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首页> 外文期刊>Journal of Materials Engineering and Performance >Properties of the Ti40Zr10Cu36Pd14 BMG Modified by Sn and Nb Additions
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Properties of the Ti40Zr10Cu36Pd14 BMG Modified by Sn and Nb Additions

机译：Sn和Nb改性的Ti40Zr10Cu36Pd14 BMG的性能

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摘要

The results of investigation of the influence of additions of 2 and 3 at.% of Sn and simultaneously of Sn and 3 at.% Nb on microstructure and properties of the bulk metallic glasses of composition (Ti40Cu36-x Zr10Pd14Sn (x) )(100-y) Nb (y) are reported. It was found that the additions of Sn increased the temperatures of glass transition (T (g)), primary crystallization (T (x) ), melting, and liquidus as well as supercooled liquid range (Delta T) and glass forming ability (GFA). The nanohardness and elastic modulus decreased in alloys with 2 and 3 at.% Sn additions, revealing similar values. The 3 at.% Nb addition to the Sn-containing amorphous phase decreased as well all the T (g), T (x) , T (L), and T (m) temperatures as Delta T and GFA; however, relatively larger values of this parameters in alloys containing larger Sn content were preserved. In difference to the previously published results, in the case of the amorphous alloys containing small Nb and Sn additions, a noticeable amount of the quenched-in crystalline phases was not confirmed, at least of the micrometric sizes. In the case of the alloys containing Sn or both Sn and Nb, two slightly different amorphous phase compositions were detected, suggesting separation in the liquid phase. Phase composition of the alloys determined after amorphous phase crystallization was similar for all compositions. The phases Cu8Zr3, CuTiZr, and Pd3Zr were mainly identified in the proportions dependent on the alloy compositions.
机译：研究结果表明，添加2和3 at。％的Sn以及同时添加Sn和3 at。％的Nb对组成（Ti40Cu36-x Zr10Pd14Sn（x））的大块金属玻璃的微观结构和性能的影响（100） -y）报告了Nb（y）。发现添加锡会增加玻璃化转变温度（T（g）），初生结晶温度（T（x）），熔融和液相线以及过冷液体范围（Delta T）和玻璃形成能力（GFA） ）。锡含量为2和3 at。％的合金中的纳米硬度和弹性模量下降，显示出相似的值。含锡非晶态相中3 at。％Nb的添加以及所有T（g），T（x），T（L）和T（m）温度都降低了，如Delta T和GFA。但是，保留了较大锡含量的合金中该参数的相对较大值。与先前发表的结果不同，在非晶态合金中含有少量Nb和Sn的情况下，至少在微米尺寸的情况下，未确认到明显数量的淬火结晶相。在合金中含有锡或锡和铌两种合金的情况下，检测到两种略有不同的非晶相组成，表明在液相中存在分离。非晶相结晶后测定的合金的相组成对于所有组成都是相似的。 Cu8Zr3，CuTiZr和Pd3Zr相主要根据与合金成分有关的比例确定。

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