Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Guangli Bi, Hongsheng Man, Jing Jiang, Yuandong Li, Tijun Chen, Xiaoru Zhang, Daqing Fang, Xiangdong Ding
Summary: The effects of Zn addition on the microstructure and mechanical properties of Mg-Y-Co-W alloy were investigated. The replacement of Co with Zn improved the strength and ductility of the alloy, resulting in refined grains and precipitation strengthening from different phases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Wei Liu, Yuhong Zhao, Yuntao Zhang, Chuan Shuai, Liwen Chen, Zhiquan Huang, Hua Hou
Summary: Understanding the dynamic precipitation of LPSO phase and its effect on dynamic recrystallization in Mg-based alloys can provide insights for the manufacturing of high-performance alloys. This study found that the increase of Y and Zn atoms promotes the dynamic precipitation of 14H-LPSO phase in non-DRX and DRX grains respectively during hot extrusion.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Z. Aalipour, A. Zarei-Hanzaki, A. Moshiri, H. R. Abedi, Daudi Waryoba, A. Kisko, L. P. Karjalainen
Summary: The microstructure and microtexture changes of an extruded and annealed magnesium alloy were investigated under different strain and processing conditions. The results showed that the material underwent noticeable refinement even at low applied compressive strain. Recrystallization process was completed at a true strain of 0.3, and grain refinement was attributed to the LSN and CDRX mechanisms. At higher strain levels, most grains were found in deformed states and the microtexture only changed in terms of intensity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. Z. Wu, T. Nakata, G. Z. Tang, C. Xu, X. J. Wang, X. W. Li, X. G. Qiao, M. Y. Zheng, L. Geng, S. Kamado, G. H. Fan
Summary: This study investigates the effect of forced-air cooling on the microstructure and age-hardening response of a Mg-8.2Gd-3.8Y-1.0Zn-0.4 Zr alloy with plate-shaped LPSO phases. Results show that forced-air cooling restricts dynamic recrystallization, promotes dynamic precipitation, and enhances the overall mechanical properties of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Jianqiang Hao, Jinshan Zhang, Boqiong Li, Ruizhen Xie
Summary: The Mg-Zn-Y-Mn alloys were processed with different heat treatment techniques and extruded, resulting in specimens with and without the 14H LPSO phase. The alloy with 14H LPSO phase showed finer grains and stronger basal texture, leading to higher strength but lower elongation compared to the alloy without 14H LPSO phase. The presence of 14H LPSO phase hindered the nucleation and growth of DRX grains and affected the dynamic recrystallization and work hardening behaviors in extruded alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xiaojie Zhou, Wenying Xiong, Gang Zeng, Hongchao Xiao, Jian Zhang, Xianzheng Lu, Xiaomin Chen
Summary: The combined effects of LPSO orientation and alpha-Mg texture on tensile anisotropy were investigated, with the extrusion direction showing optimal mechanical properties, the 45 degrees direction exhibiting high elongation, and the transverse direction having inferior strength and elongation simultaneously. LPSO orientation contributes to strength anisotropy through different load-bearing strengthening effects along different tensile axes, while alpha-Mg texture contributes to strength anisotropy through stronger grain boundary strengthening effects. However, LPSO orientation, rather than alpha-Mg texture, accounts for ductility anisotropy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Si-shu Wang, Qian-hao Zang, Hong-mei Chen, Yu-hang Guo, Feng-jian Shi, Di Feng
Summary: The Mg-1Gd-0.75Er-0.5Zn-0.18Zr (at.%) alloy with LPSO phase was prepared by metal mold casting and hot extrusion. The samples showed a bimodal microstructure, and the annealed samples had different fractions of equiaxed grains. The extrusion temperature affected the percentage of fine grains and the presence of LPSO phase, which influenced the tensile properties of the Mg alloys.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Qiyu Liao, Wenxin Hu, Ruming Chen, Qichi Le
Summary: The precipitation behavior and dynamic recrystallization (DRX) behavior of Mg-Zn-Y alloys were systematically investigated in this work. The results showed that the LSPO phases significantly affected the grain size and strength of the alloy, and the Mg97.5Zn1Y1.5 alloy exhibited good heat resistance and mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zeru Wu, Jianmin Yu, Ziwei Zhang, Hongbing Hu, Zhimin Zhang
Summary: The static recrystallization behavior of a deformed Mg-13.14Gd-3.86Y-2.0Zn-0.39Zr alloy after different annealing treatments was investigated. The degree of recrystallization increased with higher annealing temperatures. The main mechanism for recrystallized grains formation was the transformation of low-angle grain boundaries into high-angle grain boundaries. The annealing treatment also resulted in a decrease in dislocation density and average grain size. Furthermore, the precipitation behavior of the Mg5(Gd,Y) phase changed from grain boundaries to inside the grains. The annealing treatment consumed the LPSO phases and caused a decrease in the basal texture strength of the alloy.
