The Thermal Stability and Variation of Precipitated Phase in Amorphous Zr70Cu30 Alloy at High Pressure
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摘要: 用电阻测量及X射线衍射法研究了非晶Zr70Cu30合金在常压和高压下热稳定性以及晶化相的变化。结果表明压力提高了这种非晶合金的晶化温度并明显地改变了合金中的相平衡关系。在2 GPa压力下,平衡相为Cu10Zr7和-Zr的混合物,而常压下为CuZr2和少量-Zr的混合物。Abstract: The thermal stability and the variation of constituent crystallised phase in annealing a morphous Zr70Cu30 alloy under a pressure of 2 GPa were examined by resistance measurement and X-ray diffration analysis results show an increment of crystallizing temperature at high pressure. An evident variation on phase equilibrium was observed. Instead of the precipitation of CuZr2 compound (with a little amount of -Zr) at normal pressure, a mixture of Cu10Zr7 compound and -Zr occurs under 2 GPa.
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Key words:
- amorphous alloys /
- thermal stability /
- crystallisation /
- high-pressure effect /
- zirconium-copper alloy
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