Acta Metall Sin  1997, Vol. 33 Issue (4): 420-426    DOI:

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HARDENNING AND SOFTENNING EFFECTS OF Fe-Cu NANOCRYSTALLINE SUPERSATURATED SOLID SOLUTION FORMED BY MECHANICAL ALLOYING

LI Bolin;ZHU Min; LI Long; LUO Kanchang;LI Zuxin (South China University of Technology; Guangzhou 510641)(Manuscript received 1996-03-19; in revised form 1996-07-15)

LI Bolin;ZHU Min; LI Long; LUO Kanchang;LI Zuxin (South China University of Technology; Guangzhou 510641)(Manuscript received 1996-03-19; in revised form 1996-07-15). HARDENNING AND SOFTENNING EFFECTS OF Fe-Cu NANOCRYSTALLINE SUPERSATURATED SOLID SOLUTION FORMED BY MECHANICAL ALLOYING. Acta Metall Sin, 1997, 33(4): 420-426.

Abstract References Related Articles Recommended Metrics Download:  PDF(638KB)  Export:  BibTeX | EndNote (RIS)       Abstract  In present work nanocrystalline supersaturated solid solutions (NSSS) with bcc and fcc structures were prepared in Fe-rich and Curich compostion of immiscible Fe-Cu system respectively by mechanical alloying. The effects of grain size and composition on the hardness of Fe-Cu NSSS have been studied by X-ray diffraction and Vickers hardness measurement. It has been found that the hardness of NSSS formed in Cu-rich composition increases with the increase of Fe, its solute atom content. On the contrary, the hardness of NSSS formed in Fe-rich composition decreases with the increase in Cu content.The hardenning and softenning caused by the dissolving of Fe and Cu respectively have been discussed based on the structure feature of NSSS and estimation of the strength of grain boundary and crystal components of NSSS. Key words:  mechanical alloying      nanocrystalline materials      supersaturated solid solution      Fe-Cu binary system      Received:  18 April 1997      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1997/V33/I4/420 1 Nieman G W,Weertman J R,Siegel R W.J Mater Res, 1991;6:1012 2 Koch C C, Cho Y S.Nanostruct Mater,1992; 1: 207 3 Lu K,Wei W D,Wang J T.Scr Metall Mater,1990;24:2319 4 Christman T,Jain M.Scr Metall Mater,1991;25:767 5 Nieh T G,Wadseworth.Scr Metall Metaer,1991;25:955 6 Fecht H J.In:Hadjipanayis G C,Siegel R W eds,Nanophase Materials, Klewer Academic publisher,1994: 125 7 Lu K,Sui M L.Scr Metall Mater,1993;28:1465 8 Palumbo G,Thorpe S J,Aust K T.Scr Metall Mater,1990;24:1347 9 Zhu M,Fecht H J.Nanostruct Mater,1995;6:921 10 Uenishi K Kobayashi K F,Nasu S,Hatano H,Ishihara K N,Shingu P H.Z Metallk,1992;83:132 11 Eckert J,Holzer J C,Krill C E, Johnson W L.J Appl Phys,1993;73:2794 12 Yavari A R,Desere P J,Menameur T,Phys Rev Lett,1992;68:2235 13 Ma E, Atzmon M,Pinkerton P E,J Appl Phys,1993;74:955 14 Miedema A R, Broeder F J A. 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