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材料科学技术（英文版）
材料科学技术（英文版）

胡壮麟

月刊

1005-0302

jmst@imr.ac.cn

024-83978208

110016

沈阳市沈河区文化路72号

材料科学技术（英文版）/Journal Journal of Materials Science & TechnologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊简称《JMST》，（ISSN 1005-0302，CN 21-1315/TG）。1985年创刊。是中国科协主管，中国金属学会，中国材料研究学会和中国科学院金属研究所联合主办的国际性英文期刊，以“加强国际交流，扩大学术影响，服务经济建设”为办刊宗旨，刊登世界各国的具有创新性和较高学术水平的原始性论文，并设有物约综述、快报、简讯及国内外材料界杰出学者简介等栏目，内容包括金属材料、无机非金属材料、复合材料及有机高分子材料等。
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    Facile fabrication of self-healing silicone-based poly(urea-thiourea)/tannic acid composite for anti-biofouling

    Jiawen SunChao LiuJizhou DuanJie Liu...
    1-13页
    查看更多>>摘要：A novel silicone-based poly(urea-thiourea)/tannic acid composite(PDMS-P(Ua-TUa)-TA)with excellent mechanical,self-healing and antifouling properties is developed.The multiple dynamic hydrogen bonds formed by thiourea groups,urea groups,and tannic acid(TA)molecules ensured a tough elastomer(ul-timate strength:2.47 MPa)with high stretchability(～1000％).TA molecules as partial hydrogen bond-ing cross-linking sites interacted rapidly with urea and thiourea groups before the migration of polymer chains,resulting in fast and efficient self-healing.Scratches on the film completely disappeared within 12 min,and the repair efficiency of strength was up to 98.4％within 3 h under ambient condition.Self-healing behavior was also evaluated in artificial seawater and the healing efficiency(HE)was 95.1％.Fur-thermore,TA uniformly dispersed in the polymer matrix provides good antibacterial and anti-diatom properties,as well as strong adhesion to the substrate(～2.2 MPa).Laboratory bioassays against marine bacteria adhesion(～96％,～95％and～93％reduction for P.sp.,E.coli,and S.aureus,respectively)and diatom attachment(～84％reduction)demonstrated an outstanding antifouling property of the PDMS-P(Ua-TUa)-TA.This work provides a promising pathway towards the development of high-performance silicone-based coatings for marine anti-biofouling.
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    Efficient grain refinement of Al alloys induced by in-situ nanoparticles

    Hongxiang JiangYan SongLili ZhangJie He...
    14-25页
    查看更多>>摘要：Grain refinement of Al and Al alloys during the solidification remains a long-term challenge.Here we report a general strategy for efficient grain refinement through instantaneously in-situ forming abundant nanoparticles with concentrated size distribution.The Al-Zn-Mg-Cu alloy and commercial purity Al are respectively refined by using this proposed strategy and the traditional refinement method(adding Al-Ti-B alloy into Al melt),and the experimental and numerical results indicate that the TiB2 nanoparticles instantaneously form in the Al melt during the in-situ refinement process.Compared to the traditional refinement treatment method,the new approach not only can promote the high number density of the nucleation sites and narrow their size distribution,but also tremendously attenuates the agglomeration and settlement of the heterogeneous nucleation sites.It exhibits much better grain refinement ability and inhibits the decline of the grain refinement efficiency.This approach may have broad application prospect not only for the grain refinement of Al and Al alloys,but also for the grain refinement of other alloy systems,e.g.steel,magnesium,copper,and so on.
      原文链接:
    • 维普
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    Hybrid Cellular Automaton-Parabolic Thick Needle model for equiaxed dendritic solidification

    Romain FleurissonOriane SenningerGildas GuillemotCharles-André Gandin...
    26-40页
    查看更多>>摘要：A hybrid Cellular Automaton(CA)-Parabolic Thick Needle(PTN)model is developed for the simulation of an equiaxed dendritic grain.It is implemented by solving conservation equations with the Finite Element(FE)method at two scales.At the scale of the microstructure,dendritic branches are approximated by a network of PTN.The solute field is computed in the liquid using a FE mesh with minimum size smaller than the diffusion length ahead of the dendrite tips,giving access to a detailed description of each den-drite tip growth velocity as well as solutal interactions between branches.At the simulation domain scale,volume averaged heat and solute transfers are solved on a coarser FE mesh.The average volumetric frac-tion of phases is deduced from a field giving the fraction of dendritic microstructure together with a microsegregation model.Because the PTN themselves grow on CA cells,the dendrite tip growth velocity is transferred to the vertices of the polygon associated to the CA growth shape.Similarly,the field giving the fraction of dendritic microstructure is deduced from the fraction of CA cells part of the mushy zone,which include cells containing PTN network.Advantages of the new multiple scale CAPTN model include solutal interaction between dendrite branches together with long range transfer of heat and solute mass,together with the role of latent heat release on equiaxed solidification.
      原文链接:
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    Enhanced strength and ductility in Al-Zn-Mg-Cu alloys fabricated by laser powder bed fusion using a synergistic grain-refining strategy

