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| 1 | Research advances in magnesium and magnesium alloys worldwide in 2020显示文摘Research on magnesium alloys continues to attract great attention,with more than 3000 papers on magnesium and magnesium alloys published and indexed in SCI in 2020 alone.The results of bibliometric analyses show that microstructure control and mechanical properties of Mg alloys are continuously the main research focus,and the corrosion and protection of Mg alloys are still widely concerned.The emerging research hot spots are mainly on functional magnesium materials,such as Mg ion batteries,hydrogen storage Mg materials,and bio-magnesium alloys.Great contributions to the research and development of magnesium alloys in 2020 have been made by Chongqing University,Chinese Academy of Sciences,Central South University,Shanghai Jiaotong University,Northeastern University,Helmholtz Zentrum Geesthacht,etc.The directions for future research are suggested,including:1)the synergistic control of microstructures to achieve high-performance magnesium alloys with concurrent high strength and superior plasticity along with high corrosion resistance and low cost;2)further development of functional magnesium materials such as Mg batteries,hydrogen storage Mg materials,structural-functional materials and bio-magnesium materials;3)studies on the effective corrosion protection and control of degradation rate of magnesium alloys;4)further improvement of advanced processing technology on Mg alloys. | Yan Yang Xiaoming Xiong Jing Chen Xiaodong Peng Daolun Chen Fusheng Pan | 2021 | Journal of Magnesium and Alloys2021，9，3： | 52 |
| 2 | 镁合金塑性加工技术发展及应用显示文摘我国是世界上镁资源最为丰富的国家,镁及镁合金具有质轻、比强度高、阻尼减振、电磁屏蔽性能优良、储能特性好等优点,是最有潜力的轻量化材料之一,其推广应用对节能减排和能源转型战略具有重要意义。但镁合金具有密排六方晶体结构,塑性变形能力较差。如何改善镁合金的塑性变形能力是扩大镁合金应用的瓶颈问题之一。本文综述了10多年来,世界各国在改善镁合金塑性、提升镁合金塑性变形能力等方面所做的大量工作,及在镁合金塑性加工技术等方面取得的重要进展。发展了'固溶强化增塑'新型镁合金设计理论和'熔体变温自纯化'等关键制备技术,形成了一批高塑性变形镁合金材料和牌号,其中杂质Fe含量可降到10×10^(-6)以下,超高塑性镁合金延伸率可达到60%以上,超高强度(抗拉强度大于550 MPa)镁合金延伸率可以达到10%以上;开发了非对称挤压、非对称轧制、非对称改性、往复循环多道次镦挤开坯技术、扩收控制大比率锻造技术、挤锻复合成形技术等一批镁合金新型塑性加工技术。这些合金和技术使变形镁合金基面织构显著弱化,明显提高了变形镁合金板材、管型材和锻件的塑性成形能力和制品质量,产品成本大幅度降低,在板材、管型材和锻件制备加工中实现了成功应用。 | 潘复生 蒋斌 | 2021 | 金属学报2021，57，11： | 27 |
| 3 | Mg-9Gd-3Y-0.6Zr-0.05Ag镁合金模锻件微观组织及力学性能不均匀性研究显示文摘基于DEFORM-3D数值分析软件,模拟了Mg-9Gd-3Y-0.6Zr-0.05Ag镁合金模锻件的成形过程,并研究了其顶部(T)、中部(M)和底部(B)的微观组织和力学性能。结果表明:模锻成形后,模锻件内部区域的温度和应变沿挤压方向从顶部至底部的分布不均匀,其中,温度呈现逐渐升高的趋势,应变呈现先增大、后减小的趋势。在晶粒尺寸与织构的共同作用下,模锻件底部的屈服强度最高、中部次之、顶部最低。模锻件温度和应变的分布特点导致了其中部具有更加均匀的组织和较弱的织构,从而体现出最优的综合力学性能,即:屈服强度为198 MPa、抗拉强度为312 MPa、伸长率为17.0%。 | 张宗良 刘楚明 高永浩 姚毅 蒋树农 张冬冬 | 2021 | 锻压技术2021，46，2： | 11 |
