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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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    Design of ultrahigh strength Al-Zn-Mg-Cu alloys through a hybrid approach of high-throughput precipitation simulation and decisive experiment

    Ya LiXiaoyu ZhengYuling LiuYi Kong...
    234-247页
    查看更多>>摘要：The development of new engineering alloy chemistries and heat treatments is a time-consuming and iterative process.Here,a hybrid approach of the high-throughput precipitation simulations and deci-sive experiments is developed to optimize the composition and manipulate the microstructure of Al-Zn-Mg-Cu alloys to achieve the expected yield strength and elongation.For that purpose,a multi-class Kampmann-Wagner numerical(KWN)framework is established and the contributions to precipitation ki-netics and strength from primary phases and precipitates formed before age hardening are introduced for the first time.The composition/process-structure-property relationship of Al-Zn-Mg-Cu alloys is pre-sented and discussed in detail.Coupled with thermodynamic calculations,two concentration-optimized Al-Zn-Mg-Cu alloys with expected high yield strength and long elongation are designed,prepared,and characterized.The excellent strength and elongation of the designed alloys and the good agreement be-tween the measured and model-predicted mechanical properties for these two alloys underscores the remarkable predictive power of the presently developed material design strategy.This work establishes a novel material design strategy for rapidly exploring the compositional space and investigating the effects of composition and heat treatment on the microstructure and performance of ultrahigh strength Al alloys and other materials.
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    Porous Ti3SiC2 ceramics with improved osteogenic functions via biomineralization as load-bearing bone implants

    Qian XuShuze WangYun BaiQiang Wang...
    248-259页
    查看更多>>摘要：Ti3SiC2 ceramics exhibit excellent mechanical properties and good biocompatibility,rendering them promising bone substitutes for load-bearing conditions.However,the bone integration and osteogenic ability of Ti3SiC2 ceramics remain unclear.Herein,porous Ti3SiC2 ceramics were prepared and systemati-cally investigated as bone scaffolds.The Ti3SiC2 scaffolds with a porosity of 62.9％±2.5％showed high compressive strength～68.12±4.33 MPa.Silicon hydroxyl groups formed on the surface of Ti3SiC2 after soaking in simulated body fluid,which played a critical role in the apatite mineralization of the scaffolds.Biomineralization of Ti3SiC2 scaffolds was found when implanted subcutaneously in the rat dorsum for 2 weeks,demonstrating good osteogenesis ability.The apatite mineralization of the Ti3SiC2 scaffold facili-tated the polarization of RAW264.7 cells from M1 to M2 phenotype,which also promoted the differen-tiation of MC3T3-E1 cells.The porous Ti3SiC2 scaffolds improved osteointegration and bone regeneration after implantation in rabbit femoral defects.Impressively,the number of the newly formed trabeculae in the Ti3SiC2 group was three times of the control group after implantation for 8 weeks,showing excel-lent bone defect repair.This work demonstrates that Ti3SiC2 implants with improved biological functions likely via in-situ biomineralization are promising candidates for bone regeneration.
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