KR20200065964A - 자화특성이 향상된 페라이트계 스테인리스강 및 그 제조 방법 - Google Patents
자화특성이 향상된 페라이트계 스테인리스강 및 그 제조 방법 Download PDFInfo
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Abstract
식 (1): Texture factor: V{001}/V{111} ≥ 1.0
(여기서, V{001} 은 모든 방위의 합에 대한 {001} 집합조직의 부피분율을, V{111} 은 모든 방위의 합에 대한 {111} 집합조직의 부피분율 의미한다.)
Description
도 2는 본 발명의 실시예에 따른 페라이트계 스테인리스강의 집합조직의 F 값의 변화에 따른 자화특성 변화를 나타내는 도면이다.
도 3은 실시예 및 비교예에 따른 최종 냉연 소둔재의 집합조직 분포(ODF)를 나타내는 도면이다.
| 구분 | C | N | Si | Mn | Cu | Al | Ni | Cr | Mo |
| 발명강1 | 0.009 | 0.007 | 0.15 | 0.23 | 0.42 | 0.101 | 0.2 | 21.0 | 0.01 |
| 발명강2 | 0.009 | 0.007 | 0.38 | 0.20 | 0.12 | 0.027 | 0.11 | 18.0 | 0.01 |
| 발명강3 | 0.009 | 0.010 | 0.34 | 0.22 | 0.02 | 0.034 | 0.09 | 16.3 | 0.01 |
| 발명강4 | 0.035 | 0.046 | 0.33 | 0.486 | 0.011 | 0.004 | 0.09 | 16.6 | 0.01 |
| 발명강5 | 0.008 | 0.008 | 0.86 | 0.288 | 0.023 | 0.12 | 0.07 | 14.0 | 0.01 |
| 비교강1 | 0.010 | 0.016 | 0.18 | 0.174 | 0.019 | 0.038 | 0.09 | 16.2 | 0.01 |
| 비교강2 | 0.008 | 0.007 | 0.91 | 0.294 | 0.02 | 0.039 | 0.07 | 13.9 | 0.01 |
| 비교강3 | 0.005 | 0.008 | 0.46 | 0.19 | 0.018 | 0.036 | 0.09 | 16.8 | 0.01 |
| 비교강4 | 0.034 | 0.038 | 0.35 | 0.493 | 0.007 | 0.004 | 0.09 | 16.4 | 0.01 |
| 비교강5 | 0.027 | 0.036 | 0.29 | 0.459 | 0.001 | 0.003 | 0.09 | 16.1 | 0.01 |
| 비교강6 | 0.035 | 0.044 | 0.32 | 0.522 | 0.008 | 0.004 | 0.1 | 16.3 | 0.01 |
| 비교강7 | 0.008 | 0.010 | 0.50 | 0.245 | 0.044 | 0.006 | 0.15 | 11.2 | 0.01 |
| 비교강8 | 0.056 | 0.020 | 0.30 | 0.341 | 0.151 | 0.003 | 0.3 | 12.2 | 0.01 |
| 비교강9 | 0.040 | 0.047 | 0.30 | 0.531 | 0.049 | 0.003 | 0.19 | 16.2 | 0.04 |
| 비교강10 | 0.007 | 0.007 | 0.15 | 0.164 | 0.019 | 0.022 | 0.11 | 17.5 | 0.01 |
| 구분 | 열연소둔 온도 (°C) |
{001} 부피분율(%) |
{111} 부피분율(%) |
식(1) | B50(T) | 식 (2) |
| 실시예 1 | 1,000 | 20.3 | 19.2 | 1.06 | 0.57 | -50 |
| 실시예 2 | 1,020 | 22.9 | 18.3 | 1.25 | 0.6 | -20 |
| 실시예 3 | 1,040 | 23.1 | 16.8 | 1.38 | 0.69 | 0 |
| 실시예 4 | 1,060 | 31.2 | 13.4 | 2.33 | 0.73 | 28 |
| 실시예 5 | 1,080 | 35.1 | 8.6 | 4.08 | 0.87 | 15 |
| 비교예 1 | 900 | 8.3 | 40.2 | 0.21 | 0.18 | 5 |
| 비교예 2 | 920 | 10.8 | 33.3 | 0.32 | 0.25 | 20 |
| 비교예 3 | 940 | 13.3 | 30.8 | 0.43 | 0.33 | -10 |
| 비교예 4 | 960 | 15 | 28.3 | 0.53 | 0.38 | 27 |
| 비교예 5 | 980 | 15.6 | 22.1 | 0.71 | 0.43 | 26 |
| 비교예 6 | 1040 | 11.5 | 25.2 | 0.46 | 0.35 | 32 |
| 비교예 7 | 1040 | 15.1 | 18.9 | 0.80 | 0.48 | 60 |
| 비교예 8 | 1040 | 18.3 | 22.3 | 0.82 | 0.45 | 80 |
| 비교예 9 | 1040 | 14.9 | 17.7 | 0.84 | 0.46 | 39 |
| 비교예 10 | 1,100 | 냉간압연 중 파단 발생으로 측정 불가 | -13 | |||
Claims (7)
- 중량%로, C: 0.01% 이하(0은 제외), N: 0.01% 이하(0은 제외), Cr: 11 내지 30%, Ni: 1.0% 이하(0은 제외), Mn: 1.0% 이하(0은 제외), Cu: 1.0% 이하(0 제외), Si: 1.0% 이하(0 제외), Mo: 1.0% 이하(0 제외), Al: 0.1% 이하(0 제외), 나머지는 Fe 및 불가피한 불순물을 포함하고, 하기 식 (1)을 만족하는 자화특성이 향상된 페라이트계 스테인리스강.
