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TiNb顆粒增韌銅鋯基非晶復(fù)合材料的機(jī)制
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國(guó)家自然科學(xué)基金（50771063）


Toughening Mechanism of Zr-Based and Cu-Based Bulk Metallic Glasses Composites by TiNb Particle
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    摘要:

    采用放電等離子燒結(jié)(Spark Plasma Sintering, SPS)方法成功制備得到10%（體積分?jǐn)?shù)）TiNb/Zr55Cu30Al10Ni5和TiNb/Cu46Zr42Al7Y5非晶基體復(fù)合材料。壓縮力學(xué)實(shí)驗(yàn)表明，TiNb顆粒對(duì)Zr55Cu30Al10Ni5的增韌效果明顯好于對(duì)Cu46Zr42Al7Y5。究其原因是Zr55Cu30Al10Ni5的塑性轉(zhuǎn)變區(qū)域的長(zhǎng)度Rp值高于Cu46Zr42Al7Y5，這就意味著TiNb顆粒分布在Zr55Cu30Al10Ni5的塑性轉(zhuǎn)變區(qū)域的幾率明顯高于Cu46Zr42Al7Y5基體。因此，TiNb顆粒對(duì)Zr55Cu30Al10Ni5基體的增韌效果明顯要好于Cu46Zr42Al7Y5。

    Abstract:

    TiNb/Zr55Cu30Al10Ni5 and TiNb/Cu46Zr42Al7Y5 bulk metallic glass composites were prepared by Spark Plasma Sintering (SPS). The compression results show that TiNb/Zr55Cu30Al10Ni5 composites get larger plasticity than TiNb/Cu46Zr42Al7Y5 composites. The reason is that Zr55Cu30Al10Ni5 bulk metallic glass is resistant to micro-crack. The fracture toughness test proves that KC of Zr55Cu30Al10Ni5 is higher than that of Cu46Zr42Al7Y5, so there is a larger length scale of plastic process zone Rp for Zr55Cu30Al10Ni5.

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褚振華,袁廣銀,加藤秀實(shí),丁文江. TiNb顆粒增韌銅鋯基非晶復(fù)合材料的機(jī)制[J].稀有金屬材料與工程,2013,42(6):1154~1158.[Chu Zhenhua, Yuan Guangyin, Kato Hidemi, Ding Wenjiang. Toughening Mechanism of Zr-Based and Cu-Based Bulk Metallic Glasses Composites by TiNb Particle[J]. Rare Metal Materials and Engineering,2013,42(6):1154~1158.]
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  • 收稿日期:2012-06-10
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