氧化物/不锈钢梯度复合材料的制备及其性能
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摘要
采用粉末层叠和整体热压烧结的方法,制备了Y_2Ti_2O_7/316L不锈钢功能梯度复合材料。经金相显微镜、X射线衍射仪和电子探针分析确定,该材料在金属和氧化物界面处实现了成分和微观组织的梯度过渡。对具有不同梯度含量的复合材料的力学性能测试表明,界面处的力学性能存在相应的梯度变化,即随各层金属相含量的逐渐增加,过渡区材料的致密度、抗弯强度不断提升,而硬度则不断下降。
Y_2Ti_2O_7/316L stainless steel functionally graded composites were fabricated through powder lamination and hot-press sintering process.The microstructure and mechanical properties were investigated.The observations of optical microscopy,X-ray diffractometry,and electron probe microanalysis all confirm the formation of compositional and microstructural gradients in the transition region between the metal and oxide halves.Some mechanical properties of the graded composite were also preliminarily evaluated by the corresponding mechanical testing of homogeneous composite samples with different volume fractions of Y_2Ti_2O_7.The results suggest that mechanical properties vary in the same gradient of composition and microstructure,that is,the relative density and bending strength increase gradually,while the Vickers hardness decreases gradually with the increase of the metal content in the transition region.
Y_2Ti_2O_7/316L stainless steel functionally graded composites were fabricated through powder lamination and hot-press sintering process.The microstructure and mechanical properties were investigated.The observations of optical microscopy,X-ray diffractometry,and electron probe microanalysis all confirm the formation of compositional and microstructural gradients in the transition region between the metal and oxide halves.Some mechanical properties of the graded composite were also preliminarily evaluated by the corresponding mechanical testing of homogeneous composite samples with different volume fractions of Y_2Ti_2O_7.The results suggest that mechanical properties vary in the same gradient of composition and microstructure,that is,the relative density and bending strength increase gradually,while the Vickers hardness decreases gradually with the increase of the metal content in the transition region.
引文
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[2]Nguyen S T,Nakayama T,Suematsu H et al.Journal of the European Ceramic Society[J],2015,35(9):2651
[3]Pavitra E,Raju G,Yu J S.Physica Status Solidi(RRL)-Rapid Research Letters[J],2013,7(3):224
[4]Nguyen S T,Nakayama T,Suematsu H et al.Ceramics International[J],2016,42(9):11 314
[5]He L F,Shirahata J,Nakayama T et al.Scripta Materialia[J],2011,64(6):548
[6]W?sche R,Steinborn G.Wear[J],2014,315(1):11
[7]Jiang Y,Smith J R,Odette G R.Acta Materialia[J],2010,58(5):1536
[8]Odette G R,Alinger M J,Wirth B D.Annu Rev Mater Res[J],2008,38:471
[9]Yang L,Jiang Y,Wu Y et al.Acta Materialia[J],2016,103:474
[10]Lu Chenyang(卢晨阳),Lv Zheng(吕铮),Yu Liang(余亮)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2016,45(2):454
[11]Gill J K,Pandey O P,Singh K.International Journal of Hydrogen Energy[J],2011,36(22):14 943
[12]Vaidya R U,Rangaswamy P,Bourke M A M et al.Acta Materialia[J],1998,46(6):2047
[13]Mishina H,Inumaru Y,Kaitoku K.Materials Science and Engineering A[J],2008,475(1):141
[14]Zou Jianpeng(邹俭鹏).Dissertation for Doctorate(博士论文)[D].Changsha:Central South University,2005
[15]Sun L,Sneller A,Kwon P.Materials Science and Engineering A[J],2008,488(1):31
[16]Kieback B,Neubrand A,Riedel H.Materials Science and Engineering A[J],2003,362:81
[17]Jin X,Wu L,Sun Y et al.Materials Science and Engineering A[J],2009,509(1):63
[18]Zhu J,Lai Z,Yin Z et al.Materials Chemistry and Physics[J],2001,68(1):130
[19]Zhu J C,Yin Z D,Lai Z H.Journal of Materials Science[J],1996,31(21):5829
[20]Li J Q,Zeng X R,Tang J N et al.Journal of the European Ceramic Society[J],2003,23(11):1847
[21]He Z,Ma J,Tan G E B.Journal of Alloys and Compounds[J],2009,486(1):815
[22]Jung Y G,Choi S C,Oh C S et al.Journal of Materials Science[J],1997,32(14):3841
[23]Watanabe R,Kawasaki A.Journal of the Japan Society of Powder and Powder Metallurgy[J],1992,39(4):279
[24]Wan Qian(万千),Ruan Jianming(阮建明),Zou Jianpeng(邹俭鹏)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2005,15(12):1888
[25]Jung Y G,Choi S C.J Kor Ceram Soc[J],1994,31:321
[26]Xu Jinfu(徐金富),Zhang Xuebin(张学彬),Fei Youjing(费有静)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2007,17(6):934
[27]Jin X,Wu L,Sun Y et al.Materials Science and Engineering A[J],2009,509(1):63