2Ti2O7;不銹鋼; 金屬陶瓷"/> 2Ti2O7/316L不銹鋼功能梯度復合材料。經(jīng)金相顯微鏡、X射線衍射儀和電子探針分析確定,該材料在金屬和氧化物界面處實現(xiàn)了成分和微觀組織的梯度過渡。對不同梯度含量復合材料的力學性能測試表明,界面處的力學性能存在相應的梯度變化,即隨各層金屬相含量的逐漸增加,過渡區(qū)材料的致密度、抗彎強度不斷提升,而硬度則不斷下降。"/>

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氧化物/不銹鋼梯度復合材料初步設計與評價
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中南大學深圳研究院,中南大學深圳研究院,中南大學深圳研究院

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深圳市科技計劃項目(JCYJ20140509142357196),國家自然科學基金面上項目(51471189)


Preliminary design and evaluation of oxide/stainless steel functionally graded materials and their properties
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Shenzhen Research Institute of Central South University,Shenzhen Research Institute of Central South University,Shenzhen Research Institute of Central South University

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    采用粉末層疊和整體熱壓燒結(jié)的方法,制備了Y2Ti2O7/316L不銹鋼功能梯度復合材料。經(jīng)金相顯微鏡、X射線衍射儀和電子探針分析確定,該材料在金屬和氧化物界面處實現(xiàn)了成分和微觀組織的梯度過渡。對不同梯度含量復合材料的力學性能測試表明,界面處的力學性能存在相應的梯度變化,即隨各層金屬相含量的逐漸增加,過渡區(qū)材料的致密度、抗彎強度不斷提升,而硬度則不斷下降。

    Abstract:

    A Y2Ti2O7/316L stainless steel functionally graded composite material was fabricated through powder lamination and hot-press sintering processing, and its microstructure and some mechanical properties were investigated. The observations of optical microscopy, X-ray diffractometry, and electron probe microanalysis all confirmed 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 performing the mechanical testing on homogeneous composite samples with different volume fractions of Y2Ti2O7. The results suggested that some mechanical properties vary in the same gradient of composition and microstructure, i.e. relative density and bending strength increase gradually while Vickers hardness decreases gradually with the increase of metal content in the transition region.

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賀涔,江勇,羅思杰.氧化物/不銹鋼梯度復合材料初步設計與評價[J].稀有金屬材料與工程,2018,47(10):3155~3160.[HE Cen, JIANG Yong, LUO Si Jie. Preliminary design and evaluation of oxide/stainless steel functionally graded materials and their properties[J]. Rare Metal Materials and Engineering,2018,47(10):3155~3160.]
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  • 收稿日期:2016-11-28
  • 最后修改日期:2018-08-02
  • 錄用日期:2017-01-06
  • 在線發(fā)布日期: 2018-11-08
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