| 4 | Effects of annealing treatment on microstructure and tensile behavior of the Mg-Zn-Y-Nd alloy显示文摘In the present study,the Mg-4Zn-0.6Y-0.5Nd alloy was hot extruded and annealed at 200℃,225℃ and 250℃ for different time to optimize microstructure and mechanical properties.The results exhibit that the dual-size grain structure and linearly distributed secondary phase are the main feature of the as-extruded Mg-Zn-Y-Nd alloy,which can be described as the elongated grain is surrounded by the fine equiaxed grain.Moreover,the as-extruded alloy shows strong{011^(-)0}fiber texture feature,especially for the large elongated grains.The annealing treatment results in static recrystallization,which increases fine equiaxed grains but decreases large elongated grains.In addition,the equiaxed grains formed during the annealing treatment demonstrate relative random orientations,which weaken the{011^(-)0}fiber texture of the alloy.Moreover,during the annealing at 225℃and 250℃,the extension twins begin to form in the alloy and weaken the{011^(-)0}fiber texture of the alloy further.The annealing treatment has little influence on the linearly distributed secondary phase but promotes the coarsening of small precipitates at 250℃.The annealing treatment could increase the yield and ultimate strength,but the elongation decreases,especially at higher temperature.Such a variation can be ascribed to the evolution of texture,grain structure,twinning and precipitation during the annealing treatment. | L.Y.Sheng B.N.Du Z.Y.Hu Y.X.Qiao Z.P.Xiao B.J.Wang D.K.Xu Y.F.Zheng T.F.Xi | 2020 | Journal of Magnesium and Alloys2020，8，3： | 10 |
| 5 | Effect of Y content and equal channel angular pressing on the microstructure, texture and mechanical property of extruded Mg-Y alloys显示文摘The microstructure, texture and mechanical property evolution of the extruded Mg-x Y(x = 1, 5 wt.%) alloys during equal channel angular pressing(ECAP) were systematically investigated using an optical microscope, electron backscatter diffraction(EBSD) and uniaxial tensile test. The Mg-Y alloys exhibited a weakened basal texture before the ECAP, and the texture was further weakened with the max basal poles dispersed along ~45° between the extrusion direction and the transverse direction after the ECAP. The Mg-5 Y alloys always exhibited a finer grain size comparing to that of Mg-1 Y for the same ECAP process. With a proper ECAP process, both the strength and elongation of Mg-5 Y alloy could be improved simultaneously after the ECAP, i.e., the yield strength(273.9 ± 1.2 MPa), ultimate strength(306.4 ± 3.0 MPa),and elongation(23.9 ± 1.0%) were increased by 10%, 6%, and 72%, respectively, comparing to that before the ECAP. This was considered to be arose from the combined effects of grain refinement, significant improved microstructure homogeneity and solid solution hardening.In addition, it was found that Mg-Y alloy with better comprehensive properties could be obtained by the decreasing-temperature ECAP processes. The yield strength-grain size relationship could be well described by the Hall-Petch relation for all the ECAPed Mg-Y alloys,which was consistent with that the texture changes did not significantly affect the average Schmid factors of basal, prismatic and pyramidal slips for both Mg-Y alloys. | W.Yang G.F.Quan B.Ji Y.F.Wan H.Zhou J.Zheng D.D.Yin | 2022 | Journal of Magnesium and Alloys2022，10，1： | 6 |