Article
Chemistry, Physical
Shuai Yuan, Jinhui Wang, Lei Zhang, Peipeng Jin
Summary: This study investigated the hot deformation behavior of a heat-treated Mg-12Y-1Al alloy containing long-period stacking ordered (LPSO) phase through uniaxial compression experiments. The flow stress decreased with increasing temperature and decreasing strain rate. Dynamic recrystallization (DRX) was promoted by higher temperatures. The main DRX mechanism observed was discontinuous dynamic recrystallization (DDRX), while the dense lamellar LPSO at the grain boundary hindered DDRX. The deformed microstructure showed a typical [0001]//CD texture, and its intensity decreased with increasing temperature due to multiple slip systems activation and increased DRX fraction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jonghyun Kim, Hongxin Liao, Xiang Ou, Zhaobin Zhang, Kaikai Kang, Taekyung Lee, Fusheng Pan
Summary: This study investigates the microstructures and mechanical properties of Mg-1Gd-1Y-xZn alloys (x = 0.2, 0.4, 0.6, and 0.8). The formation of long-period stacking-ordered (LPSO) and beta phases in the as-cast alloys is observed. The volume fraction of LPSO phase increases with higher Zn content, while that of beta phase decreases. Homogenization dissolves the beta phase into the Mg matrix but has no significant effect on the volume fraction of LPSO phases. Increasing Zn content slightly reduces grain size and enhances texture. The Mg-1Gd-1Y-0.2Zn alloy shows excellent mechanical properties at room temperature due to its high density of fine LPSO phases and reinforcement capacity. Additionally, the low volume fraction of LPSO phases in this alloy suppresses yield asymmetry.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Guoqin Wu, Zhaocan Li, Jianmin Yu, Hongbing Hu, Yali Duan, Beibei Dong, Zhimin Zhang
Summary: The texture evolution mechanism of Mg-13.1Gd-3.9Y-2Zn-0.4Zr (wt%) alloys during reciprocating upsetting extrusion and subsequent heat treatment was investigated. The influence of deformation passes on texture weakening and deformation mechanism was discussed. The results showed that the basal texture intensity decreased with increased deformation passes and significantly decreased after T6 heat treatment. The anisotropy of the alloys was maintained after T5 treatment and eliminated after T6 treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hidetoshi Somekawa, Michiaki Yamasaki, Yoshihito Kawamura, Tadanobu Inoue
Summary: By changing the insertion direction of the rolled billet, it is possible to control the area fraction of deformation kink bands, which can impact the mechanical properties of the alloy.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Cong Dang, Xiaoxu Dou, Jingfeng Wang, Di Yu, Jinxing Wang, Ruopeng Lu, Hua Hou, Yuhong Zhao
Summary: Different solution treatments at different temperatures were conducted on the Mg-9.55Gd-2.27Y-1.28Zn-0.55Zr-0.11Nd alloy, resulting in different phase constitutions. The Mg3RE-type eutectic phases transformed into long period stacking order (LPSO) phases with various morphologies after solution treatment. Increasing the solution temperature led to larger grain size, more lamellar LPSO phases, and segregation of Zr element. The special spatial structure consisting of prismatic b' precipitates, basal g' precipitates, and lamellar LPSO phases hindered dislocation movement effectively, leading to high strength, but also caused premature cracking and decreased ductility.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Crystallography
Zhipeng Wang, Gururaj Parande, Manoj Gupta
Summary: In this study, the Mg-4Zn-1Ca (wt. %) alloy was processed using disintegrated melt deposition, turning induced deformation technique, hot extrusion, and sinterless powder metallurgy. Different extrusion temperatures were tested to investigate their effect on the microstructure and properties of TID-processed Mg-4Zn-1Ca alloys. The results showed that the combination of TID and extrusion temperature significantly influenced grain refinement, with the best microhardness and compressive yield strength values observed at 300 degrees C. The properties of the alloys varied with different extrusion temperatures, indicating the potential of the sinterless TID technique for recycling and manufacturing magnesium-based materials.
