Twin induced plastic steel with high elongation percentage and high hole expansion rate and manufacture method thereof
A technology of twin-induced plasticity and high hole expansion rate, which is applied in the field of metal materials to achieve the effects of saving product cost, excellent comprehensive mechanical properties, and simple preparation method.
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[0024] The present invention will be further described below by way of examples.
[0025] The chemical composition of the steel of the embodiment of the present invention is shown in Table 1.
[0026] Table 1 The chemical composition (wt%) of steel of the embodiment of the present invention
[0027] Example
C
Si
mn
Al
P
S
N
Re
Nb
V
Cu
1
0.36
0.4
18.6
0.35
0.013
0.002
0.0067
0.17
0.056
2
0.64
--
14.5
0.8
0.10
0.0057
0.021
0.09
0.13
3
0.47
0.5
19.2
0.46
0.007
0.0033
0.012
0.14
0.32
4
0.42
0.16
18.06
--
0.08
0.0054
0.019
0.1
--
--
--
5
0.55
0.6
19.5
--
0.011
0.003
0.0145
0.25
--
...
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