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金属学报  2004, Vol. 40 Issue (6): 647-    
  论文 本期目录 | 过刊浏览 |
机械研磨形成W颗/La55Al25Cu10Ni5Co5金属玻璃基复合材料
张晓强 徐 坚
中国科学院金属研究所沈阳材料科学国家(联合)实验室; 沈阳 110016
Formation of W Particles /La55Al25Cu10Ni5Co5 Glassy Alloy Matrix Composites By Mechanical Milling
ZHANG Xiaoqiang; XU Jian
Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016
引用本文:

张晓强; 徐; 坚 . 机械研磨形成W颗/La55Al25Cu10Ni5Co5金属玻璃基复合材料[J]. 金属学报, 2004, 40(6): 647-.
, , . Formation of W Particles /La55Al25Cu10Ni5Co5 Glassy Alloy Matrix Composites By Mechanical Milling[J]. Acta Metall Sin, 2004, 40(6): 647-.

全文: PDF(21857 KB)  
摘要: 利用X射线衍射、透射电子显微镜和差示扫描量热计分析表征了La55Al25Cu10Ni5Co5合金及其添加W颗粒后高能球磨产物的结构与相转变. 由数个金属间化合物构成的La55Al25Cu10Ni5Co5合金经过机械研磨可转变为与熔体过冷形成的金属玻璃相类似的 玻璃态合金, 过冷液态温度区间的宽度可达到76 K. 合金与W颗粒(体积分数10%---30%)的混和物机械研磨后, 形成W纳米颗粒弥散分布于La基玻璃态合金基体上的复合材料. 随着W含量的增加, 基体合金的玻璃转变温度和晶化起始温度均提高.
关键词 机械合金化非晶态合金玻璃转变La合金    
Abstract:Prealloyed powders of La55Al25Cu10Ni5Co5 and its mixtures with tungsten particles were subjected to a high—energy ball milling. Structural evolution in the milled products was characterized using X--ray diffraction, transmission electron microscopy and differential scanning calorimetry. Mechanical milling of La55Al25Cu10Ni5Co5 alloy consisting of several intermetallics results in a formation of glassy alloy similarto that obtained by melt undercooling. The La--based glassy alloy formed by ball milling exhibits a well--defined glass transition and wide supercooled liquid region.
Key wordsmechanical alloying    amorphous alloy    glass transition    lanthanum alloy
收稿日期: 2003-06-17     
ZTFLH:  TB383  
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