本文選題：Ti-合金　切入點(diǎn)：攪拌磁場(chǎng)　出處：《稀有金屬材料與工程》2017年10期

【摘要】：研究了工業(yè)化制備的超大規(guī)格Ti-1023合金鑄錠在不同攪拌磁場(chǎng)強(qiáng)度下的縱向凝固組織和Fe元素分布。結(jié)果表明:當(dāng)磁場(chǎng)強(qiáng)度為0.001和0.003 T時(shí),鑄錠組織主要由粗大柱狀晶,竹節(jié)狀的小柱狀晶和等軸晶組成;當(dāng)攪拌磁場(chǎng)強(qiáng)度為0.002 T時(shí),凝固組織轉(zhuǎn)變?yōu)橛纱执笾鶢罹Ш图?xì)小等軸晶組成。Ti-1023合金鑄錠中Fe元素在不同磁場(chǎng)強(qiáng)度下遵循正偏析規(guī)律,沿鑄錠長(zhǎng)度方向Fe元素含量從底部到頂部逐漸增加,沿徑向從邊緣到中心逐漸增加。隨著磁場(chǎng)強(qiáng)度從0.001 T增加到0.003 T,合金元素Fe的宏觀偏析率呈現(xiàn)先減小后增大的趨勢(shì)。
[Abstract]:The longitudinal solidification structure and the distribution of Fe elements in the superlarge size Ti-1023 alloy ingot were studied at different agitation magnetic field intensities. The results showed that when the magnetic field strength was 0.001 and 0.003 T, the ingot structure was mainly composed of coarse columnar crystals. When the agitation magnetic field intensity is 0.002 T, the solidification structure is changed from coarse columnar crystal and fine equiaxed crystal composition. The Fe element in the alloy ingot obeys the normal segregation law under different magnetic field intensity. The content of Fe gradually increases from bottom to top along the length of ingot, and from edge to center along radial direction. With the increase of magnetic field strength from 0.001 T to 0.003 T, the macro segregation rate of Fe decreases first and then increases.
【作者單位】： 西北工業(yè)大學(xué)凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;西部超導(dǎo)材料科技股份有限公司陜西省航空材料工程實(shí)驗(yàn)室;
【分類號(hào)】：TG146.23;TG292
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本文編號(hào)：1662289