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旋轉(zhuǎn)摩擦擠壓合金化法制備Al3Ti金屬間化合物
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國(guó)家自然科學(xué)基金（50674056）


Al3Ti Intermetallic Compounds Fabricated by Rotational Extrusion Alloying
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    摘要:

    采用自制旋轉(zhuǎn)摩擦擠壓合金化設(shè)備以純鋁板和純Ti粉為原材料制備了Al-Ti金屬間化合物。利用掃描電子顯微鏡、能譜儀、透射電子顯微鏡以及X射線衍射儀對(duì)合金化產(chǎn)物的微觀組織結(jié)構(gòu)及相組成進(jìn)行了分析，并對(duì)其顯微硬度進(jìn)行了測(cè)量。結(jié)果表明：原材料Al、Ti在摩擦棒的剪切與強(qiáng)烈擠壓力的共同作用下，能夠在固態(tài)下發(fā)生合金化反應(yīng)，生成Al3Ti金屬間化合物相，其晶粒尺寸約為500 nm，且基體鋁中的位錯(cuò)較多，呈卷曲無規(guī)則排列狀態(tài)。合金化產(chǎn)物平均硬度值HV達(dá)到1080 MPa，為原始純鋁硬度的4倍。

    Abstract:

    The Al3Ti intermetallic compound was fabricated with pure Ti powder and aluminum plate as starting materials by self-developed rotational extrusion equipment. The microstructure of the rotational extrusion alloyed product was observed with scanning electron microscopy and energy dispersive spectrometry, the phase constituent of alloying product was inspected by transmission electron microscopy and X-ray diffraction, and the microhardness was measured. The results show that under the interaction effect of the friction stick shearing and extrusion force, the Ti-Al intermetallic compounds can be synthesized by alloying reaction, and the product is Al3Ti phase intermetallic compound. The size of Al3Ti particles is about 500 nm, and the matrix of aluminum presents a large number of dislocations, which are irregular arrangement of curly state. The average microhardness of alloyed product is 1080 MPa, four times that of matrix.

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黃科輝,柯黎明,邢 麗,陳玉華,黃春平.旋轉(zhuǎn)摩擦擠壓合金化法制備Al3Ti金屬間化合物[J].稀有金屬材料與工程,2011,40(10):1812~1816.[Huang Kehui, Ke Liming, Xing Li, Chen Yuhua, Huang Chunping. Al3Ti Intermetallic Compounds Fabricated by Rotational Extrusion Alloying[J]. Rare Metal Materials and Engineering,2011,40(10):1812~1816.]
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  • 收稿日期:2010-10-25
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