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Mo對(duì)Zr-Fe-Cr合金力學(xué)性能的影響
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反應(yīng)堆燃料及材料重點(diǎn)實(shí)驗(yàn)室基金（9140C700402）


Effect of Molybdenum on the Mechanical Properties of Zr-Fe-Cr Alloy
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    摘要:

    采用非自耗真空電弧熔煉方法制備Zr-0.4Fe-1.0Cr-xMo (x=0，0.2，0.4，0.6)合金材料，研究了該鋯合金在室溫下及350 ℃下的拉伸性能。Zr-0.4Fe-1.0Cr-xMo合金的強(qiáng)度高于Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr合金。室溫下，合金的抗拉伸強(qiáng)度隨著Mo含量的增加而降低，而350 ℃下，合金的抗拉伸強(qiáng)度隨著Mo含量的增加而升高，Mo 對(duì)Zr-0.4Fe-1.0Cr合金有明顯的高溫強(qiáng)化作用。形變強(qiáng)化指數(shù)n值隨Mo含量的變化趨勢(shì)與屈服強(qiáng)度的變化趨勢(shì)相反。Mo含量對(duì)Zr-0.4Fe-1.0Cr-xMo合金拉伸性能的影響與Mo的添加引起第二相粒子特征的變化密切相關(guān)

    Abstract:

    The Zr-0.4Fe-1.0Cr-xMo alloys were prepared by vacuum arc melting method, and its tensile properties at room temperature and 350 °C were measured. Results show that the tensile strengths of Zr-0.4Fe-1.0Cr-xMo alloys are higher than that of Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr alloy. With the increase of Mo content, the tensile strength decreases at room temperature whereas increases at 350 ℃, which indicates the strengthening effect of Mo on Zr-0.4Fe-Cr alloy at high temperature. The variation of the strain hardening exponent n-value with Mo content is opposite to that of the yield strength. The effect of Mo on tensile properties is related to the change of second phase particles characteristics due to Mo addition.

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韋天國,龍沖生,欒佰峰,王 雯,陳 樂,劉云明. Mo對(duì)Zr-Fe-Cr合金力學(xué)性能的影響[J].稀有金屬材料與工程,2013,42(12):2553~2557.[Wei Tianguo, Long Chongsheng, Luan Baifeng, Wang Wen, Chen Le, Liu Yunming. Effect of Molybdenum on the Mechanical Properties of Zr-Fe-Cr Alloy[J]. Rare Metal Materials and Engineering,2013,42(12):2553~2557.]
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  • 收稿日期:2012-12-24
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