    Xiaohui LiuYunzhong LiuZhiguang ZhouQiangkun Zhan...
    41-52页
    查看更多>>摘要：Grain refinement is critical to surpassing the bottlenecks of inherent hot tearing of high-strength alu-minum alloys fabricated by additive manufacturing(AM).In this study,a synergistic grain-refining strategy including heterogeneous nucleation,solute-driven growth restriction and nanoparticle-induced growth restriction was introduced to control the microstructure of Al-Zn-Mg-Cu alloys during the laser powder bed fusion(LPBF)process.Crack-free Al-Zn-Mg-Cu alloys with significantly refined grains were safely fabricated via LPBF by coincorporation of TiC and TiH2 particles.In-situ L12-Al3Ti particles were produced to promote the heterogeneous nucleation.The grain growth was restricted by adding Ti so-lute,while introduced TiC nanoparticles(NPs)improved the density of heterogeneous nucleation sites and blocked grain growth physically.The resultant elimination of columnar grains and hot cracks in the(1 wt.％)TiC-and(0.8 wt.％)TiH2-modified Al-Zn-Mg-Cu alloy resulted in excellent ultimate tensile strength(UTS)of 593±24 MPa,yield strength(YS)of 485±41 MPa and elongation(EL)of 10.0％±2.5％under the T6 condition.This study provides new insights into improving the grain microstructure and mechanical properties of high-strength aluminum alloys during LPBF.
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    A 3D/OD cobalt-embedded nitrogen-doped porous carbon/supramolecular porphyrin magnetic-separation photocatalyst with highly efficient pollutant degradation and water oxidation performance

    Lufang NingJing XuYang LouChengsi Pan...
    53-64页
    查看更多>>摘要：A 3D/0D cobalt-embedded nitrogen-doped porous carbon nanocubes(Co-N-C)/supramolecular tetra(4-carboxylphenyl)porphyrin nanocrystals(SA-TCPP)photocatalyst was successfully self-assembled via π-πinteraction,hydrogen bonding,and chemical bonding.Co-N-C/SA-TCPP heterostructure exhibited satis-factory visible photocatalytic oxidation performance on pollutant degradation and water evolution.The degradation rates of Co-N-C/ST(30％)composite towards 2,4-dichlorophenol,ofloxacin,and ethylene were 10.9,7.2,and 2.1 times faster than SA-TCPP,respectively.The oxygen evolution efficiency was 1.9 times higher than SA-TCPP.The remarkably improved oxidation activities of Co-N-C/SA-TCPP were mainly as-cribed to the following reasons:(1)Co-N-C could enhance the light absorption ability of SA-TCPP to produce more photoinduced carriers.(2)The well-developed porosity of Co-N-C could optimize the dis-persibility of SA-TCPP to provide more reactive sites and charge separation channels.(3)The π-π in-teraction between SA-TCPP and Co-N-C was beneficial to interlayer charge mobility,while the embed-ded cobalt nanoparticles(Co NPs)and N-doped carbon matrix could serve as electron traps to acceler-ate interfacial electron transfer.Additionally,the ferromagnetic Co NPs endowed Co-N-C/SA-TCPP with magnetic-separation function to promote recyclability in practical application.
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    Wire and arc additive manufacturing of dissimilar 2319 and 5B06 aluminum alloys

    Tianxing ChangXuewei FangGang LiuHongkai Zhang...
    65-75页
    查看更多>>摘要：Aluminum alloy is the most widely used light alloy at present.By combining different types of aluminum alloys,their functional properties can be expanded.In the present research,two components composed of 2319(Al-6.5Cu)and 5B06(Al-6.4Mg)dissimilar alloys were fabricated by wire and arc additive manufac-turing(WAAM).The deposited component with the bottom half of 2319 and the top half of 5B06 exhibits better mechanical properties than its counterpart deposited vice versa.Its ultimate tensile strength,yield strength,and elongation are 258.5 MPa,139.3 MPa,and 5.6％,respectively,which are only slightly inferior to the mechanical properties of 2319 base metal.The results show that for both components,fracture oc-curred at a layer thickness above the interface layer during the tensile test,regardless of the deposition order.It appears that the thermal stress due to the long dwell time and the remelting of the S-Al2CuMg phase are the main factors promoting crack initiation.Depending on the deposition order,cracks prop-agate either along the aggregated pores or strip θ-Al2Cu phase distributed along the grain boundary.By analyzing the heat input and selecting the appropriate depositing order,the strength of WAAM dissimilar aluminum alloys can be effectively improved through the proper control of microstructure and internal defects.
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    "1+1＞2":Highly efficient removal of organic pollutants by composite nanofibrous membrane based on the synergistic effect of adsorption and photocatalysis

