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1. WO2020004710 - LOW CR FERRITIC STAINLESS STEEL HAVING EXCELLENT DAMPING CAPACITY AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2020/004710
Publication Date 02.01.2020
International Application No. PCT/KR2018/010699
International Filing Date 12.09.2018
IPC
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
50
with titanium or zirconium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
48
with niobium or tantalum
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
42
with copper
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
06
containing aluminium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
04
containing manganese
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
02
containing silicon
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
6
Heat treatment of ferrous alloys
C22C 38/50 (2006.01)
C22C 38/48 (2006.01)
C22C 38/42 (2006.01)
C22C 38/06 (2006.01)
C22C 38/04 (2006.01)
C22C 38/02 (2006.01)
CPC
C21D 1/26
C21D 6/00
C22C 38/00
C22C 38/02
C22C 38/04
C22C 38/06
Applicants
  • 주식회사 포스코 POSCO [KR/KR]; 경상북도 포항시 남구, 동해안로, 6261 6261, Donghaean-ro, Nam-gu Pohang-si Gyeongsangbuk-do 37859, KR
Inventors
  • 정일찬 JUNG, Il Chan; KR
  • 류승희 RYU, Seung Hee; KR
  • 이계만 LEE, Kye-Man; KR
Agents
  • 특허법인 세림 SELIM INTELLECTUAL PROPERTY LAW FIRM; 서울시 서초구 강남대로 285 태우빌딩 10층,11층 10F and 11F, Taewoo Bldg. 285, Gangnam-daero Seocho-gu Seoul 06729, KR
Priority Data
10-2018-007325026.06.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) LOW CR FERRITIC STAINLESS STEEL HAVING EXCELLENT DAMPING CAPACITY AND MANUFACTURING METHOD THEREFOR
(FR) ACIER INOXYDABLE FERRITIQUE À FAIBLE TENEUR EN CR PRÉSENTANT UNE EXCELLENTE CAPACITÉ D'AMORTISSEMENT ET SON PROCÉDÉ DE FABRICATION
(KO) 진동 감쇄능이 우수한 저CR 페라이트계 스테인리스강 및 그 제조방법
Abstract
(EN)
Disclosed are a low Cr ferritic stainless steel having excellent damping capacity to absorb external vibrational energy through precipitate control and a method for manufacturing same. A low Cr ferritic stainless steel having excellent damping capacity according to one embodiment of the present invention comprises, by weight percent: C: 0.005 to 0.01%; N: 0.005 to 0.01%; Si: 0.1 to 0.9%; Mn: 0.1 to 0.9%; Cr: 9 to 14%; Ni: 0.3% or less; P: 0.04% or less; S: 0.002% or less; Ti: 0.15 to 0.3%; Nb: 0.15 to 0.3%; Cu: 0.15 to 0.3%; Al: 0.01 to 0.05%; and the balance being Fe and inevitable impurities, wherein the low Cr ferritic stainless steel having excellent damping capacity includes 5×102/㎟ or greater of Nb-Laves phase precipitates and Cu precipitates.
(FR)
L'invention concerne un acier inoxydable ferritique à faible teneur en Cr présentant une excellente capacité d'amortissement, pour absorber l'énergie de vibration externe par une régulation des précipités et son procédé de fabrication. Un acier inoxydable ferritique à faible teneur en Cr présentant une excellente capacité d'amortissement selon un mode de réalisation de la présente invention comprend, en pourcentage en poids : C : 0,005 à 0,01 % ; N : 0,005 à 0,01 % ; Si : 0,1 à 0,9 % ; Mn : 0,1 à 0,9 % ; Cr : 9 à 14 % ; Ni : 0,3 % au maximum ; P : 0,04 % au maximum ; S : 0,002 % au maximum ; Ti : 0,15 à 0,3 % ; Nb : 0,15 à 0,3 % ; Cu : 0,15 à 0,3 % ; Al : 0,01 à 0,05 % ; et le reste étant constitué de Fe et d'impuretés inévitables, l'acier inoxydable ferritique à faible teneur en Cr présentant une excellente capacité d'amortissement comprenant 5×102/㎟ ou plus de précipités de phase de Nb-Laves et de précipités de Cu.
(KO)
석출물 제어를 통해 외부 진동에너지를 흡수하는 진동 감쇄능이 우수한 저Cr 페라이트계 스테인리스강 및 그 제조방법을 개시한다. 본 발명의 일 실시예에 따른 진동 감쇄능이 우수한 저Cr 페라이트계 스테인리스강은, 중량%로, C: 0.005 내지 0.01%, N: 0.005 내지 0.01%, Si: 0.1 내지 0.9%, Mn: 0.1 내지 0.9%, Cr: 9 내지 14%, Ni: 0.3% 이하, P: 0.04% 이하, S: 0.002% 이하, Ti: 0.15 내지 0.3%, Nb: 0.15 내지 0.3%, Cu: 0.15 내지 0.3%, Al: 0.01 내지 0.05%, 나머지 Fe 및 불가피한 불순물을 포함하고, Nb 라베스상(laves phase) 석출물 및 Cu 석출물을 5×102개/㎟ 이상 포함한다.
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