Hot-dip plated steel material
A hot-dip plated steel material has a plating layer on a surface of a steel material, in which the plating layer contains Al: more than 22.5% and 50.0% or less, Mg: more than 3.0% and 15.0% or less, Ca: 0.03 to 0.6%, Si: 0.03 to 1.0%, Fe: 2 to 25%, and a remainder consisting of Zn and impurities, and, in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, I 1 obtained from an X-ray diffraction peak of Al 0.5 Fe 1.5 is 1.1 or more, and I 2 obtained from X-ray diffraction peaks of Zn, Al, and MgZn 2 is 0.25 or less.
1. A hot-dip plated steel material that is a plated steel material comprising a plating layer on a surface of a steel material, wherein
the plating layer has an average chemical composition including, in mass %,
Al: more than 22.5% and 50.0% or less,
Mg: more than 3.0% and 15.0% or less,
Sn: 0% or more and 0.7% or less,
Bi: 0% or more and 0.3% or less,
In: 0% or more and 0.3% or less,
Ca: 0.03% or more and 0.6% or less,
Y: 0% or more and 0.30% or less,
La: 0% or more and 0.30% or less,
Ce: 0% or more and 0.30% or less,
Si: 0.03% or more and 1.0% or less,
Cr: 0% or more and 0.25% or less,
Ti: 0% or more and 0.25% or less,
Ni: 0% or more and 0.25% or less,
Co: 0% or more and 0.25% or less,
V: 0% or more and 0.25% or less,
Nb: 0% or more and 0.25% or less,
Cu: 0% or more and 0.25% or less,
Mn: 0% or more and 0.25% or less,
Fe: 2.0% or more and 25% or less,
Sr: 0% or more and 0.50% or less,
Sb: 0% or more and 0.50% or less,
Pb: 0% or more and 0.50% or less,
B: 0% or more and 0.50% or less,
Li: 0% or more and 0.50% or less,
Zr: 0% or more and 0.50% or less,
Mo: 0% or more and 0.50% or less,
W: 0% or more and 0.50% or less,
Ag: 0% or more and 0.50% or less,
P: 0% or more and 0.50% or less, and
a remainder consisting of Zn and impurities,
a total amount ΣA of Sn, Bi, and In is 0% or more and 0.7% or less,
a total amount ΣB of Ca, Y, La, and Ce is 0.03% or more and 0.60% or less,
a total amount ΣC of Cr, Ti, Ni, Co, V, Nb, Cu, and Mn is 0% or more and 0.25% or less,
a total amount ΣD of Sr, Sb, Pb, B, Li, Zr, Mo, W, Ag, and P is 0% or more and 0.50% or less,
following formulas (1) to (3) are satisfied,
in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, when I 1 obtained from an X-ray diffraction peak of Al 0.5 Fe 1.5 is defined by formula (A-1), formula (A-2) is satisfied, and
when I 2 obtained from X-ray diffraction peaks of Zn, Al, and MgZn 2 is defined by formula (B-1), formula (B-2) is satisfied,
Sn≤Si (1)
15≤Mg/Si (2)
1.0≤Si/Ca≤5.0 (3)
[
Mathematical
Formula
1
]
I
1
=
I
max
(
43.45
∼
44.45
°
)
I
(
43.45
)
+
0.5
{
❘
"\[LeftBracketingBar]"
I
(
43.45
°
)
-
I
(
44.45
°
)
❘
"\[RightBracketingBar]"
}
(
A
‐
1
)
1.1
≦
I
1
(
A
‐
2
)
I
2
=
I
max
(
36.
∼
36.6
°
)
I
max
(
36.
∼
36.6
°
)
+
I
max
(
38.
∼
39.
°
)
+
I
max
(
19.2
∼
20.
°
)
(
B
‐
1
)
I
2
≦
0.25
(
B
‐
2
)
provided that, in formulas (1) to (3), Sn, Si, Mg, and Ca represent contents (mass %) of respective elements in the plating layer, Imax (k to m°) in formulas (A-1) and (B-1) represents an absolute maximum value of an X-ray diffraction intensity between a diffraction angle of k° and a diffraction angle of m°, Imax (n°) in formula (A-1) represents an X-ray diffraction intensity at a diffraction angle of n°, and k, m, and n each represent a diffraction angle indicated in formulas (A-1) and (B-1).
2. The hot-dip plated steel material according to claim 1 , wherein in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, when 13 obtained from an X-ray diffraction peak of MgZn 2 is defined by formula (C-1), formula (C-2) is satisfied;
[
Mathematical
Formula
2
]
I
3
=
I
max
(
28.52
∼
28.92
°
)
{
I
max
(
19.2
∼
20.
°
)
+
I
max
(
20.58
∼
20.98
°
)
+
I
max
(
22.06
∼
22.46
°
)
+
I
max
(
28.52
∼
28.92
°
)
}
(
C
‐
1
)
I
3
≦
0.03
(
C
‐
2
)
provided that Imax (k to m°) in formula (C-1) represents an absolute maximum value of an X-ray diffraction intensity between a diffraction angle of k° and a diffraction angle of m°, and k and m each represent a diffraction angle indicated in formula (C-1).
3. The hot-dip plated steel material according to claim 1 , wherein in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, when I 4 obtained from an X-ray diffraction peak of Ca(Al 2 Si 2 )O 8 is defined by formula (D-1), formula (D-2) is satisfied;
[
Mathematical
Formula
3
]
I
4
=
I
max
(
22.91
∼
23.91
°
)
I
(
22.91
°
)
+
0.5
{
❘
"\[LeftBracketingBar]"
I
(
22.91
°
)
-
I
(
23.91
°
)
❘
"\[RightBracketingBar]"
}
(
D
‐
1
)
1.1
≦
I
4
(
D
‐
2
)
provided that Imax (k to m°) in formula (D-1) represents an absolute maximum value of an X-ray diffraction intensity between a diffraction angle of k° and a diffraction angle of m°, Imax (n°) represents an X-ray diffraction intensity at a diffraction angle of n°, and k, m, and n each represent a diffraction angle indicated in formula (D-1).
4. The hot-dip plated steel material according to claim 2 , wherein in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, when 14 obtained from an X-ray diffraction peak of Ca(Al 2 Si 2 )O 8 is defined by formula (D-1), formula (D-2) is satisfied;
[
Mathematical
Formula
3
]
I
4
=
I
max
(
22.91
∼
23.91
°
)
I
(
22.91
°
)
+
0.5
{
❘
"\[LeftBracketingBar]"
I
(
22.91
°
)
-
I
(
23.91
°
)
❘
"\[RightBracketingBar]"
}
(
D
‐
1
)
1.1
≦
I
4
(
D
‐
2
)
provided that Imax (k to m°) in formula (D-1) represents an absolute maximum value of an X-ray diffraction intensity between a diffraction angle of k° and a diffraction angle of m°, Imax (n°) represents an X-ray diffraction intensity at a diffraction angle of n°, and k, m, and n each represent a diffraction angle indicated in formula (D-1).