Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第10卷    第z1期    总第100期    1999年10月

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文章编号:1004-0609(1999)s1-0194-04
机械合金化Al-V-Fe合金纳米晶粉末的制备及其微观结构
林锦新     庞  华    贾  威    曾梅光

(东北大学理学院材料科学系,沈阳 110006)

摘 要:     通过机械合金化法制备了Al94V4Fe2合金粉末,该粉末由纳米尺寸的fcc-Al相及非晶颗粒组成,两者的尺寸分别为7 nm和10 nm。应用DTA方法检测合金粉末的热稳定性。合金粉末从非平衡相向平衡相转变经历了两个阶段。制备具有非晶颗粒和纳米fcc-Al相共存结构的合金粉末的最佳工艺条件为40∶1的球料比加72 h球磨。

 

关键字: 纳米相合金    Al-V-Fe合金     纳米晶    纳米非晶结构    机械合金化

PREPARATION AND MICROSTRUCTURE OF Al-V-Fe ALLOY BY MECHANICALLY ALLOYING
Lin Jinxin, Pang Hua, Jia Wei and Zeng Meiguang

Department of Materials Science, College of Science, Northeastern University, Shenyang 110006, P. R. China

Abstract:Alloy powder consisting of nanoscale amorphous particles plus fcc-Al phase has been prepared in Al94V4Fe2 by mechanically alloying, the sizes of amorphous and fcc-Al phase particles are about 10nm and 7nm, respectively. The thermal stability of the nanoscale amorphous particles in coexistence with the Al phase was examined by DTA. The phase transition of that non-equilibrium phase transiting into equilibrium mixture appears to take place through two stages, i.e. fcc-Al+amorphous→fcc-Al+quasicrystal+X phase→fcc-Al+Al11V+X' phase. The best processing parameter for achieving amorphous and nanoscale fcc-Al phase mixed powders are 40∶1 ball-to-powder mass ratio plus 72h milling.

 

Key words: nanophase alloy; aluminum; vanadium-iron alloy; nanocrystal; nanoamorphous structure; mechanically alloying

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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