晶须增强Al－8．5Fe－1．3V－1．7Si复合材料及晶须增强效果的评价  

PREPARATION OF WHISKER REINFORCED Al-8.5Fe--1.3V-1.7Si COMPOSITES AND APPRAISAL OF REINFORCING BEHAVIOUR FOR VARIOUS WHISKERS

作　　者：马宗义[1] 宁小光[1] 潘进[2] 李吉红[3] 吕毓雄[3] 毕敬[3] 

机构地区：[1]中国科学院金属研究所固体原子像开放实验室 [2]国防科学技术大学 [3]中国科学院金属研究所固体原子像开放实验室

出　　处：《金属学报》1994年第9期B420-B426,共7页Acta Metallurgica Sinica

基　　金：国家"863"计划及辽宁省博士科研起动基金

摘　　要：采用粉末冶金法在较高的温度下制备了ＳｉＣ，Ｓｉ_３Ｎ_４和Ａｌ_（１８）Ｂ_４Ｏ_（３３）晶须增强Ａｌ－８．５Ｆｅ－１．３Ｖ－１．７Ｓｉ耐热铝合金复合材料，山于采用不含Ｍｇ的基体避免了Ａｌ_（１８）Ｂ_４Ｏ_（３３）晶须界面上出现界面反应和Ｓｉ_３Ｎ_４，ＳｉＣ晶须界面上出现的界面生成物，所以所有晶须界面都是清洁的．加入晶须可以明显提高材料的强度和模量，三种晶须的增强效果依次为ＳｉＣ，Ｓｉ_３Ｎ_４和Ａｌ_（１８）Ｂ_４Ｏ_（３３）．这类复合材料的强度随温度的升高呈线性下降。Various whiskers, SiC, Si_3N_4 and Al_(18)B_4O_(33),reinforced Al-8.SFe1 .3V-1 .7Si alloy composites have been prepared by the P / M technique at elevated temperature. The interfacial reaction at the Al_(18)B_4O_(33) interfaces and interfacial reaction product at the SiC or Si_3N_4 interfaces were avoided by employing the alloy matrix without Mg. The strength and modulus of the composites may be obviously improved by incorporating the whiskers in effective sequence:SiC, Si_3N_4 and Al_(18)B_4O_(33). The strength of thess compositeswill linearly drop with increasing temperature, yet their service temperature seems to be 50-100 ℃ higher than that of SiCw / 2024Al composite.

关 键 词：铝基复合材料 晶须 增强 

分 类 号：TB331[一般工业技术—材料科学与工程]