The effect of precipitate shape and orientation on dispersion strengthening in high strength aluminium alloys
The effect of precipitate shape and orientation on dispersion strengthening in high strength aluminium alloys
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DOI：
10.4028/www.scientific.net/msf.217-222.1257
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发表时间：
1996-01-01
期刊：
影响因子：
--
通讯作者：
Polmear, IJ
中科院分区：
文献类型：
--
作者：
Nie, JF;Muddle, BC;Polmear, IJ
对含有{111}（α）和{100}（α）析出相的板状和（α）析出相的铝合金，提出了适当的Orowan方程< 100 >，并定量地研究了析出相形状和取向对弥散强化的影响。所提出的模型似乎给出的预测，同意定性与实验观察，高拉伸强度往往与合金含有内在的强大，板状沉淀物与合理的结晶习性平面和大的纵横比。
Appropriate versions of the Orowan equation have been developed for aluminium alloys containing rationally oriented {111}(alpha) and {100}(alpha) precipitate plates, and < 100 >(alpha) precipitate rods, and the effects of precipitate shape and orientation on dispersion strengthening have been examined quantitatively. The proposed model appears to give predictions which agree well qualitatively with experimental observations that high tensile strength is frequently associated with alloys containing intrinsically strong, plate-shaped precipitates with rational crystallographic habit planes and large aspect ratios.