Al-3%Fe-3%Ni-3%Cr-0.7%ZrP/M合金のメカニカルグラインデング処理による高度強化 Strenghtening of Al-3%Fe-3%Ni-3%Cr-0.7%ZrP/M alloy by mechanical grinding

この論文にアクセスする

この論文をさがす

著者

抄録

Mechanical grinding (MG) of air atomized Al–3Fe–3Ni–3Cr–0.7Zr (in mass%) alloy powder was performed with a vibrational ball mill for various times up to 154.8 ks in an argon atmosphere. Subsequently, MG powders as well as atomized powder were hot extruded to rectangular bar shapes (20 mm in width and 3.5 mm in thickness) at 673 K. The effect of MG time on the mechanical properties of extrudates up to 673 K and on the microstructures of MG powders and extrudates was investigated. Vickers hardness of MG powders increased to about 300 with increasing of MG time up to about 30 ks. The results of DSC, XRD and TEM revealed that the primary intermetallic compounds in atomized powder were finely ground and dispersed by MG. The results also suggest that elements consisting of the compounds were dissolved in the matrix beyond their equilibrium solubility by prolongation of MG time. MG and subsequent hot extrusion processes at 673 K resulted in giving extremely fine sub-grains. On boundaries or interior of the sub-grains, the transition elements dissolved in the matrix by MA were precipitated finely as Al<sub>3</sub>Fe, Al<sub>3</sub>Ni and Al<sub>13</sub>Cr<sub>2</sub> phase particles. The tensile strength at ambient temperature and at 573 K were about 431.9 MPa and 208.7 MPa for extrusion specimen from atomized powder, and 675.7 MPa and 281 MPa for extrusion specimen from 154.8 ks-MG powder, respectively. However, the ductility was poor in MG materials. Improvements in the mechanical strength are mainly attributed to the presence of extremely fine sub-structure and finely dispersed particles which were introduced during MG and extrusion process.

収録刊行物

  • 軽金属  

    軽金属 48(12), 629-634, 1998-12-30 

    The Japan Institute of Light Metals

参考文献:  24件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  2件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002665649
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4629143
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