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Zr-Sn-Nb合金焊接接頭的應(yīng)變疲勞特性
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Strain Fatigue Property of Zr-Sn-Nb Welding Fittings
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    摘要:

    采用板材試樣，研究了Zr-Sn-Nb合金焊接接頭在室溫和375 ℃溫度下的應(yīng)變疲勞行為并和光滑樣品進(jìn)行了比較。結(jié)果表明，焊接試樣的疲勞壽命不足光滑試樣的一半，無(wú)論是在室溫還是375 ℃，縱向試樣的疲勞性能明顯優(yōu)于橫向試樣；其循環(huán)塑性應(yīng)變幅與疲勞壽命之間遵循Coffin-Manson關(guān)系；焊接接頭在不同溫度和應(yīng)變條件系，表現(xiàn)出不同的循環(huán)變形特征。觀察了焊接樣品的形貌，分析了斷口特征。

    Abstract:

    The strain fatigue property of the welding fittings of Zr-Sn-Nb alloy plates was investigated both at room temperature and 375 ℃, and also we compared that with the smoothed samples. The results showed that the fatigue life of welding samples was less than half of that of the smoothed samples. The fatigue property of longitudinal samples was obviously better than that of transverse samples both at room temperature and 375 ℃. The cycle plastic strain range and the fatigue life followed the Coffin-Manson relation. The cycle- deformation property of the welding fittings differed at different temperature and strains. The microstructure and the fatigue crack were also investigated.

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田 鋒,李中奎,張建軍,周 軍,石明華,王旭峰,王文生. Zr-Sn-Nb合金焊接接頭的應(yīng)變疲勞特性[J].稀有金屬材料與工程,2011,40(12):2188~2192.[Tian Feng, Li Zhongkui, Zhang Jianjun, Zhou Jun, Shi Minghua, Wang Xufeng, Wang Wensheng. Strain Fatigue Property of Zr-Sn-Nb Welding Fittings[J]. Rare Metal Materials and Engineering,2011,40(12):2188~2192.]
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  • 收稿日期:2011-04-12
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