首页> 外文会议>International symposium on metastable, mechanically alloyed and nanocrystalline materials >Glass Forming Ability and Crystallization Behaviour of New Multicomponent (Ti_(33)Zr_(33)Hf_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20) Alloy Developed by Equiatomic Substitution
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Glass Forming Ability and Crystallization Behaviour of New Multicomponent (Ti_(33)Zr_(33)Hf_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20) Alloy Developed by Equiatomic Substitution

机译:玻璃形成能力和新型多组分的结晶行为(Ti_(33)Zr_(33)HF_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20)Al_(20)由赤型替代开发的合金

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摘要

A new multicomponent alloy developed by equiatomic substitution is studied in terms of glass forming ability and the crystallization behaviour. The glass forming ability of (Ti_(33)Zr_(33)Hf_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20) alloy was assessed using the supercooled liquid region and the reduced glass transition temperature, measured by differential scanning calorimetry (DSC) and differential thermal analysis (DTA). The formation of phases with the various wheel speeds from 40 m/s to 15 m/s and the crystallization behaviour was studied by X-ray diffractometry (XRD) and transmission electron microscopy (TEM). The supercooled liquid region and the reduced glass transition temperature were 124°C and 0.525, respectively, measured from the as-quenched (Ti_(33)Zr_(33)Hf_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20) ribbons produced with the wheel speed 40 m/s. The as-quenched (Ti_(33)Zr_(33)Hf_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20) alloy transformed to nano-sized icosahedral phase during the first exothermic reaction. After crystallization at 700°C, this alloy transformed to hexagonal type Laves phase and Ti_2Ni type phase.
机译:在玻璃成型能力和结晶行为方面研究了赤型替代开发的一种新的多组分合金。 (Ti_(33)Zr_(33)HF_(33))_(60)(Ni_(50)Cu_(50))_(20)Al_(20)合金的玻璃成型能力使用过冷液体区域和通过差示扫描量热法(DSC)和差分热分析(DTA)测量的降低的玻璃化转变温度。通过X射线衍射法(XRD)和透射电子显微镜(TEM)研究了从40m / s至15m / s的各个车轮速度的相位形成和结晶行为。过冷液区域和降低的玻璃化转变温度分别为124℃和0.525,从淬火(Ti_(33)Zr_(33)HF_(33))_(60)(Ni_(50)Cu_( 50))_(20)AL_(20)用车轮速度产生40m / s的丝带。作为淬火(Ti_(33)Zr_(33)HF_(33))_(60)(Ni_(50)(Ni_(50)Cu_(50))_(20)Al_(20)合金在纳米大小的ICOSaheLal相变为期间首先放热反应。在700℃结晶后,该合金转化为六边形型疏浚相和Ti_2NI型相。

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