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球磨工藝對Mg2B2O5w/6061Al基復合材料微觀組織演變及力學性能的影響
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蘭州理工大學

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中圖分類號:

TB331

基金項目:

國家重點基礎研究發(fā)展計劃（973計劃）


Effect of ball milling on the microstructure and mechanical properties of Mg2B2O5w/6061Al matrix composites
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Affiliation:

Lanzhou University of Technology

Fund Project:

the Fundamental Research Funds for the Central Universities (CHD2012ZD010)

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    摘要:

    采用粉末熱擠壓法制備了硼酸鎂晶須增強鋁基復合材料，對球磨工藝參數(shù)、粉末特性及熱擠壓態(tài)復合材料間的相互關系進行了研究。研究結果表明，在球磨過程中，增強體晶須的添加促進了基體合金的變形，加快了鋁粉顆粒的焊合與斷裂過程的發(fā)生。在球磨過程中，經(jīng)過適當時間的高速球磨后，鋁合金基體晶粒尺寸減小，增強體晶須在基體中的分布得到顯著改善，從而使熱擠壓態(tài)復合材料力學性能得到大幅度的提高。

    Abstract:

    Mg2B2O5w/6061Al matrix composites were fabricated through the powder metallurgy (PM) technique. The relationship among the parameters of ball milling, the powder characteristics, and the mechanical properties of hot extruded composites was investigated. The results showed that the reinforcement whisker accelerated the milling process by increasing the matrix deformation and enhancing the welding and the fracture of particles. And the mixing process was modified by using a higher milling speed, and suitable milling time, which resulted in the reduction of crystal size, improved homogeneity of the whisker distribution, as well as the enhanced tensile strengths of the hot extruded composites.

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馬國俊.球磨工藝對Mg2B2O5w/6061Al基復合材料微觀組織演變及力學性能的影響[J].稀有金屬材料與工程,2016,45(6):1430~1436.[Ma Guojun. Effect of ball milling on the microstructure and mechanical properties of Mg2B2O5w/6061Al matrix composites[J]. Rare Metal Materials and Engineering,2016,45(6):1430~1436.]
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  • 收稿日期:2014-04-17
  • 最后修改日期:2014-05-06
  • 錄用日期:2014-06-04
  • 在線發(fā)布日期: 2016-10-08
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