超硬铝合金为铝、锌、铜、镁系合金。这类合金是室温强度最高的铝合金，经固溶处理和时效后，其强度达680MPa，其比强度已相当于超强度钢，故名超硬铝。常用的有LC4、LC9等。
n. ultralumin
misc. superduralumin ; ultraduralumin
采用本发明方法，可解决超硬铝合金耐磨性不高的弱点，扩大超硬铝合金的应用领域。
By adopting the method, the weakness of low ultrahard aluminum alloy abrasive resistance can be overcome, and the application field of the ultrahard aluminum alloy is enlarged.
通过对超硬铝合金7175T74的试验研究，给出了7175T74合金的锻造工艺参数。 依此工艺生产的锻件其性能达到美国宇航材料规范AMS4149A规定的技术指标。
By experimental research on the superhard aluminum alloy 7175T74, the parameters of forging process of 7175T74 are given, which achieve the mechanical property of the of U. S. 'AMS4149A.
还介绍了硬铝ly 12 CZ在强电场下超塑变形时的合理工艺参数。
Moreover, the optimum process parameters for the superplastic deformation of duralumin LY12CZ under an electric field are presented.
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