Article
Metallurgy & Metallurgical Engineering
Yuxiang Liu, Michele Curioni, Shiyun Dong, Zhu Liu
Summary: In this study, the biodegradable Mg-1Ca alloy was modified using a KrF excimer laser, and the degradation behavior of the alloy before and after laser treatment was investigated. The results showed that the corrosion resistance of the alloy was improved after laser treatment, and a two-layer structure was formed.
JOURNAL OF MAGNESIUM AND ALLOYS
(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
Chemistry, Physical
Bangjun Li, Jiapeng Sun, Bingqian Xu, Guosong Wu
Summary: This paper investigates the corrosion behavior of Mg-5.7Gd-1.9Ag alloy sheets in a salt solution. The results show that the rolled sheets exhibit better corrosion resistance compared to the as-cast sheets. Aging treatment decreases corrosion resistance, but it still remains higher than that of the as-cast sheets. The migration of corrosion is mainly influenced by the evolution of second phases rather than grain size and texture.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Mechanical
Xinde Huang, Yunchang Xin, Yu Cao, Wei Li, Guangjie Huang, Xi Zhao, Qing Liu, Peidong Wu
Summary: The study investigated the texture evolution of a Mg-Zn-Ca plate during cold rolling and subsequent annealing. It was found that basal slip was the main deformation mode and prismatic slip preserved the TD-split texture. Pyramidal slip caused the widening of the basal texture. Grain nucleation occurred at grain boundaries, deformation twins, and near precipitates, with minimal texture change.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
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
Chemistry, Physical
Wei Li, Guangjie Huang, Xingpin Chen, Xinde Huang
Summary: Mg-2Zn-0.5Ca alloy sheets fabricated with different rolling parameters were evaluated to study the influence of rolling parameters on room-temperature stretch formability. The sheet rolled at 360 degrees C with a pass rolling reduction of 10% to 33% exhibited the lowest I.E. value of 4.4 mm, while the sheet rolled at 360 degrees C with a pass rolling reduction of 20% to 50% showed the highest Erichsen (I.E.) value of 5.9 mm. The microstructural and deformation mechanism analysis revealed that the sheet with the best formability had a weaker texture and a broader distribution of basal poles in the plane.
Article
Engineering, Biomedical
Wenhui Wang, Carsten Blawert, Rui Zan, Yu Sun, Hongzhou Peng, Jiahua Ni, Pei Han, Tao Suo, Yang Song, Shaoxiang Zhang, Mikhail L. Zheludkevich, Xiaonong Zhang
Summary: The study successfully obtained bulk nanocrystalline Mg alloy with high strength and good corrosion resistance through hot rolling process of a lean Mg-2wt.%Zn alloy. The microstructure evolution during the rolling process was analyzed in depth, providing a new direction for the development of lean biomedical Mg alloys.
BIOACTIVE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xiaoqing Liu, Xiaoguang Qiao, Liyao Ye, Xianke Zhang, Mingyi Zheng
Summary: A Mg-1Al-1Ca-0.4Mn (AXM1104, wt%) alloy extruded at 250°C with a ram speed of 0.1 mm/s obtains a unique bimodal microstructure. The as-extruded alloy exhibits a high tensile yield strength of 474 MPa and a low ductility of 2.1%, surpassing conventionally extruded rare-earth-free Mg alloys reported so far. After annealing at 300°C for 10 min, the annealed alloy achieves a good strength-ductility balance, with a yield strength of 426 MPa and an elongation of 5.4%. The ultrahigh yield strength of the as-extruded alloy is attributed to the combined strengthening effect of grain boundary, dislocation, and texture, while the as-annealed alloy is mainly strengthened by both grain boundary strengthening and precipitation strengthening from planar Al2Ca nano phase.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Metallurgy & Metallurgical Engineering
Feng Leng, Feng Wang, Xudong Du, Zhi Wang, Zheng Liu, Pingli Mao
Summary: The effect of Sn addition on the hot tearing susceptibility of Mg-4Zn-xSn-0.6Zr alloy was studied. It was found that appropriate Sn addition could reduce the hot tearing susceptibility, while excessive Sn content increased it.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Chemistry, Physical
Siqi Liu, Han Ma, Zhenghua Huang, Zhongming Zhang, Chunjie Xu, Xiao Li, Feng Chen, Zhiqiao Yan, Fengyu Kong, Anding Wang, Zhixiang Liu
Summary: The Mg-8Gd-4Y-1Zn-0.5Al alloy prepared by metal type casting was subjected to rolling or extrusion-rolling to obtain sheets, followed by aging treatment. The microstructures and mechanical properties of the sheets were analyzed. The optimal process was determined to be rolling at 793 K with a deformation of 70%, resulting in a sheet with fully dynamic recrystallized grains and strong basal texture. After aging treatment, the sheet exhibited good mechanical properties. The extruded sheets showed grain growth and texture change after rolling at 793 K with a 50% deformation. The 18R-LPSO structures in the sheets affected the mechanical properties. Anisotropy was observed in the mechanical properties of the extrusion-rolled sheet.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yan Zhang, Yuyan Liu, Yunting Guo, Long Yuan, Jiang Li, Weimin Huang
Summary: The Mg-6.0Zn-1.0Nd-0.5Zr (ZNdK610) alloy exhibits superior tensile properties and anti-biodegradability compared to the ZK60 alloy, attributed to refined grains and the formation of new intermetallic phases in the microstructure. The tensile strengths of ZNdK610 reach 388 MPa (ultimate tensile strength, UTS) and 356 MPa (yield strength, YS), showing significantly improved anti-biodegradability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Chen-Yi Ma, Nan Xia, Cheng Wang, Mei-Xuan Li, Zhen-Ming Hua, Ming-Wen Ren, Hui-Yuan Wang
Summary: The novel AZT522 alloy, designed and fabricated through hot rolling and annealing treatment, exhibits better mechanical properties and microstructure, showing higher tensile strength and hot rolling formability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Umer Masood Chaudry, Kotiba Hamad, Tea-Sung Jun
Summary: In this study, the microstructure, crystallographic texture, and mechanical performance of hot-rolled pure Mg and Mg-2Al-1Zn-1Ca alloys were thoroughly investigated. The designed Mg-2Al-1Zn-1Ca alloy showed an exceptional strength/ductility synergy with a nearly 40% increase in ductility compared to pure Mg. The grain refinement and dispersed precipitates in the Mg-2Al-1Zn-1Ca alloy resulted in a weakened texture, leading to the preferential evolution of non-basal grains and hindering the growth of basal grains.
