多相强韧化MoSi2基复合材料的制备及性能
Preparation and Performance of MoSi2 Based Composites Reinforced by Multi-phases
摘 要
采用热压烧结技术制备了含有多种强韧相的MoSi2基复合材料,研究了强韧相的数量和含量对复合材料性能的影响;探讨了多相强韧化MoSi2基复合材料的强韧化机理.结果表明:多相强韧的MoSi2基复合材料性能要好于单相强韧的复合材料,而两相强韧复合材料性能要优于三相强韧的;两相强韧的(5%SiC+5%Nb)复合材料综合性能较优;多相复合材料的强化机理主要为各强韧相的细晶强化和弥散强化的复合作用;韧化效应可能是各强韧相的相变韧化、微裂纹、裂纹偏转以及细化晶粒等机制的综合作用结果.
MoSi2基复合材料
多相
强韧化
hot pressure sintering
MoSi2 based composite
multi-phase
strengthening and toughening
Abstract
MoSi2 based composites reinforced by multi-phases were prepared by the hot pressure sintering technique.Influence of the multi-phases number and content on the mechanical properties of the composites were studied,and strengthening and toughening mechanism was investigated.The results indicate that properties of the composites reinforced by multi-phases are better than those reinforced by single phase,those reinforced by two phases are better than those reinforced by three phases,and 5%SiC+5%Nb+MoSi2 composites possess the best comprehensive properties among all the test composites.The strengthening mechanism of the composites reinforced by multi-phases is the corporation of dispersion strengthening and grain refining and the toughening mode may be the integration of phase transition,microcrack,crack deflection and grain refining.
中图分类号 TB332
所属栏目 材料性能及其应用
基金项目
收稿日期 2007/11/26
修改稿日期 2008/4/26
网络出版日期
作者单位点击查看
备注徐金富(1965-),男,浙江余姚人,教授.
引用该论文: XU Jin-fu,CHEN Sheng,WU Hai-fei,WEN Xiao-hao. Preparation and Performance of MoSi2 Based Composites Reinforced by Multi-phases[J]. Materials for mechancial engineering, 2008, 32(12): 72～75
徐金富,陈胜,吴海飞,文小浩. 多相强韧化MoSi2基复合材料的制备及性能[J]. 机械工程材料, 2008, 32(12): 72～75
被引情况:
【1】文小浩,游航,韩小云,丁小芹,张学彬,徐金富, "MoSi2基复合材料的制备及其强韧化机理",机械工程材料 35, 15-18(2011)
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参考文献
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【2】Krakhmalev P V,Strom E,Li C.Microstructure and properties stability of Al-alloyed MoSi2 matrix composites[J].Intermetallics,2004,12:225-233.Dasgupta T,Umarji A M.Thermal properties of MoSi2 with minor aluminum substitutions[J].Intermetallics,2007,15:128-132.
【3】Zakeri M,Yazdani-Rad R,Enayati M H,et al.Synthesis of MoSi2-Al2O3 nanocomposite by mechanical alloying[J].Materials Science and Engineering,2006,430A:185-188.
【4】Meng Junhu,Lu Jinjun.Preparation and properties of MoSi2 composites reinforced by TiC,TiCN,and TiB2[J].Materials Science and Engineering,2005,396A:277-284.
【5】Cook J,Khan A,Lee E,Mahapatra,R J Cook,et al.Oxidation of MoSi2-Based composites[J].Materials Science and Engineering,1991,155(1/2):183-198.
【6】Yi Danqing,Li Changhai.MoSi2-ZrO2 composites-fabrication,microstructures and properties[J].Materials Science and Engineering,1999,261:89-98.
【7】Sun Lan,Pan Jinsheng.Fabrication and characterization of TiC particle reinforced MoSi2 composites[J].European Ceramic Society,2002,22:791-796.
【8】艾云龙,马勤,邓克明,等.ZrO2+SiC颗粒强韧化MoSi2复合材料的显微组织和性能[J].金属热处理学报,2000,21(4):18-21.
【9】Hebsur M G.Development and characterization of SiC(f)/MoSi2-Si3N4 (p) hybrid composites[J].Materials Science and Engineering,1999,261A:24-37.
【10】Roncari E,Pinasco P,Nagliati M,et al.Tape casting of Al-SiC-MoSi2 composites[J].Journal of the European Ceramic Society,2004,24A:2303-2311.
【11】Pavol Hvizdos,Daniel Jonsson.Mechanical properties and thermal shock behaviour of an alumina/zirconia functionally graded material prepared by electrophoretic deposition[J].Journal of the European Ceramic Society,2007,27:1365-1371.
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