| 6 | 镁合金防腐工艺的研究进展显示文摘综述了微弧氧化、化学镀、涂层等镁合金防腐工艺的优缺点及最新研究进展,指出了未来的发展趋势。 | 王悦 李慧 梁精龙 韩晴 马悦鹏 邓孝纯 | 2020 | 电镀与涂饰2020，39，9： | 5 |
| 7 | The evolution of microstructure and texture of AZ80 Mg alloy cup-shaped pieces processed by rotating backward extrusion显示文摘This study proposed an effective plastic deformation technique,rotating backward extrusion(RBE),for producing high performance AZ80 magnesium alloy cup-shaped pieces.The RBE process was carried on the Gleeble-3500 test machine at 653 K,and the conventional backward extrusion(CBE)was also conducted for comparison.A detailed microstructure analysis was performed using the optical microscopy(OM)and electron back-scatter diffraction(EBSD).The results shown that the equivalent strain and deformation uniformity of the cup pieces could be substantially increased by the RBE process compared with the CBE process.Furthermore,the RBE process could significantly improve the grain refining capacity and the proportion of dynamic recrystallization(DRX),of which the maximum reduction of grain size was 88.60%,and the maximum increase of DRX proportion was 55.30%in the cup bottom.The main deformation mechanism of the RBE process was the discontinuous DRX(DDRX),while the continuous DRX(CDRX)was also occurred in the cup transition.Compared with the CBE sample,the texture of the cup bottom was weakened for the RBE sample.The microhardness value of the RBE sample was higher than that of the CBE sample,which can be attributed to the grain refinement strengthening. | Xin Che Qiang Wang Beibei Dong Mu Meng Zhi Gao Kai Liu Jin Ma Fulai Yang Zhiming Zhang | 2021 | Journal of Magnesium and Alloys2021，9，5： | 4 |
| 8 | 微弧表面处理对AZ31B镁合金耐腐蚀及耐腐蚀疲劳性能的影响显示文摘采用微弧表面处理技术(微弧氧化MAO和微弧复合MCC)在AZ31B镁合金基体上制备出不同断面结构的防护涂层。通过电化学腐蚀及腐蚀疲劳测试方法,研究了MAO、MCC涂层的电化学腐蚀及腐蚀疲劳性能。结果表明,生长10 min的MAO涂层具有较好的耐电化学腐蚀性能。MAO涂层表面存在微孔和微裂纹,在应力条件下微孔和微裂纹作为疲劳断裂的裂纹萌生点,可加速裂纹的萌生与扩展,使其腐蚀疲劳寿命相较AZ31B合金基体降低了55%。而具有MCC涂层的AZ31B合金试样腐蚀疲劳极限为(64.0±5.4) MPa,比AZ31B合金基体提高了59%。在低应力载荷下(<80 MPa),微弧复合涂层试样的腐蚀疲劳强度得到明显提高。 | 申毅 薛玉娜 陈汉 戴荣 王秒 耿永辉 张鑫圆 蒋百灵 | 2022 | 金属热处理2022，47，8： | 4 |
| 9 | 镁合金结构材料应用现状与展望显示文摘镁合金密度仅为铝合金的2/3,钢铁的1/4,因此镁合金零部件的大规模应用有助于轻量化和节能减排。在碳达峰、碳中和背景下,镁材料的发展应用潜力巨大。文章分析了国内外镁合金的产业现状及其加工技术,重点综述了镁合金作为结构材料在汽车、轨道交通、自行车、3C(计算机、通信和消费电子产品)、航空航天、国防工业等领域的发展与应用情况,梳理了目前镁产业存在的主要问题,最后对镁合金结构材料的未来发展进行了展望。 | 谭军 王芳磊 蒋斌 潘复生 | 2023 | 自然杂志2023，45，2： | 4 |
| 10 | Study of Mg-Al-Ca magnesium alloy ameliorated with designed Al8Mr4Gd phase显示文摘To investigate the effect of AlsMn4Gd phase on microstructural and mechanical properties of Mg-Al-Ca magnesium alloy,two Mg-2.5AbCa and Mg-2.5Al2Ca-0.1 Al8Mn4Gd alloys were designed and compared in this work.The results show that a small amount of Gd can significantly refine a-Mg grains and change the morphology of AUCa particles.Indeed,the formed Al8Mn4Gd phase could serve as a heterogeneous nucleation site for the a-Mg grains and AbCa particles.Furthermore,the introduction of Gd not only optimized the mechanical properties of Mg-Al-Ca alloy,but also facilitated the thermal deformation(such as hot rolling). | Chaosheng Ma Wenbo Yu Xufeng Pi Antoine Guitton | 2020 | Journal of Magnesium and Alloys2020，8，4： | 3 |