Article
Materials Science, Multidisciplinary
Kaixin Chen, Lizhen Yan, Yongan Zhang, Xiwu Li, Zhihui Li, Guanjun Gao, Hongwei Liu, Baiqing Xiong
Summary: The effect of initial hot-rolling temperature on microstructure, texture, and formability of Al-Mg-Si alloy sheets was investigated. The study found that the initial rolling temperature influences the particles distribution and further affects the recrystallized microstructure and texture. A rolling temperature of 530 degrees C was found to be the most conducive to improving the formability of the alloy sheet.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
K. M. Zohdy, Rabab M. El-Sherif, A. M. El-Shamy
Summary: According to the National Institute of Health, magnesium and its components are desired materials for biomedical implantation due to their biodegradability, non-toxic nature, and remarkable natural and mechanical properties. In this study, the independent and synergistic corrosion effects of different simulated bodily fluid (SBF) modules were investigated. The experiment examined the corrosion of magnesium submerged in SBF solution and found that artificial pH variations can accelerate the degradation process. The results confirmed the corrosion process of magnesium through scanning electron microscopy observations of damaged surface morphology. pH 7 was selected as the pH for bodily fluids based on these investigations.
Article
Materials Science, Multidisciplinary
H. Jafari, F. Rahimi, Z. Sheikhsofla, M. Khalilnezhad
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2017)
Article
Thermodynamics
Hassan Jafari, Maryam Khalilnezhad, Saeed Farahany
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2017)
Article
Materials Science, Multidisciplinary
Leila Ghasemi, Hassan Jafari
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2017)
Article
Materials Science, Coatings & Films
Z. Shahri, S. R. Allahkaram, R. Soltani, H. Jafari
SURFACE & COATINGS TECHNOLOGY
(2018)
Article
Thermodynamics
Saeedeh Naghdali, Hassan Jafari, Mehdi Malekan
THERMOCHIMICA ACTA
(2018)
Article
Metallurgy & Metallurgical Engineering
H. Jafari, E. Heidari, A. Barabi, M. Dashti Kheirabadi
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2018)
Article
Materials Science, Ceramics
Leila Ghasemi, Hassan Jafari, Ali Jafari
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
Hassan Jafari, Behrouz Mohammad Hassanizadeh
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2019)
Article
Metallurgy & Metallurgical Engineering
F. Doost Mohammadi, H. Jafari
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2018)
Article
Materials Science, Multidisciplinary
Mahdi Shiri, Hassan Jafari
Article
Metallurgy & Metallurgical Engineering
Z. Shahri, S. R. Allahkaram, R. Soltani, H. Jafari
JOURNAL OF MAGNESIUM AND ALLOYS
(2020)
Article
Materials Science, Multidisciplinary
Mohammad Reza Hadavi, Hamed Yarmohammad Touski, Hassan Jafari, Faramarz Ashenai Ghasemi
Summary: Friction stir processing (FSP) is applied to MIG welded aluminum alloy 5083-H111 plates in this study to improve the mechanical strength and corrosion fatigue life of the welded joints. Microstructural observations show large grain refinements after FSP, with the best results achieved using a rotational speed of 750 rpm.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Hassan Jafari, Alireza Mazloumian, Mohammad Meghdad Fallah
Summary: The study indicates that increasing the Al2O3 content can enhance the hardness and wear resistance of magnesium alloy matrix composites. The extrusion temperature significantly affects the wear resistance of composites, with samples extruded at 350 degrees Celsius demonstrating the best wear resistance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Zanko Rouein, Hassan Jafari, Fatemehsadat Pishbin, Fatemeh Mohandes, Abdolreza Simchi
Summary: This research evaluated the in vitro bioactivity and biocompatibility of a novel composite coating based on PMMA biopolymer and BG particles on a magnesium-based implant. The study demonstrated a significant reduction in the corrosion rate of magnesium implants coated with the composite film, highlighting the potential of this approach for successful bone tissue engineering applications.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Z. Shahri, S. R. Allahkaram, R. Soltani, H. Jafari
Summary: The aim of this study is to investigate the surface properties of protective coatings applied for various periods on Mg-5Zn-0.4C (ZX504) magnesium alloy using the micro-arc oxidation (MAO) method and to study their corrosion behavior in a phosphate-buffered-saline solution. The coating time has a great effect on the surface characteristics, and the obtained MgO coatings have nano-crystalline structure. However, coatings obtained at higher process time are less protective due to the presence of large pores and cracks, resulting in enhanced diffusion of corrosive ions.
