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喷射沉积AlZn_(12)Mg_2Cu_2合金的组织结构及力学性能
Microstructure and Mechanical Propertis of Spray Formed AlZn_(12)Mg_2Cu_2 Alloy
查看参考文献7篇
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文摘
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用喷射成形技术在较低雾化压力下沉积了AlZn_(12)Mg_2Cu_2合金，对其组织结构用光学显微镜和透射电子显微镜进行了观察和分析，发现：在本喷射成形工艺条件下，可以形成高致密度具有等轴晶粒的均匀合金，晶粒尺寸在30～60μm范围内，在晶内和晶界处有MgZn_2相的析出；对制备的材料经挤压比为7.7：1条件下的热挤压和T6时效处理后进行了力学性能测定。结果显示屈服强度（σ_(US)）为740MPa，抗拉强度（σ_(UTS)）为754MPa，延伸率（δ）8.6%。 |
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其他语种文摘
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AlZn_(12)Mg_2Cu_2 alloy was prepared using the spray forming technique at a lower atomization pressure. The microstructures of the deposited material were examined and analyzed by optical microscopy and transmission electron microscopy. It has been found that high compacted equiaxed material with a grains size from 30 to 60 μm can be achieved. MgZn_2 phase precipitated in grains and at grain boundaries. After hot extrusion with a extrusion ratio 7.7 and T6 heat treatment, the mechanical properties have been determined. The results are σ_(US) = 740MPa, σ_(UTS) = 753MPa, δ = 8.6%. |
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来源
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材料工程
,2002,0(2):23-26 【核心库】
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关键词
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喷射成形
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显微组织
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力学性能
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7xxx合金
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地址
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中国科学院金属研究所, 沈阳, 110015
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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冶金工业 |
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文献收藏号
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CSCD:964205
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