Anisotropic behavior of TiB2 nanoparticles reinforced 2024Al composites rolling sheet
Anisotropic behavior of TiB2 nanoparticles reinforced 2024Al composites rolling sheet
复制标题
TiB2纳米粒子增强2024Al复合材料轧制板材的各向异性行为
DOI：
10.1016/j.matchar.2020.110196
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发表时间：
2020-04-01
影响因子：
4.7
通讯作者：
Wang, H. W.
中科院分区：
文献类型：
--
作者：
Li, J. M.;Liu, J.;Wang, H. W.
板材力学性能的面内各向异性（IPA）限制了板材的工业应用，增加了板材加工的难度。因此，这是在制造高性能铝合金板期间需要严格控制的重要因素之一。研究了TiB 2/2024 Al复合轧制板材在不同热处理制度下的各向异性行为。T4热处理试样的屈服强度各向同性较好，织构分量较传统铝合金明显减弱。研究了T4试样的显微组织演变。亚微米TiB_2颗粒增强了轧制过程中再结晶的驱动力，促进了静态再结晶，导致织构随机化。T3热处理后试样的屈服强度出现各向异性。这种各向异性的产生可能是由于不同加载方向下滑移系激活程度的差异。
The in-plane anisotropy (IPA) of mechanical properties existed in plate products is often undesired since it limits the industrial application and increases the difficulty of material processing. It is thus one of the important factors which requires strict control during the manufacture of high-performance aluminum alloy plates. The anisotropic behavior of TiB2/2024Al composite rolling sheet under different heat treatment is studied in this article. T4 heat treated specimen shows good isotropy of yield strength and its texture components are significantly weakened compared with traditional Al alloys. The evolution of microstructures for T4 specimen was studied. The submicron TiB2 particles increase the driving force of recrystallization during rolling process and static recrystallization (SRX) is stimulated, thus induces texture randomization. Anisotropic behavior of yield strength occurs in specimen after T3 heat treatment. It is supposed that the difference in the activation of slip system under different loading direction gives rise to this anisotropy.