非晶态金属在升温过程中体积膨胀、过剩自由体积减少及重新分配同时发生,在比较高的温度还出现玻璃转变和结晶过程,致使长度较一般金属材料发生更复杂的变化。非晶态金属的膨胀特点很像氧化物玻璃。为了进一步认识其膨胀规律,本文用拉伸法测量了6种Pd-Si基金属玻璃的膨胀过程。非晶态合金条带在离心铜转鼓上获得,宽0.5mm左右,厚0.03mm左右。被测样品采取淬火态(经室温长期稳定化)和退火态(以10℃/min的速度升温至玻璃转变温度之后冷却到室温)。因为非晶条带很薄,热膨胀需用拉伸法测量,装置如文献[5]中描述。样品的有效长度为30mm。用温度程序控制器控温,全部实验采用升温速率为10℃/min,流动氩气保护。拉伸负 Amorphous metals expand in volume during volume expansion, excess free volume reduction and redistribution occur simultaneously, and at higher temperatures glass transitions and crystallization occur, resulting in more complex changes in length than typical metal materials. The amorphous metal swells much like oxide glass. In order to further understand the law of its expansion, the expansion process of six kinds of Pd-Si-based metallic glass was measured by stretching method. Amorphous alloy strip obtained on a centrifugal copper drum, about 0.5mm wide and about 0.03mm thick. The tested samples were quenched (long-term stabilized at room temperature) and annealed (cooled to room temperature after the temperature was raised to the glass transition temperature at a rate of 10 ° C / min). Because of the thinness of the amorphous strip, thermal expansion is measured using the tensile method, with the device described in [5]. The effective length of the sample is 30mm. Temperature controller with temperature control, all experiments using a heating rate of 10 ℃ / min, argon flow protection. Tensile negative