摘要
用 OM及 TEM对 Al3Ti· Al N/ZL 10 1及 Al3Ti/ZL 10 1原位复合材料的微观结构进行了研究 ,并测试了试验材料的力学性能。通过综合分析微观结构对力学性能的影响 ,探讨了原位复合材料的增强机制。研究结果表明 :原位复合材料中由于 0 .5μm左右增强相的存在 ,使基体及共晶硅的晶粒明显细化 ;增强相均匀弥散地分布于α- Al晶粒内部 ,对α- Al有强烈的细化作用 ;复合增强体强化的原位复合材料 Al3Ti· Al N/ZL 10 1比单一增强体强化的原位复合材料Al3Ti/ZL 10 1及基体材料 ZL 10 1有更好的力学性能。
The microsturcture of Al 3Ti·AlN/ZL101 and Al 3Ti/ZL101 in situ composite has been studied by means of analysis of OM and TEM method.The mechanical properties of in situ composite have been tested and then,the reinforcing mechanism of the composite has also been studied.The experimental results show that the average grain size of reinforcing phase in these composite is about 0.5 μm which is distributed in the matrix uniformly and it can fine the α Al crystal greatly.The tensile strength of Al 3Ti·AlN/ZL101 in situ composite is greater than that of Al 3Ti/ZL101 in situ composite.The reinforcing mechanism of these in situ composite is fine crystal reinforcing and dispersal reinforcing.
出处
《热加工工艺》
CSCD
北大核心
2001年第3期13-15,共3页
Hot Working Technology
关键词
原位复合材料
增强机制
显微组织
力学性能
in situ composite
reinforcing mechanism
microsturcture
mechanical properties