| 11 | 含碳增强体镁基复合材料的制备和界面调控的研究现状及发展趋势显示文摘镁基复合材料具有极强的设计性,有望满足航空航天、军工产品制造以及电子封装等领域对低密度、高强度和高刚度材料的需求。但是,现在镁基复合材料的性能还有许多问题需要解决,最突出的是增强体的均匀分散和界面问题。本文综述了镁基复合材料的组成及其各自的作用,分析了制约高性能镁基复合材料的增强体分散和界面优化以及目前镁基复合材料力学性能的局限性,展望了镁基复合材料的设计新思路和发展趋势。 | 周海涛 汪彦博 肖旅 孙京丽 徐玉棱 陈舸 | 2020 | 材料研究学报2020，34，11： | 3 |
| 12 | Influence of Ni interlayer on interfacial microstructure and mechanical properties of Ti-6Al-4V/AZ91D bimetals fabricated by a solid–liquid compound casting process显示文摘The solid–liquid compound casting of Mg-AZ91D and Ti-TC4 alloys was developed by using pure Ni electro-deposited coating.The pouring temperatures of 660℃,690℃,720℃and 750℃were chosen to investigated the effects of casting temperatures on microstructural evolution,properties,and fracture behaviors of Ni-coated TC4/AZ91D bimetals by the solid–liquid compound casting(SLCC).The scanning electron microscopy(SEM)and the energy dispersive spectroscopy(EDS)results showed that the interfacial zone mainly composed of nickel,Mg_(2)Ni and Mg-Al-Ni in the bimetals cast at 660℃.As the pouring temperature was increased to 750℃,the width of the interface zone,which mainly composed ofδ(Mg),Mg_(2)Ni,Mg-Al-Ni,Mg_(3)TiNi_(2) and Al_(3)Ni,gradually increased.The microhardness tests showed that the micro-hardness of the interface zone was smaller than that of TC4 substrate but larger than that of the cast AZ91D matrix.At the pouring temperature of 720℃,the Ni-coated TC4/AZ91D bimetals had the most typical homogeneous interface,which had granular Mg-Al-Ni ternary phase but no ribbon-like Al3Ni binary phase,and achieved the highest shear strength of 97.35MPa.Meanwhile,further fracture behavior analysis showed that most fracture failure of Ni-coated TC4/AZ91D bimetals occurred at the Mg_(2)Ni+δ(Mg)eutectic structure and Al_(3)Ni hard intermetallic. | Fulin Wen Jianhua Zhao Miaowang Yuan Jingfeng Wang Dengzhi Zheng Jinyong Zhang Ke He Jingjing Shangguan Yu Guo | 2021 | Journal of Magnesium and Alloys2021，9，4： | 3 |
| 13 | 选区激光熔化精密成形轻质镁合金的研究进展显示文摘选区激光熔化成形作为一种新兴的增材制造工艺,可以实现轻质镁合金复杂构件的一体化精密成形。由于镁合金的化学性质活泼,镁合金的选区激光熔化成形相较于其他合金系更具挑战性,沉积构件的强度、塑性、韧性等力学性能指标整体偏低,抗腐蚀性能整体偏差,所以还需进一步提升其综合性能并拓展镁合金的应用领域。综述了近年来国内外关于镁合金选区激光熔化成形方面的研究,为镁合金的精密一体化成形提供相应的理论基础和指导策略。首先阐述了该新兴工艺的原理及特点,基于镁合金熔沸点低、饱和蒸气压高等特点,综合探讨了微裂纹、孔隙和杂质等缺陷的形核原理,提出了相应的缺陷控制策略。对沉积试样的微观组织进行了分析,并与传统工艺进行了比较,并基于此讨论了合金成分微调控和镁基复合材料这2种实现成分微调控的主要方案。最后结合热处理、热等静压等后处理方式调控微观组织,并对采用摩擦搅拌、激光冲击强化等强化工艺结合选区激光熔化的复合增材制造工艺在线闭合缺陷、调控微观组织等技术进行展望,希望可以进一步提升镁合金的综合性能,促进镁合金更广泛的工程应用。 | 李新志 方学伟 常天行 冯成慧 黄科 | 2022 | 精密成形工程2022，14，4： | 2 |
