Effects of Zr additions on structure and tensile properties of an Al-4.5Cu-0.3Mg-0.05Ti (wt.％) alloy|Hamed Kamali;Erfan Kamali;Massoud Emamy|Faculty of Materials Engineering,Sahand University of Technology,P.O.Box 51335-1996,Tabriz,Iran - 期刊导航|首站-论文投稿智能助手|论文发表|论文智能投稿|期刊自助发表推荐|杂志社快速发表|查同导刊-域田数据官方网站

典型文献

Effects of Zr additions on structure and tensile properties of an Al-4.5Cu-0.3Mg-0.05Ti (wt.％) alloy

文献摘要：

The effects of different Zr additions (0.05wt.％-0.5wt.％) on the structure and tensile properties of an Al-4.5Cu-0.3Mg-0.05Ti (wt.％) alloy solidified under a high cooling rate (18 ℃·s-1), in as-cast and T6 heat-treated conditions were studied. The as-cast structure of the alloy consists of equiaxed grains of α-Al with an average size of 64 μm which is unaffected by the Zr additions, indicating the ineffectiveness of Zr in the grain refinement of the alloy. Scanning electron microscopy, along with X-ray diffraction analysis revealed the presence of elongated θ-Al2Cu at the grain boundaries; in addition, coarse Al3Zr particles exist in the intergranular regions of the 0.5wt.％ Zr-containing alloy. After the T6 heat treatment, the elongated θ particles were fragmented; however, the coarse Al3Zr particles remained unchanged in the microstructure. Also, the formation of fine β'-Al3Zr and θ'-Al3Cu/θ'-Al2Cu phases during T6 heat treatment was revealed by transmission electron microscopy. The results of the tensile tests showed that the Zr additions increase the strength of the alloy in both as-cast and T6 heat-treated conditions, but reduce its elongation, especially with 0.5wt.％ Zr addition. The 0.3wt.％ Zr-added alloy in the T6 heat-treated condition has the highest quality index value (249 MPa). Fractography of the fracture surfaces of the alloys revealed ductile fracture mode including dimples and cracked intermetallic phases in both conditions.

文献关键词：

中图分类号：

[1] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）

[2] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）

[3] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）

作者姓名：

Hamed Kamali;Erfan Kamali;Massoud Emamy

作者机构：

School of Metallurgy and Materials Engineering,College of Engineering,University of Tehran,P.O.Box 11155-4563,Tehran,Iran;Faculty of Materials Engineering,Sahand University of Technology,P.O.Box 51335-1996,Tabriz,Iran

文献出处：

中国铸造

引用格式：

[1]Hamed Kamali;Erfan Kamali;Massoud Emamy-.Effects of Zr additions on structure and tensile properties of an Al-4.5Cu-0.3Mg-0.05Ti (wt.％) alloy)[J].中国铸造,2022(01):9-16

A类：

Fractography

B类：

Effects,additions,tensile,properties,5Cu,3Mg,05Ti,effects,different,05wt,solidified,under,cooling,rate,cast,T6,heat,treated,conditions,were,studied,consists,equiaxed,grains,average,size,which,unaffected,by,indicating,ineffectiveness,refinement,Scanning,electron,microscopy,along,ray,diffraction,analysis,revealed,presence,elongated,Al2Cu,boundaries,coarse,Al3Zr,particles,exist,intergranular,regions,containing,After,treatment,fragmented,however,remained,unchanged,microstructure,Also,formation,Al3Cu,phases,during,was,transmission,results,tests,showed,that,increase,strength,both,but,reduce,its,elongation,especially,3wt,added,highest,quality,value,fracture,surfaces,alloys,ductile,mode,including,dimples,cracked,intermetallic

AB值：

0.466731

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