Article
Chemistry, Physical
Michael Johanes, Manoj Gupta
Summary: A new method of synthesising porous Mg materials has been successfully explored by incorporating the turning-induced deformation (TID) method with sintering. The synthesized Mg materials exhibited comparable properties to previously-synthesised porous Mg materials, with subsequent sintering resulting in a more consistent mechanical response, especially with microwave sintering. The materials showed mechanical response within the range of human cancellous bone and, when reinforced with biocompatible silica nanoparticles, presented an optimal combination of mechanical properties for potential use as biodegradable implants due to their similarity to cancellous bone.
Article
Materials Science, Multidisciplinary
V. K. Bupesh Raja, Gururaj Parande, Sathish Kannan, Puskaraj D. Sonawwanay, V. Selvarani, S. Ramasubramanian, D. Ramachandran, Abishek Jeremiah, K. Akash Sundaraeswar, S. Satheeshwaran, Manoj Gupta
Summary: A Mg3Zn alloy and a Mg3Zn1HA nanocomposite were fabricated and subjected to fiber laser surface modification in air and water medium. The laser treatment in water medium resulted in lower surface roughness compared to air medium. The presence of nanohydroxyapatite (nHA) in the Mg3Zn1HA nanocomposite caused significant surface modifications, leading to increased surface roughness in both water and air media.
Article
Materials Science, Multidisciplinary
Shwetabh Gupta, Gururaj Parande, Khin Sandar Tun, Manoj Gupta
Summary: This study investigates the effect of deep cryogenic treatment on the microstructure and thermal and mechanical properties of a magnesium-based nanocomposite. The results show significant improvements in density, ignition temperature, compressive yield strength, compressive ductility, and microhardness after cryogenic treatment. This study provides valuable insights into the enhancement of magnesium-based nanocomposite properties through deep cryogenic treatment.
Article
Crystallography
Ahmad Ghahremani, Amir Abdullah, Alireza Fallahi Arezoodar, Manoj Gupta
Summary: Metal matrix nanocomposites (MMNCs) are gaining popularity in engineering and medical applications for their superior properties, particularly aluminum-based composites. Reinforcing aluminum alloys with ceramics, carbon allotropes, etc., can significantly improve their wear resistance. In this study, an aluminum alloy A356/SiO2 nanocomposite was fabricated using a vibration-assisted casting process. The addition of 0.125 wt.% of nanosilica resulted in the highest increase in hardness and the greatest reduction in friction coefficient and wear rate by 52%, 50%, and 68%, respectively.
Article
Materials Science, Multidisciplinary
P. Meenachi, R. Subashini, A. K. Lakshminarayanan, Manoj Gupta
Summary: Magnesium implants that are biocompatible and biodegradable are crucial for orthopaedic applications. However, the biocompatibility, degradability, corrosion behavior, and bioactivity of Mg-based alloys can vary depending on composition and microstructure. This study examined the cytotoxicity, hemocompatibility, corrosion, and biomineralization of pure Mg and its nanocomposites to assess their suitability as biodegradable materials. The results showed that pure Mg and its nanocomposites responded differently in different tests, suggesting that comparing Mg nanocomposites could be a more effective strategy for orthopaedic implant applications.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Materials Science, Biomaterials
A. Bahgat Radwan, Paul C. Okonkwo, Srinivasan Murugan, Gururaj Parande, Maryna Taryba, M. Fatima Montemor, Layla Al-Mansoori, Mohamed A. Elrayess, Noora Al-Qahtani, Manoj Gupta, Khaled M. Youssef, Raymundo Case, R. A. Shakoor, Aboubakr M. Abdullah
Summary: Currently used titanium and stainless steel implants for permanent vascular stents have disadvantages of corrosion and the need for a second surgery. Biodegradable magnesium alloys have been found to be a promising substitute. This study investigates the biodegradation performance of a magnesium alloy reinforced by zinc and eggshell in simulated body fluid.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Review
Engineering, Biomedical
Sankaranarayanan Seetharaman, Dhivya Sankaranarayanan, Manoj Gupta
Summary: Biomedical implants are important for repairing or replacing damaged or diseased tissues or organs. The success of implantation depends on factors such as mechanical properties, biocompatibility, and biodegradability of the materials used. Magnesium-based materials have emerged as a promising class of temporary implants due to their remarkable properties. This review article provides a comprehensive overview of the properties, research works, and potential applications of Mg-based implants.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Engineering, Multidisciplinary
Anirudh Venkatraman Krishnan, Manoj Gupta
Summary: The automotive industry focuses on using alloys and composites of aluminium and magnesium to light weight vehicles and improve fuel efficiency. In the biomedical industry, research is ongoing to improve the material properties of biocompatible magnesium alloys and composites for implants. To track the efficiency of these implants, appropriate sensors are needed, but the placement and impact on structural integrity remain unknown. This study investigates the effect of drill depths and diameters on pure magnesium samples, with the sample of 1 mm drill diameter and 1.5 mm drill depth showing optimum results.
