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中國有色金屬學報

ZHONGGUO YOUSEJINSHU XUEBAO

第9卷第1期總第30期 1999年3月

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文章編號：1004-0609(1999)01-0097-04

晶須增強鋅鋁合金復合材料拉伸斷口分形

劉越^1,2 李會莉² 翟玉春² 畢敬²

(1 中國科學院金屬研究所，沈陽 110015

2 東北大學材料測試中心， 沈陽 110006)
         
         摘  要:   分析研究了擠壓復合溫度對K₂O·6TiO_2W/ZA-27合金復合材料的拉伸斷口分形維數(shù)的影響規(guī)律及與拉伸斷裂功之間的關系。 研究發(fā)現(xiàn)該復合材料的拉伸斷口具有統(tǒng)計自相似性， 可以用分形維數(shù)來描述， 自相似性的測量步長范圍在0.185～3.750μm之間為最佳。 復合材料拉伸斷口分形維數(shù)同拉伸斷裂功之間有較好的對應關系， 分形維數(shù)隨拉伸斷裂功的增加呈線性增大。
          
         關鍵字: 復合材料   拉伸斷口   分形維數(shù)

ENSILE FRACTAL DIMENSION OF POTASSIUM TITANATE

WHISKER REINFORCED ZA-27 ALLOY COMPOSITES

iu Yue, Li Huili, Zai Yuchun and Bi Jing

（Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, P. R. China
Center of Materials Testing, Northeastern University, Shenyang 110006, P. R. China）

Abstract:The tensile properties were measured by using Instron tensile machine. The fracture surface of K₂O·6TiO_2W/ZA-27 composites was studied by using fractal geometry. The results on fractal dimension of tensile surface showed that the fracture surface of K₂O·6TiO_2w/ZA-27 composites has statistics self-similar property and can be investigated and described by fractal dimension. There exist good corresponding relations between tensile fracture work of composites and fractal dimension of fracture surface. The micro-mechanism of tensile fracture of composites was also discussed.

Key words: composites tensile fracture fractal dimension

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

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