| 14 | Improved strength and ductility of AZ31B Mg alloy sheets processed by accumulated extrusion bonding with artificial cooling显示文摘In this study,accumulated extrusion bonding(AEB)process with application of artificial water cooling was successfully performed to fabricate fined-grains AZ31B Mg alloy sheets at 150℃,200℃ and 250℃.The resultant microstructure and mechanical properties are systematically investigated.It reveals that the processing temperature has an important effect on the microstructural evolution during extrusion.During AEB process at 150℃ and 200℃,{10-12}tensile twinning was activated at early stage of extrusion,and subsequently continuous dynamic recrystallization(CDRX)occurred and dominated the further deformation.However,for the sample extruded at 250℃,hardly any twins can be observed,and new fined dynamic recrystallized grains were found along grain boundaries.Artificial cooling was utilized to reduce the rate of grain growth out of the extrusion die,resulting the grains significantly refined from 11μm to 2.5μm.Local high dislocation density region was also observed in the microstructure of sample processed at 150℃ in artificial cooling condition,and the degree decreased with the processing temperature increase.The results summarized from tensile tests indicated that due to the grain refinement the strength and ductility was significantly enhanced(YS of 186 MPa vs.145 MPa,UTS of 391 MPa vs.336 MPa and FE of 31.5%vs.24.5%compared with the as-received sample).Subsequently,annealing treatment at different temperatures was applied to eliminate the high dislocation density.The sample annealed at 200℃ exhibited the best comprehensive mechanical property with YS of 179 MPa,UTS of 390 MPa and FE of 33.0%.As the annealing temperature increasing,the dislocation density was reduced by static recrystallization(SRX)and grain growth,leading to a decreased strength and ductility. | Tingzhuang Han Jingfeng Zou Guangsheng Huang Lifeng Ma Chaojie Che Weitao Jia Lifei Wang Fusheng Pan | 2021 | Journal of Magnesium and Alloys2021，9，5： | 2 |
| 15 | Microstructure evolution,mechanical properties and creep mechanisms of Mg-12Gd-1MM-0.6Zr(wt%)magnesium alloy显示文摘In this research,the microstructure evolution,mechanical properties,and creep mechanisms of Mg-12 Gd-1 MM-0.6 Zr(wt%)alloy under different conditions were systematically studied using scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),and tensile creep tests.Regarding the microstructure of the as-cast sample,the average grain size is about 42μm,and the eutectic compounds were determined to be Mg_(5)(Gd_(0.8)MM_(0.2)).During homogenization,these eutectic compounds gradually dissolve,and Mg_(12)MM particles are precipitated.During hot extrusion,complete dynamic recrystallization(DRX)occurs,resulting in equiaxial grains with an average grain size of about 12μm and the formation of streamlines consisting of Mg_(12)MM particles along the extrusion direction(ED).After T5 treatment(225℃for 7 h),a large number ofβ'(Mg_(7)Gd)phases