ENGINEERING RESEARCH EXPRESS
(2023)
Article
Materials Science, Multidisciplinary
Bin Shi Jie Bryan, Kai Soon Fong, Chua Beng Wah, Sravya Tekumalla, Min Kyung Kwak, Eun Soo Park, Manoj Gupta
Summary: Spark plasma sintering (SPS) was used to successfully synthesize Mg-Zn-Ca bulk metallic glasses (BMGs) with near-net amorphous structure. Sintering at prolonged times increased densification and improved structural integrity and mechanical properties. These samples also exhibited significantly better corrosion resistance compared to the crystalline form.
Article
Crystallography
Chitti Babu Golla, Mahammod Babar Pasha, Rajamalla Narasimha Rao, Syed Ismail, Manoj Gupta
Summary: This study focuses on the development of aluminium matrix composites (AMCs) containing titanium carbide (TiC) particles and explores their mechanical and tribological properties. The incorporation of 8 wt.% TiC reinforcement in the metal matrix composites showed significant improvements in hardness, ultimate tensile strength, and yield strength compared to the base alloy. The inclusion of TiC reinforcement particles greatly enhanced the wear resistance and friction coefficient of the Al-6TiC composites.
Article
Materials Science, Multidisciplinary
Tianjiao Li, Jiang Zheng, Manoj Gupta, Liuyong He, Lihong Xia, Bin Jiang
Summary: Abundant {10-12} twins were observed in a extruded Mg-2.8Y (wt. %) sheet with RE texture during compression and reverse tension. The deformation mechanisms were studied quantitatively, and twin variants with higher Schmid factors were activated preferentially. The crystallographic characteristics of twinning transfer were analyzed through grain boundary misorientation angle and geometric compatibility factor. The distribution of short twin chains and restriction of long twin bands were influenced by texture and loading path.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Metallurgy & Metallurgical Engineering
C. A. Niranjan, T. Raghavendra, Madhuri P. Rao, C. Siddaraju, M. Gupta, Vikram Kumar S. Jain, R. Aishwarya
Summary: Mg alloys are considered potential alternatives for permanent metallic implants and are seen as game changers in the field of engineering and biomedical applications. This review highlights the significance of Mg alloys in the biomedical field, particularly in cases where permanent metallic implants are no longer required. It discusses the importance of orthopedic implants, the risks associated with permanent disabilities, the global demand for orthopedic implants, the potential applications of Mg based materials, and their compatibility in biological environments. The review also covers the degradation rate, reactions, and the effect of alloying elements on implant performance based on in-vivo results. Recent advances in the development of Mg alloys and their performance under in-vitro conditions are outlined, as well as possible ways to overcome the limitations of Mg alloys through alloying, surface alterations, and chemical treatments. The challenges and opportunities for Mg alloys to become ideal implant materials are also addressed.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Review
Engineering, Multidisciplinary
Yue Hao Choong, Manickavasagam Krishnan, Manoj Gupta
Summary: Thermal management devices are crucial for various engineering applications, but their functional designs have been constrained by traditional manufacturing methods, resulting in limited thermal performance. 3D printing technology offers the freedom to overcome these constraints, and recently, the 3D printing of pure copper has become feasible. However, advanced thermal management devices require topology-optimized filigree structures, which require a different processing approach.
Article
Materials Science, Multidisciplinary
Vivek Sharma, Ashis Mallick, Manoj Gupta
Summary: Ball milling was used to synthesize ultrahigh strength Al7075/xZrO2 alloy nanocomposites. The addition of 2.53 vol.% ZrO2 nanoparticles significantly improved the mechanical and tribological properties of the nanocomposites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)