The effects of nanosized particles on microstructural evolution of an in-situ TiB2/6063Al composite produced by friction stir processing
The effects of nanosized particles on microstructural evolution of an in-situ TiB2/6063Al composite produced by friction stir processing
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纳米颗粒对搅拌摩擦加工原位 TiB2/6063Al 复合材料微观结构演变的影响
DOI：
10.1016/j.matdes.2015.09.127
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发表时间：
2015-12
影响因子：
8.4
通讯作者：
陈哲
中科院分区：
文献类型：
--
作者：
陈哲
采用搅拌摩擦工艺（FSP）制备了细晶原位AA 6063/TiB 2复合材料，实现了纳米TiB 2颗粒的均匀再分布。采用中子衍射、扫描电镜结合电子背散射衍射和同步辐射X射线线形分析等方法，定量评价了TiB 2颗粒对熔核区变形组织及T6热处理后熔核热稳定性的影响。结果表明，与FSPed AA 6063合金相比，FSPed AA 6063/TiB 2复合材料的平均晶粒尺寸更小，晶粒尺寸分布更均匀。第二，在FSPed AA 6063/TiB 2复合材料中估计的位错密度高于FSPed AA 6063合金。第三，与相应的合金相比，在FSP处理的AA 6063/TiB 2复合材料中有少量的晶粒发生动态再结晶，这表明纳米TiB 2颗粒的存在有效地抑制了FSP和T6热处理过程中的再结晶和晶粒长大。
The homogenous redistribution of nanosized TiB2particles in a fine-grainedin-situAA6063/TiB2composite has been achieved by friction stir processing (FSP). The effects of TiB2particles on as-deformed structure in the nugget zone and its thermal stability after additional T6 heat treatment are quantitatively evaluated by using neutron diffraction, scanning electron microscopy associated with electron backscatter diffraction and synchrotron X-ray line profile analysis. The results are compared to those obtained from a FSPed AA6063 alloy and, show first that, average grain size of the FSPed AA6063/TiB2composite is smaller than that of the FSPed AA6063 alloy, while grain size distribution is more uniform. Second, dislocation density estimated in the FSPed AA6063/TiB2composite is higher than that in the FSPed AA6063 alloy. Third, a small number of grains are dynamically recrystallized in the FSPed AA6063/TiB2composite compared to its alloy counterpart, which indicates that recrystallization and grain growth during FSP and T6 heat treatment are effectively inhibited by the presence of nanosized TiB2particles.
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影响因子：
9.4
作者：
Barlow, CY;Hansen, N;Liu, YL
通讯作者：
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DOI：
10.1016/j.msea.2005.06.009
发表时间：
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影响因子：
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DOI：
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DOI：
10.1016/j.msea.2008.08.007
发表时间：
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影响因子：
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