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首页> 外文期刊>Materials and Manufacturing Processes >Microstructure and Properties of the Spray-Formed and Extruded 7075 Al Alloy
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Microstructure and Properties of the Spray-Formed and Extruded 7075 Al Alloy

机译：喷射成型挤压7075铝合金的组织与性能

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摘要

In the present investigation, a very good combination of strength and ductility, 630Â MPa 0.2% proof stress and 14.8% elongation to fracture in tensile test, has been obtained for the 7075 Al alloy after optimizing the processing parameters for spray forming, hot extruding the spray deposit, and peak aging the samples taken from the extruded rod. The spray deposits contained some porosity but it was almost eliminated on hot extrusion. Electron probe microanalysis revealed that even though spray forming was carried out in an open atmosphere, it did not affect the oxygen content and its distribution in the material on spray forming, because the atomizing argon gas provided a protective cover to molten droplets and prevented their oxidation. The chemical composition of the spray-formed material was found to be almost the same as the raw material, and the major alloying elements were found to be uniformly distributed in the extruded rod.View full textDownload full textKeywordsAluminum alloy, Extrusion, Microstructure, Porosity, Spray forming, Tensile propertiesRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10426910903447253
机译：在本研究中，对7075铝合金进行了优化，优化了喷射成形，热挤压成型的工艺参数，从而获得了强度和延展性的很好的组合，强度为630 MPa，抗拉强度为0.2％，拉伸试验中断裂伸长率为14.8％。喷涂沉积物，并使从挤压棒中取出的样品达到峰值老化。喷雾沉积物具有一定的孔隙度，但在热挤压时几乎消除了。电子探针显微分析表明，即使在露天气氛中进行喷涂成型，它也不会影响喷涂成型材料中的氧含量及其分布，因为雾化的氩气为熔融液滴提供了保护层并防止了其氧化。发现喷射成形材料的化学成分与原材料几乎相同，并且发现主要合金元素均匀分布在挤压棒中。查看全文下载全文关键字铝合金，挤压，微结构，孔隙率喷涂成型，拉伸性能相关变量var addthis_config = {ui_cobrand：“泰勒和弗朗西斯在线”，servicescompact：“ citeulike，netvibes，twitter，technorati，delicious，linkedin，facebook，stumbleupon，digg，google，更多”，发布：“ ra-4dff56cd6bb1830b “};添加到候选列表链接永久链接http://dx.doi.org/10.1080/10426910903447253

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