are precipitated on the{11-20}αhabit plane and are interconnected,forming an interlaced network structure.The ultimate tensile strength(R_(m)=405 MPa)and yield strength(R_(P0.2)=288 MPa)of the T5 sample are significantly higher than those of the as-extruded sample(R_(m)=289 MPa,R_(P0.2)=185 MPa),but the elongation(A=4%)was remarkably lower than that of the as-extruded sample(A=18%).When crept at225℃under 100 MPa,the steady-state creep rates of the as-cast,as-extruded,and T5 samples are1.59×10^(-8),1.08×10^(-8),and 1.40×10^(-8)s^(-1),respectively,and their total strains within 100 h are respectively breaking,0.81%,and 0.92%,indicating that the as-extruded alloy exhibits the best creep resistance.TEM analysis reveals that,during the creep process of the T5 sample,theβ'particles coarsen and the precipitate-free zones(PFZs)widen,which increase the steady-state creep rate and the total strain within 100 h as compared with the as-extruded sample. | Bibo Li Kui Zhang Guoliang Shi Kaikun Wang Yongjun Li Xinggang Li Minglong Ma Jiawei Yuan | 2021 | Journal of Rare Earths2021，39，5： | 2 |
| 16 | APTES改性蒙脱土对镁合金表面杂化溶胶-凝胶涂层防护性能的影响显示文摘针对蒙脱土与有机-无机杂化溶胶-凝胶体系较差的相容性,使用APTES对蒙脱土进行接枝改性,通过在蒙脱土表面引入氨基建立与溶胶-凝胶体系间较强的键合,在镁合金表面制备更加致密、稳定的复合涂层。对蒙脱土的表征结果表明APTES成功接枝到了蒙脱土片层上。结果分析表明,相比于纯溶胶-凝胶涂层,添加AP-MMT的溶胶-凝胶涂层的耐蚀性具有一定程度的提高。进一步对涂层样品浸泡在0.05 mol/L NaCl溶液中不同时间的电化学阻抗谱(EIS)分析表明,掺杂前后的溶胶-凝胶涂层具有不同的失效机制,这些都与改性蒙脱土的添加使得涂层具有更加致密的结构有关。 | 刘煊煊 于金山 高燕 赵鹏 王启伟 杜卓玲 张俊喜 | 2022 | 中国腐蚀与防护学报2022，42，3： | 2 |
| 17 | Mg-Al合金晶粒细化综述及未来展望显示文摘文章综述了Mg-Al合金中的各种细化方法,如过热法、FeCl_(3)、快速冷却法、合金化法以及C细化法等,阐述了Mg-Al合金各种晶粒细化方法的进展以及细化机理,为进一步开发Mg-Al合金晶粒细化技术提供参考。 | 胡中潮 高忠玉 陈湖演 李迪滔 蔡晓鸿 | 2022 | 有色金属加工2022，51，1： | 2 |
| 18 | 镁基复合材料的强韧化研究进展显示文摘镁基复合材料具有密度低、比强度和比模量高、热稳定性好等优点,在航空、航天以及汽车工业领域具有广泛的应用前景。然而,镁基复合材料在强度提高的同时往往伴随着塑性的降低,而且其室温断裂伸长率通常低于5%,这严重制约了该材料的工业推广与应用。而现有的镁基复合材料制备技术及强塑性理论不完善是目前导致其强塑性难以同时提高的主要原因。因此,发展高强韧镁基复合材料制备技术、完善镁基复合材料强塑性机理、突破镁基复合材料的性能瓶颈成为其发展方向。基于此,本文总结了目前镁基复合材料常用的基体与增强体、主要的制备技术、力学性能的研究现状以及相应的强韧化机理,提出了镁基复合材料强塑性调控的方法,并展望了未来发展趋势。 | 张斌 孙云霞 梁拓 李天 杨长林 | 2023 | 铸造技术2023，44，3： | 2 |
| 19 | 轧制方式对ATZS3311合金组织和高温力学性能的影响显示文摘采用光学显微镜、X射线衍射仪、万能材料试验机及扫描电镜等研究了轧制方式对传统重力铸造方法制备的ATZS3311合金的微观结构及高温力学性能的影响。结果表明,轧制方式对合金的微观结构及力学性能有显著影响。单向轧制的合金由于Mg_(2)Si相呈带状分布导致合金室温强度优于交叉轧制,但交叉轧制后Mg_(2)Si相分布更加均匀,其对合金高温强度的提升贡献显著。高温拉伸结果表明交叉轧制后的合金抗拉强度明显优于单向轧制的合金,经150℃和200℃拉伸后,其抗拉强度分别达到168 MPa和166 MPa,断裂伸长率可达28%和31%,以上结果表明交叉轧制可明显改善ATZS3311合金的高温力学性能。 | 王力 裴迪 李新林 裴志洋 | 2021 | 材料热处理学报2021，42，1： | 1 |
| 20 | 镁合金冷金属过渡熔池动态行为数值模拟显示文摘为研究冷金属过渡焊(CMT)的周期性能量输入及焊丝抽送行为对镁合金熔池动态行为的影响,在FLUENT软件中建立了焊丝-熔滴-熔池多相流数值分析模型。提出一种在流体体积法(VOF)多相流计算域中划分熔滴与熔池区域并判断其接触状态的方法,结合动网格技术实现自动响应的焊丝抽送,在熔池区域加载间歇性的热源、电弧力,采用镁合金CMT堆焊实验所得参数进行数值模拟。结果表明,在CMT能量输入周期的短路阶段,由于焊丝的回抽,熔池被向上提拉并在焊丝端部形成了液桥,内部液态金属在马兰戈尼力的作用下,由边缘流向中间,由下方流向上方,焊丝持续回抽至脱离熔池后,熔池受到液桥断裂的反作用力,液态金属快速向后方流动使熔池形状发生改变,可知焊丝回抽与马兰戈尼力是熔池动态行为的主导作用力,此外,焊缝熔深的模拟结果为0.53 mm,与实际成形焊缝的熔深存在3.47%的误差,验证了模型的有效性。 | 何俊杰 马瑞杨 王天琪 | 2022 | 材料科学与工艺2022，30，5： | 1 |
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