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冷旋壓-熱處理對(duì)亞共析鈾鈮合金顯微組織的影響
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中國(guó)工程物理研究院雙百人才基金（雙2008-6）


Effect of Cold-Spinning and Heat Treatment on the Microstructure of Sub-Eutectoid U-Nb Alloys
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    摘要:

    在室溫條件下用正旋壓工藝對(duì)一種管狀亞共析U-Nb合金施加減薄率為15%的變形。然后分別在700、655和600 ℃進(jìn)行真空退火處理。采用光學(xué)金相(OM)、掃描電鏡(SEM)和XRD研究了冷旋壓及不同溫度退火引起的顯微組織變化。結(jié)果表明：冷旋壓變形通過(guò)機(jī)械破碎使原始組織得到細(xì)化。700 ℃退火后得到棒狀珠光體組織，655 ℃退火得到層片狀珠光體組織，600 ℃退火得到粒狀珠光體組織。

    Abstract:

    The sub-eutectoid U-Nb alloy tube was spun with reduction ratio of 15% at room temperature. The samples sectioned from the spun tube were annealed at 700, 655 and 600 ℃ in the vacuum for 1 h, respectively. The effects of cold-spinning and different temperature annealing on the microstructure evolution were studied by means of optical metallography(OM), scanning electron microscopy(SEM) and X-ray diffraction (XRD). The results indicate that cold-spinning deformation can refine the initial microstructure by mechanical breaking. The alloy after different-temperature annealing had different α+γ binary phase pealite microstructure, i.e. particle-like at 600 ℃, layer-like at 655 ℃ and stick-like at 700 ℃.

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張新建,汪小琳,羅 超,周南強(qiáng).冷旋壓-熱處理對(duì)亞共析鈾鈮合金顯微組織的影響[J].稀有金屬材料與工程,2009,38(8):1414~1417.[Zhang Xinjian, Wang Xiaolin, Luo Chao, Zhou Nanqiang. Effect of Cold-Spinning and Heat Treatment on the Microstructure of Sub-Eutectoid U-Nb Alloys[J]. Rare Metal Materials and Engineering,2009,38(8):1414~1417.]
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  • 收稿日期:2008-07-28
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