A Method for Evaluating Residual Thermal Stress of Amorphous Alloy Ribbon
A residual thermal stress, amorphous alloy technology, used in force/torque/work measuring instruments, instruments, measuring devices, etc., can solve the problem of lack of effective technical methods for measuring amorphous alloy thin strips, and achieve controllability and repeatability. The effect of strong performance, high technical reliability and simple implementation
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[0032] combine figure 1 , figure 2 , a kind of method that the present invention proposes to evaluate the residual thermal stress of amorphous alloy thin strip, the instrument used is pressure gauge, mainly comprises parts such as sample table 1, indenter 2, pressure gauge 3; This evaluation amorphous alloy thin strip A preferred implementation of the method for residual thermal stress, comprising the following specific steps:
[0033]Step 1: Prepare a strip-shaped amorphous alloy thin strip sample for measurement: cut the amorphous alloy thin strip into a long strip-shaped sample 4 of appropriate length and appropriate width, the length of which is greater than 40 mm and the width is no more than 20 mm;
[0034] Step 2: Measure residual thermal stress of amorphous alloy ribbon: see figure 2 , fold the amorphous alloy thin strip 4 in half along the length direction so that the two ends are in contact with each other, place it on the sample stage 1 of the pressure gauge, an...
Embodiment 1
[0038] The material to be tested is Fe prepared by supercooling and solidifying at 370°C and 450°C respectively. 76 P 3 Si 7 B 14 A thin strip of amorphous alloy (the number in the chemical formula is at%), which is prepared by the high-speed planar flow continuous casting method commonly used in this field.
[0039] The specific operation steps of using the method for evaluating the residual thermal stress of amorphous alloy strips according to the present invention are as follows:
[0040] Step 1, preparing strip-shaped amorphous alloy thin strip samples for measurement: cutting two kinds of amorphous alloy thin strips into long strip samples with a length of 40 mm and a width of 20 mm;
[0041] Step 2, measuring the residual thermal stress of the amorphous alloy thin strip: two kinds of Fe 76 P 3 Si 7 B 14 The amorphous alloy thin strip is folded in half along the length direction so that the two ends are in contact with each other, placed on the sample stage 1 of th...
Embodiment 2
[0044] The material to be tested is Fe with supercooled solidification temperature of 380°C and 460°C respectively. 79 P 2 Si 6 B 13 A thin strip of amorphous alloy (the number in the chemical formula is at%), which is prepared by the high-speed planar flow continuous casting method commonly used in this field.
[0045] The specific operation steps of using the method for evaluating the residual thermal stress of amorphous alloy strips according to the present invention are as follows:
[0046] Step 1, preparing strip-shaped amorphous alloy thin strip samples for measurement: cutting two kinds of amorphous alloy thin strips into long strip samples with a length of 40 mm and a width of 20 mm;
[0047] Step 2, measuring the residual thermal stress of the amorphous alloy thin strip: two kinds of Fe 79 P 2 Si 6 B 13 The amorphous alloy thin strip is folded in half along the length direction so that the two ends are in contact with each other, placed on the sample stage of t...
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