Amorphous alloy ribbon stretching device combined with nanoindenter and use method of amorphous alloy ribbon stretching device

Abstract

An amorphous alloy ribbon stretching device combined with a nanoindenter comprises a base, a high-precision turbo-type coarse and fine tuning differential head, fixed columns, a movable baffle, a fixed baffle, a motor, a motor power supply, a gear, a sample holder, clamps and a remote control, wherein the high-precision turbo-type coarse and fine tuning differential head is located between the fixed columns, one end of the high-precision turbo-type coarse and fine tuning differential head is connected with the movable baffle, the fixed baffle is located at one end of the base and is integrally connected with the base, a spring is sandwiched between the movable baffle and the fixed baffle, the sample holder is arranged on the base and located between the movable baffle and the fixed baffle, the clamps are attached to the sample holder, the motor and the motor power supply are fixed on the base, and a drive shaft of a micro motor is connected with the high-precision turbo-type coarse and fine tuning differential head through the gear. The device is used for testing micro-nano rheological mechanical behaviors, and has controllable deformation and strain and high accuracy. The device is particularly suitable for testing micro-nano mechanical behaviors of a film material in different tensile strain states in a tensile strain process.

Description

technical field [0001] The invention relates to a technology for studying the structural evolution and related mechanical behavior of amorphous alloy materials by using a nano-indenter, in particular to an amorphous alloy strip stretching device used in conjunction with a nano-indenter and a method for using the same. Background technique [0002] Amorphous alloys have unique mechanical properties such as high elasticity and high strength, as well as functionalities such as soft magnetism and corrosion resistance, and are a class of new materials with broad application prospects. At the same time, amorphous alloy is an ideal model material for studying the deformation mechanism of amorphous materials. Therefore, the material structure mechanism of amorphous alloy deformation has always been the focus and hot spot of people's research. Amorphous alloys have a nominal elastic region of more than 2%. Studies have shown that in the nominal elastic region, amorphous alloys exhibi...

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Problems solved by technology

However, due to the limited size of the sample chamber of the nanoindenter, and during the test, the test accuracy is very sensitive to the temperature change of the sample chamber, that is, a slight temperature disturbance will also produce significant temperature drift.

Therefore, it is difficult to combine traditional large-scale mechanical experimental equipment with nano-indentation instruments to detect the evolution of micro-nano mechanical behavior during stress.

In addition, the nano-indenter is used to test the mechanical behavior of micro-nano, especially in the low-load mode. The indentation depth is usually at the nanometer level, so the flatness of the sample surface is very high. General methods such as mechanical grinding of the surface of large-sized samples It is difficult to meet the requirements of the test on the sample surface

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