Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第8卷    第2期    总第27期    1998年6月

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文章编号:(1998)02-259-5
原位TiC颗粒增强Al-Cu复合材料的组织及性能
刘金水    肖汉宁    舒    震    项品峰

(湖南大学机械与汽车工程学院,长沙 410082)

摘 要:     以Ti, Al和C粉末为原料, 采用接触反应法制备原位TiC颗粒增强的铸造 Al-Cu复合材料, 研究了反应温度对反应产物的影响, 探讨了TiC颗粒的形成机制。 结果表明,随着反应温度的升高,副产物TiAl3和 Al4C3生成的可能性减小;当反应 温度为900 ℃时, 反应副产物全部转变为TiC, 且原位反应生成0.5~1.5μm的TiC 颗粒均布于α-Al 基体中; TiC的加入能显著提高基体的强度, 特别是高温强度, 但使其延伸率有所下降。

 

关键字:     原位反应    TiC颗粒    金属基复合材料    铸造铝铜合金

MICROSTRUCTURE AND PROPERTIES OF IN-SITU SYNTHESIZED TiC PARTICULATE REINFORCED Al-Cu COMPOSITE
Liu Jinshui, Xiao Hanning, Shu Zhen and Xiang Pinfeng

Institute of Mechanical and Automotive Engineering,
Hunan University, Changsha 410082, P. R. China

Abstract:The TiC reinforced Al-Cu composite was prepared by in-situ contact-reaction. The effect of temperature on in situ reaction and formation mechanism of TiC particles have been studied. It is shown that the formation possibility of TiAl3 and Al4C3 decreases with the increase of the reaction temperature and all reaction by-products change into TiC at 900 ℃. TiC(0.5~1.5 μm ) particles formed by in-situ reaction are dispersed in α-Al matrix homogeneously. The addition of TiC particles improves the mechanical properties of matrix at room temperature and especially at elevated temperatures. However, the elongation decreases somewhat.

 

Key words:     in-situ reaction    TiC particles    metal matrix composite    as-cast Al-Cu alloy

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

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

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