文章基本信息

标题：Effect of post weld heat treatment on tensile properties and microstructure characteristics of friction stir welded armour grade AA7075-T651 aluminium alloy
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作者：P. Sivaraj ; D. Kanagarajan ; V. Balasubramanian 等
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2014
卷号：10
期号：1
页码：1-8
DOI：10.1016/j.dt.2014.01.004
出版社：Elsevier B.V.
摘要：This paper reports the effects of post weld heat treatments, namely artificial ageing and solution treatment followed by artificial ageing, on microstructure and mechanical properties of 12 mm thick friction stir welded joints of precipitation hardenable high strength armour grade AA7075-T651 aluminium alloy. The tensile properties, such as yield strength, tensile strength, elongation and notch tensile strength, are evaluated and correlated with the microhardness and microstructural features. The scanning electron microscope is used to characterie the fracture surfaces. The solution treatment followed by ageing heat treatment cycle is found to be marginally beneficial in improving the tensile properties of friction stir welds of AA7075-T651 aluminium alloy.
关键词：AA7075 aluminium alloy ; Post weld heat treatment ; Friction stir welding ; Tensile property