Creation of aluminum alloy by severe plastic deformation of cutting chip and its mechanical properties
Creation of aluminum alloy by severe plastic deformation of cutting chip and its mechanical properties
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切屑剧烈塑性变形制备铝合金及其力学性能
DOI：
10.2464/jilm.53.368
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Toshiro Kobayashi
中科院分区：
文献类型：
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作者：
Yasumitsu Fujii;H. Toda;Toshiro Kobayashi
通常，切屑从切削油中分离出来，然后重新熔化，仅作为原材料回收利用。然而，在微观结构方面，由于切屑在形成过程中高度积累的应变，因此可以确定切屑是可使用的。在本研究中，铝屑通过冷大塑性变形进行固结，从而利用其高度变形的组织用于铝合金的强化。在对各种切割工艺和条件进行了初步调查后，找到了最适合目前用途的切割工艺和条件，并通过挤压和锻造相结合的方法成功地将铝片压实。与变形合金相比，在相同的外加应变下，固结后的切屑表现出更高的强度和更细小的组织。此外，还证明了几种方法可以有效地消除芯片表面氧化膜的不良影响，因为在加载过程中不可避免地会导致脱粘。
Cutting chip is, generally, separated from cutting oil and then remelted for recycling solely as raw materials. In terms of microstructures, however, the cutting chip may be identified utilizable due to highly-accumulated strain during its formation. In this study, aluminum chips are consolidated by cold severe plastic deformation so that their highly deformed microstructure is utilized for the strengthening of an aluminum alloy. After a preliminary investigation in which a variety of cutting processes and conditions are examined to find the optimum one for the present purpose, the aluminum chips have been successfully consolidated by a combination of pressing and swaging. The consolidated chips exhibit superior strength together with finer microstructure to a wrought alloy when compared at a same applied strain. In addition, a couple of methods are demonstrated effective to eliminate the undesirable effects of oxide film on the surface of the chips, which inevitably causes debonding during loading.