Crystallization behaviour and mechanical properties of rapidly solidified Al87.5</sub>Ni7</sub>Mm5</sub>Fe0.5</sub> amorphous alloy

K. L. Sahoo; P. Poddar; Goutam Das; B. Ravi Kumar

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Crystallization behaviour and mechanical properties of rapidly solidified Al87.5Ni7Mm5Fe0.5 amorphous alloy

机译：快速凝固Al87.5 Ni7 Mm5 Fe0.5 非晶合金的结晶行为和力学性能

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The crystallization behaviour and the mechanical properties of rapidly solidified Al87.5Ni7Mm5Fe0.5 alloy ribbons have been examined in both as-melt-spun and heat-treated condition using differential scanning calorimetry, X-ray diffractometry (XRD), transmission electron microscopy (TEM), tensile testing and Vicker’s microhardness machine. XRD and TEM studies revealed that the as-melt-spun ribbons are fully amorphous. The amorphous ribbon undergoes three-stage crystallization process upon heating. Primary crystallization resulted in the formation of fine nanocrystalline fcc-Al particles embedded in the amorphous matrix. The second and third crystallization stages correspond to the precipitation of Al11(La,Ce)3 and Al3Ni phases, respectively. Microhardness and tensile strength of the ribbons were examined with the variation of temperature and subsequently correlated with the evolved structure. Initially, the microhardness of the ribbon increases with temperature followed by a sharp drop in hardness owing to the decomposition of amorphous matrix that leads to formation of intermetallic compounds

机译：研究了快速凝固的Al87.5 Ni7 Mm5 Fe0.5 合金带的结晶行为和力学性能。使用差示扫描量热法，X射线衍射仪（XRD），透射电子显微镜（TEM），拉伸测试和维氏显微硬度计测量条件。 XRD和TEM研究表明，初熔带是完全无定形的。非晶带在加热时经历三阶段结晶过程。初次结晶导致包埋在无定形基质中的细纳米晶fcc-Al颗粒的形成。第二和第三结晶阶段分别对应于Al11 （La，Ce）3 和Al3 Ni相的析出。带的显微硬度和抗拉强度随温度的变化而变化，并随后与所形成的结构相关。最初，碳带的显微硬度随温度升高而增加，随后由于非晶态基质的分解导致金属间化合物的形成，硬度急剧下降。

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《Journal of Materials Science》 |2007年第16期|6665-6671|共7页
作者
K. L. Sahoo; P. Poddar; Goutam Das; B. Ravi Kumar;
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National Metallurgical Laboratory Jamshedpur 831007 India;

National Metallurgical Laboratory Jamshedpur 831007 India;

National Metallurgical Laboratory Jamshedpur 831007 India;

National Metallurgical Laboratory Jamshedpur 831007 India;

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1. Crystallization behaviour and mechanical properties of rapidly solidified Al(87.5)Ni(7)Mm(5)Fe(0.5) amorphous alloy [J] . Sahoo KL, Poddar P, Das G, Journal of Materials Science . 2007,第16期

机译：快速凝固的Al（87.5）Ni（7）Mm（5）Fe（0.5）非晶态合金的结晶行为和力学性能
2. Thermal Stability and Mechanical Properties of Glassy and Amorphous Ni-Nb-Zr Alloys Produced by Rapid Solidification [J] . Hisamichi Kimura, Akihisa Inoue, Shin-ichi Yamaura Materials transactions . 2003,第6期

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Crystallization behaviour and mechanical properties of rapidly solidified Al87.5Ni7Mm5Fe0.5 amorphous alloy

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