    Yuanting XuWanting LinDandan YuanShifan Chen...
    76-85页
    查看更多>>摘要：Adsorption and photocatalysis are regarded as two desirable technologies for wastewater remediation,but are still unsatisfactory in removal effect,eco-friendly regeneration and facile reusability.In this study,we developed a composite nanofibrous membrane material with excellent removal performance for organic pollutants based on synergistic adsorption and photocatalysis.A novel boron-doped,nitrogen-deficient graphitic carbon nitride(B-C3N4)photocatalyst as well as an amphiphilic copolymer of methyl methacry-late and acrylic acid(p(MMA-AA))were synthesized respectively,and then used to modify polyethersul-fone for the fabrication of composite nanofibrous membrane with improved hydrophilicity,negatively-charge property and enhanced visible light response simultaneously.Subsequently,the synergistic effect of adsorption and photocatalytic degradation for organic pollutants were identified especially and re-sulted in an excellent removal efficiency even superior to the combination of adsorption and photocat-alytic degradation,which could be called a"1+1＞2"effect.In addition,the regeneration and reusability,the purification ability for multicomponent wastewater,and the photocatalytic mechanism,were investi-gated and discussed systematically.In this work,we not only prepared the nanofibrous membrane with synergistic effect of adsorption and photocatalysis,but also provided a versatile approach to design dual-functional support material to ensure the practical applications of powdery photocatalyst in wastewater treatment.
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    Corrosion behavior of Ti60 alloy under continuous NaCl solution spraying at 600℃

    Rui LiLi LiuYu CuiRui Liu...
    86-101页
    查看更多>>摘要：The corrosion behavior of Ti60 alloy was investigated under continuous NaCl solution spraying at 600℃.Results indicate that the corrosion rate of the Ti60 alloy is lower than that obtained with the solid NaCl deposit film in H2O+O2.The outer corrosion products are compact layers mainly containing Na2TiO3 and nanocrystalline TiO2.The inner layer is mainly composed of Ti2O,TiO and SnO2.Ti2O has a lamellar struc-ture,and TiO has a strip-shaped structure.A mixed corrosion mechanism including classic oxidation and active oxidation occurred under NaCl solution spraying environment:the first stage was controlled by the classic oxidation mechanism with the promotion by the active oxidation following parabolic curves,and the second stage was controlled by the active oxidation mechanism following a linear rise in the mass gain curve.The mixed corrosion mechanism between classic oxidation and active oxidation produced a relatively dense Ti oxides scale,which decreased the corrosion rate.
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    Inducing the SnO2-based electron transport layer into NiFe LDH/NF as efficient catalyst for OER and methanol oxidation reaction

    Changwu WanJie JinXinyu WeiShizhuo Chen...
    102-108页
    查看更多>>摘要：In an electrocatalyst with a heterointerface structure,the different interfaces can efficiently adjust the catalyst's conductivity and electron arrangement,thereby enhancing the activity of the electrocatalyst.Ultrathin and smaller NiFe LDH was successfully constructed on the surface of SnO2 nanosheet supported NF by layer by layer assembly,and exhibits lower overpotential of 234 mV at a current density of 10 mA cm 2,which only increases by 6.4％even at a high current density of 100 mA cm-2.The excellent OER activity of catalyst is attributed to the contribution of the semiconductor SnO2 electron transport layer.Through experiments and characterization,3d structure SnO2 nanosheets control the growth of ultra-thin nickel-iron,the hierarchical interface between SnO2 and NiFe LDH can change the electron arrangement around the iron and nickel active centers at the interface,resulting the valence states of iron slightly in-creased and Ni3+content increased.The result will promote the oxidation of water.Meanwhile,the SnO2 semiconductor as electron transport layer is conducive to trapping electrons generated in oxidation reac-tion,promoting electrons transferring from the NiFe LDH active center to the Ni substrate more quickly,and enhance the activity of NiFe LDH.It also shows excellent activity in an electrolyte solution containing 0.5 M methanol and 1 M KOH,and only 1.396 V(vs.RHE)is required to drive a current density of 10 mA cm-2
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    Comparing hydrogen embrittlement behaviors of two press hardening steels:2 GPa vs.1.5 GPa grade

    Z.H.CaoB.N.ZhangM.X.Huang
    109-115页
      原文链接:
    • 维普
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