystallization process, leading to grain refinement and an excellent strength-ductility balance in the specimens with a rolling reduction of 75%.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Ceramics
Rakesh Kumar, R. Thanigaivelan, G. K. Rajanikant, T. Jagadeesha, Jyotirekha Das
Summary: By coating hydroxyapatite and nano zinc particles on the surface, controlled coating thickness can be achieved, leading to improved cell viability. The study found that under certain concentration and voltage conditions, cells showed better attachment on the surface.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2021)
Article
Metallurgy & Metallurgical Engineering
S. Gowthaman, T. Jagadeesha, V Dhinakaran
Summary: The study reveals that the grain size of titanium aluminide alloy significantly affects its creep characteristics, followed by temperature and pressure. The creep mechanics of titanium aluminide alloy is predominantly influenced by the vacancy and lattice diffusion behavior of titanium and aluminum atoms at lower and higher temperatures.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Polymer Science
Vijay Tambrallimath, R. Keshavamurthy, Saravana D. Bavan, Arun Y. Patil, T. M. Yunus Khan, Irfan Anjum Badruddin, Sarfaraz Kamangar
Summary: The experimental study explored the mechanical properties of polymer matrix composites containing nanofiller developed by fused deposition modelling (FDM). By adding graphene to PC-ABS, improvements in tensile strength, impact resistance, and reduction in surface roughness were observed. The research indicated that the addition of graphene had significant positive effects on the mechanical properties of the composite materials.
Article
Metallurgy & Metallurgical Engineering
Mohammad Alipour, R. Keshavamurthy, Praveennath G. Koppad, Ali Shakiba, Nagaraja C. Reddy
Summary: The microstructure and mechanical properties of aluminum alloy Al-10Zn-3.5Mg-2.5Cu/graphene nanoplates composites produced by ball milling and stir casting were investigated. The addition of dispersed graphene nanoplates with high specific surface area significantly increased the strength of the composites. Tensile tests showed that the addition of graphene nanoplates increased the ultimate tensile strength. Heat treatment at T6 condition further improved the strength of the samples.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Materials Science, Multidisciplinary
P. Sureshkumar, C. Sasikumar, S. Thanga Kasi Rajan, T. Jagadeesha, L. Natrayan, M. Ravichandran, Dhinakaran Veeman, Wojciech Borek
Summary: This study investigates the physical, mechanical, and tribological properties of Al6063 alloy reinforced by Si3N4 and CuN2O6 through Powder Metallurgy techniques. The results show that higher percentages of reinforcement lead to increased hardness and density. The composites exhibit improved wear resistance compared to the base alloy. The weight percentage of the compound and the relationship between reinforcement percentage and applied load have the greatest impact on wear resistance.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
M. R. Haseebuddin, R. Keshavamurthy, S. J. Niteesh Kumar
Summary: In this research, graphene-reinforced Al matrix composite was synthesized and processed using powder metallurgy method and hot extrusion process. The microstructure of the composites was examined, and the tribological behavior was investigated. The results showed that the wear rate of the composites was lower than that of pure aluminum samples, but increased with higher sliding velocity and applied load. The coefficient of friction of the composites was also lower compared to pure aluminum samples, indicating superior tribological properties.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Coatings & Films
R. Health Royal Hermonson, R. Thanigaivelan, Vinod Kavya, K. Rathinasamy, T. Jagadeesha
Summary: This study investigates the biocompatibility of laser-textured 316L stainless steel coated with hydroxyapatite for orthopaedic implants. The study found that HA coatings on spherical dimpled textures exhibited better cell adherence. Among the tested samples, a sample with 98% laser energy input, 40.45 degrees contact angle, and 75.976 μm HA coating thickness was found to be the most suitable for bone implantation.
SURFACE ENGINEERING
(2023)
Article
Polymer Science
Ramaiah Keshavamurthy, Vijay Tambrallimath, Swetha Patil, Ali A. Rajhi, Alaauldeen A. Duhduh, T. M. Yunus Khan
Summary: The study focuses on the development of polymer composites based on polylactic acid (PLA) fortified with boron nitride (BN), and comprehensively explores their compatibility, synergy, and resulting properties. The findings serve as a foundational resource for enhanced polymer composite development.
Article
Materials Science, Multidisciplinary
R. Vasanth Kumar, R. Keshavamurthy, Chandra S. Perugu, C. Siddaraju
Summary: Hot rolling followed by T6 heat treatment significantly improves the microhardness and tensile strength of cast Al-Mg-Si alloy. The highest strength is achieved in the rolling direction compared to other directions and previously reported values or commercially available alloys.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2022)
Article
Materials Science, Multidisciplinary
Prabhakar Kuppahalli, Ramaiah Keshavamurthy, Padmanathan Sriram, Ahobal Narayana
Summary: The present investigation focuses on synthesizing RB031, RB032 Manganese Bronze alloys with the addition of silicon and characterizing them through Microstructure and Mechanical properties analysis. The study finds that RB032 alloy cast in Permanent molds exhibits superior hardness and tensile properties compared to Shell molds.
IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Vijay Tambrallimath, R. Keshavamurthy, Abhinandan Badari, Lohith Ramesh, Gagan Raj
Summary: The global pandemic COVID-19 has had a significant impact on manufacturing and supply chains, with Additive Manufacturing playing a crucial role in developing essential medical devices and protective equipment in response to the crisis.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Ashish Tiwari, T. Jagadeesha
Summary: Additive manufacturing is a technology used to produce complex shapes and optimize components under bending and torsion loads. It is suitable for batch and just-in-time production methods. However, one main drawback is the presence of micro cracks in additively manufactured components, which need to be carefully evaluated under various loading conditions.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Ganapati Shastry, Ashish Toby, M. B. Kumbhar, V. G. Salunkhe, T. Jagadeesha
Summary: With the increasing number of lower limb amputees, research on prosthetic legs has been growing. Active prosthetic legs closely mimic human legs but are expensive; passive prosthetic legs are cheaper but lack adequate torque. Semi-active prosthetic legs provide a balance between natural movement and affordability.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Multidisciplinary
Vishal G. Salunkhe, R. G. Desavale, T. Jagadeesha
Summary: This research proposes advanced fault detection strategies for taper rolling bearings, utilizing mathematical models and experiments to demonstrate the potential of DAMM and SVM in predicting dynamic response, extending service life, and reducing bearing failures.
ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART B-MECHANICAL ENGINEERING
(2021)
