Measurement method of retained austenite content in high nickel alloy steel
A technology of retained austenite and measurement method, applied in the field of measurement of retained austenite content in high-nickel alloy steel, can solve problems such as uneconomical measurement equipment and measurement costs, and achieve saving measurement costs, high speed, and improved measurement. The effect of efficiency
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Embodiment 1
[0015] 1) Select 3 high-nickel alloy steel standard samples, and the residual austenite content R in the 3 high-nickel alloy steel standard samples a are not the same;
[0016] 2) Using X-ray analysis technology and using a tensile testing machine to measure the residual austenite content R in each high-nickel alloy steel standard sample in step 1) a and tensile strength Rm, three groups of retained austenite content R a And the data of tensile strength Rm, as shown in table 1;
[0017] Table 1
[0018]
[0019] 3) The data in Table 1 in step 2) is plotted on the coordinate axis, and the retained austenite content R a is the axis of abscissa, the tensile strength Rm is the axis of ordinate, according to the square of the correlation coefficient of the straight line fitting=0.990, the points in the coordinate axis are fitted to form a fitted straight line, and the fitted straight line equation Rm=-25.64R a +1427;
[0020] 4) Carry out the tensile test on the high-nickel...
Embodiment 2
[0022] 1) Select 4 high-nickel alloy steel standard samples, and the residual austenite content R in the 4 high-nickel alloy steel standard samples a are not the same;
[0023] 2) Using X-ray analysis technology and using a tensile testing machine to measure the residual austenite content R in each high-nickel alloy steel standard sample in step 1) a and tensile strength Rm, four groups of retained austenite content R a And the data of tensile strength Rm, as shown in table 2;
[0024] Table 2
[0025]
[0026] 3) The data in Table 2 in step 2) is plotted in the coordinate axis, and the retained austenite content R a is the axis of abscissa, the tensile strength Rm is the axis of ordinate, according to the square of the correlation coefficient of the straight line fitting=0.998, the points in the coordinate axis are fitted to form a fitted straight line, and the fitted straight line equation Rm=-24.85R is obtained a +1416;
[0027] 4) Carry out the tensile test on the ...
Embodiment 3
[0029] 1) Select 5 high-nickel alloy steel standard samples, and the residual austenite content R in the 5 high-nickel alloy steel standard samples a are not the same;
[0030] 2) Using X-ray analysis technology and using a tensile testing machine to measure the residual austenite content R in each high-nickel alloy steel standard sample in step 1) a and tensile strength Rm, 5 groups of retained austenite content R a And the data of tensile strength Rm, as shown in table 3;
[0031] table 3
[0032]
[0033] 3) The data in Table 1 in step 2) is plotted on the coordinate axis, and the retained austenite content R a is the axis of abscissa, the tensile strength Rm is the axis of ordinate, according to the square of the correlation coefficient of the straight line fitting=0.991, the points in the coordinate axis are fitted to form a fitted straight line, and the fitted straight line equation Rm=-25.48R a +1427;
[0034] 4) Carry out the tensile test on the high-nickel all...
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