Nanomechanical behaviour of Al-Ti layered composites produced by accumulative roll bonding
Nanomechanical behaviour of Al-Ti layered composites produced by accumulative roll bonding
复制标题
累积辊压接合 Al-Ti 层状复合材料的纳米力学行为
DOI：
10.1088/1742-6596/240/1/012108
复制
发表时间：
2010
影响因子：
3.3
通讯作者：
M. Göken
中科院分区：
文献类型：
--
作者：
V. Maier;H. Höppel;M. Göken
在这项研究中，钛箔辊压粘合在一起的商业纯铝AA 1050。通过在堆叠的外侧使用两个1 mm厚的AA 1050片材与100 μm厚的Ti箔组合作为每个累积辊压结合工艺的中间层来生产层压件。将样品滚动至4个ARB循环。随后，将片材分别在180°C、400°C或600°C下进行后加工热处理24小时。用纳米压痕实验研究了Al/Ti金属间化合物界面的局部力学行为。退火温度、退火时间与变形程度之间存在很强的相关性。虽然在180°C下的热处理仅导致Al和Ti之间的弱结合并保留UFG结构，但高达600°C的温度导致微观结构的完全再结晶并形成具有不同Al和Ti浓度的扩散层。
In this study Ti-foils were roll bonded together with commercially pure aluminium AA1050. The laminates were produced by using two 1 mm thick AA1050 sheets at the outer side of the stack combined with 100 μm thick Ti-foils as an intermediate layer for each accumulative roll bonding process. The samples were rolled up to 4 ARB cycles. Subsequently the sheets were post-process heat treated at 180°C, 400°C or 600°C, respectively, for 24 hours. The local mechanical behaviour of the Al/Ti intermetallic interfaces have been investigated using nanoindentation experiments. A strong dependence between annealing-temperature, – time and deformation grade is detected. While a heat treatment at 180°C only leads to a weak bonding between Al and Ti with a preservation of the UFG structure, temperatures up to 600°C are causing a complete recrystallisation of the microstructure and formation of diffusion layers with different Al and Ti concentrations.