摘要
采用原位反应法制备(ZrB2+Al3Zr)/ZL101原位复合材料,测试其室温力学性能,并通过OPM、TEM观察其显微组织。结果表明,原位复合材料经过热处理后,抗拉强度、伸长率以及布氏硬度分别提高了35.5%、12.2%、25.5%。原位复合材料增强相ZrB2和Al3Zr弥散分布在α-Al中,Al3Zr呈棒状,几乎与α-Al完全共格;ZrB2呈粒状。(ZrB2+Al3Zr)/ZL101原位复合材料强韧化的主要机制是细晶强化和弥散强化。
In-situ composite of （ZrB2＋Al3Zr）/ZL101 was prepared by solid-liquid reaction method, The mechanical properties at room temperature were tested and the microstructure was observed by OPM and TEM. The results show that the tensile strength, elongation and hardness CRIB） of the in-situ composite increase by 35.5%,12.2% and 25.5% respectively after heat treatment .The reinforcement phases （ZrB2 and Al3Zr） are dispersed in the matrix of α-Al, Al3Zr is rod and almost completes coherent with α-Al, ZrB2 has granular shape. The main reinforcement mechanism of the in-situ composite of （ZrB2＋Al3Zr）/ZL101 is fine-grain intensification and dispersion intensification.
出处
《热加工工艺》
CSCD
北大核心
2008年第4期20-22,共3页
Hot Working Technology
基金
陕西教育厅基金资助项目(06JK280)
关键词
原位复合材料
力学性能
增强相
显微组织
in-situ composite
mechanical properties
reinforcement phase
microstructure