식 (1): Texture factor: V{001}/V{111} ≥ 1.0
(여기서, V{001} 은 모든 방위의 합에 대한 {001} 집합조직의 부피분율을, V{111} 은 모든 방위의 합에 대한 {111} 집합조직의 부피분율 의미한다.) - 제1항에 있어서,
하기 식 (2)를 만족하는 자화특성이 향상된 페라이트계 스테인리스강.
식 (2): γmax: 420C+470N+23Ni+9Cu+10Mn+180-(11.5Cr+11.5Si+12Mo+52Al) - 제1항에 있어서,
Cr: 14 내지 21%인 자화특성이 향상된 페라이트계 스테인리스강. - 제1항에 있어서,
B50이 0.5T 이상인 자화특성이 향상된 페라이트계 스테인리스강. - 중량%로, C: 0.01% 이하(0은 제외), N: 0.01% 이하(0은 제외), Cr: 11 내지 30%, Ni: 1.0% 이하(0은 제외), Mn: 1.0% 이하(0은 제외), Cu: 1.0% 이하(0 제외), Si: 1.0% 이하(0 제외), Mo: 1.0% 이하(0 제외), Al: 0.1% 이하(0 제외), 나머지는 Fe 및 불가피한 불순물을 포함하는 슬라브를 열간 압연하는 단계;
상기 열간 압연재를 1,000℃ 이상 1,100℃ 미만의 온도범위에서 열연 소둔하는 단계; 및
상기 열간 압연재를 냉간 압연하는 단계;를 포함하는 자화특성이 향상된 페라이트계 스테인리스강의 제조 방법. - 제5항에 있어서,
상기 냉간 압연재는 하기 식 (1)을 만족하는 자화특성이 향상된 페라이트 스테인리스강의 제조 방법.
식 (1): Texture factor: V{001}/V{111} ≥ 1.0
(여기서, V{001} 은 모든 방위의 합에 대한 {001} 집합조직의 부피분율을, V{111} 은 모든 방위의 합에 대한 {111} 집합조직의 부피분율 의미한다.) - 제5항에 있어서,
상기 냉간 압연재는 하기 식 (2)를 만족하는 자화특성이 향상된 페라이트 스테인리스강의 제조 방법.
식 (2): γmax: 420C+470N+23Ni+9Cu+10Mn+180-(11.5Cr+11.5Si+12Mo+52Al)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2022107220A (ja) * | 2021-01-08 | 2022-07-21 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板 |
| EP4261296A4 (en) * | 2020-12-08 | 2025-08-06 | Nippon Steel Stainless Steel Corp | FERRITIC STAINLESS STEEL SHEET AND PRODUCTION METHOD |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20140080348A (ko) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | 내리징성이 우수한 페라이트계 스테인리스강 및 그 제조 방법 |
| JP2018184660A (ja) * | 2017-04-25 | 2018-11-22 | Jfeスチール株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20140080348A (ko) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | 내리징성이 우수한 페라이트계 스테인리스강 및 그 제조 방법 |
| JP2018184660A (ja) * | 2017-04-25 | 2018-11-22 | Jfeスチール株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4261296A4 (en) * | 2020-12-08 | 2025-08-06 | Nippon Steel Stainless Steel Corp | FERRITIC STAINLESS STEEL SHEET AND PRODUCTION METHOD |
| JP2022107220A (ja) * | 2021-01-08 | 2022-07-21 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板 |
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