Functionally graded aluminum foam fabricated by friction powder sintering process with traversing tool
Functionally graded aluminum foam fabricated by friction powder sintering process with traversing tool
复制标题
横移工具摩擦粉末烧结工艺制备功能梯度泡沫铝
DOI：
10.1007/s11665-016-2218-x
复制
发表时间：
2016
影响因子：
2.3
通讯作者：
Osamu Kuwazuru and Nobuhiro Yoshikawa
中科院分区：
文献类型：
--
作者：
Yoshihiko Hangai;Tomoaki Morita;Shinji Koyama;Osamu Kuwazuru and Nobuhiro Yoshikawa
功能梯度泡沫铝(FG-Al Foam)是一种新型的泡沫铝，其孔结构随泡沫塑料的不同而发生变化，从而导致泡沫铝的力学性能发生相应的变化。在本研究中，在先前开发的烧结和溶解工艺的基础上，使用横移工具，采用摩擦粉末烧结(FPS)工艺制备了FG-Al泡沫板。通过将混合物中氯化钠的体积分数φ设置为60、70和80%，实现了力学性能的变化。在φ沿刀具横移方向变化的情况下，制备了长度等于刀具横移长度的长FG泡沫铝板。X射线CT观察表明，随着φ的增加，泡沫铝的密度降低。相反，在每个区域都获得了几乎均匀的孔结构。根据各区域的压缩试验结果，随着φ的增加，平台应力和能量吸收都有减小的趋势。结果表明，利用横移工具，FPS工艺可以制备出不同力学性能的FG-Al泡沫板。
Functionally graded aluminum foam (FG Al foam) is a new class of Al foam in which the pore structure varies over the foam, resulting in corresponding variations in the mechanical properties of the foam. In this study, FG Al foam plates were fabricated by a friction powder sintering (FPS) process with a traversing tool that is based on a previously developed sintering and dissolution process. The variation of the mechanical properties was realized by setting the volume fractionφof NaCl in the mixture to 60, 70, and 80%. Long FG Al foam plates were fabricated with a length equal to the tool traversing length withφvarying in the tool traversing direction. From x-ray computed tomography observation, it was shown that the density of the Al foam decreased with increasingφ. In contrast, almost uniform pore structures were obtained in each area. According to the results of compression tests on each area, the plateau stress and energy absorption tended to decrease with increasingφ. Therefore, it was shown that FG Al foam plates with varying mechanical properties can be fabricated by the FPS process with the traversing tool.