WO2017018659A8 - 내시효성 및 소부경화성이 우수한 용융아연도금강판, 합금화 용융아연도금강판 및 그 제조방법 - Google Patents

내시효성 및 소부경화성이 우수한 용융아연도금강판, 합금화 용융아연도금강판 및 그 제조방법 Download PDF

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WO2017018659A8
WO2017018659A8 PCT/KR2016/006398 KR2016006398W WO2017018659A8 WO 2017018659 A8 WO2017018659 A8 WO 2017018659A8 KR 2016006398 W KR2016006398 W KR 2016006398W WO 2017018659 A8 WO2017018659 A8 WO 2017018659A8
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steel sheet
hot
dip
dip galvanized
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WO2017018659A1 (ko
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한상호
이제웅
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Posco Holdings Inc
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Priority claimed from KR1020160041648A external-priority patent/KR101795918B1/ko
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Priority to CN201680043417.3A priority Critical patent/CN107849668B/zh
Priority to EP16830692.6A priority patent/EP3327164B1/en
Priority to JP2018503140A priority patent/JP6619079B2/ja
Priority to US15/743,490 priority patent/US10907233B2/en
Publication of WO2017018659A1 publication Critical patent/WO2017018659A1/ko
Publication of WO2017018659A8 publication Critical patent/WO2017018659A8/ko
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
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    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236Cold rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/004Very low carbon steels, i.e. having a carbon content of less than 0,01%
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
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    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
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    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C38/32Ferrous alloys, e.g. steel alloys containing chromium with boron
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    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
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    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
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Abstract

내시효성 및 소부경화성이 우수한 용융아연도금강판, 합금화 용융아연도금강판 및 그 제조방법이 제공된다. 본 발명은, 소지강판 표면에 용융아연도금층이 형성되어 있는 용융아연도금강판으로서, 상기 소지강판은 중량%로, 탄소(C):0.002~0.012%, 망간(Mn):1.6~2.7%, 인(P):0.03% 이하(0%는 제외), 황(S): 0.01% 이하(0%는 제외), 질소(N):0.01% 이하(0%는 제외), 알루미늄(sol.Al): 0.02~0.06%, 크롬(Cr):1.0% 이하(0%는 제외), 잔부 철 및 불가피한 불순물을 포함하여 조성되고, 또한 1.3≤Mn(wt%)/(1.15×Cr(wt%))≤20.5의 관계를 만족하고, 관계식 1에 의해 정의되는 Mneq가 1.9≤Mneq≤3.9를 만족하며, 그 강 미세조직이 면적비로 95% 이상의 페라이트와 잔부 경질 제 2상으로 이루어지며, 관계식 2에 의해 정의되는 페라이트 결정립계에 존재하는 마르텐사이트 점유비율이 90% 이상이며, 그리고 관계식 3에 의해 정의되는, 소지강판 1/4t지점에서 마르텐사이트 상에서의 평균 Mn 농도 wt%(a)와 상기 마르텐사이트 상 주변 1㎛이내의 페라이트 상에서의 평균 Mn 농도 wt%(b)의 차가 0.3wt%이상인 것을 특징으로 하는 내시효성 및 소부경화성이 우수한 용융아연도금강판에 관한 것이다.
PCT/KR2016/006398 2015-07-24 2016-06-16 내시효성 및 소부경화성이 우수한 용융아연도금강판, 합금화 용융아연도금강판 및 그 제조방법 Ceased WO2017018659A1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201680043417.3A CN107849668B (zh) 2015-07-24 2016-06-16 具有优良抗时效性能和烘烤硬化性的热浸镀锌钢板和合金化热浸镀锌钢板及其生产方法
EP16830692.6A EP3327164B1 (en) 2015-07-24 2016-06-16 Hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet with excellent aging-resistance properties and bake hardenability, and method for manufacturing same
JP2018503140A JP6619079B2 (ja) 2015-07-24 2016-06-16 耐時効性及び焼付硬化性に優れた溶融亜鉛めっき鋼板、合金化溶融亜鉛めっき鋼板、及びその製造方法
US15/743,490 US10907233B2 (en) 2015-07-24 2016-06-16 Hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet with excellent aging resistance properties and bake hardenability, and method for manufacturing same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0105211 2015-07-24
KR20150105211 2015-07-24
KR1020160041648A KR101795918B1 (ko) 2015-07-24 2016-04-05 내시효성 및 소부경화성이 우수한 용융아연도금강판, 합금화 용융아연도금강판 및 그 제조방법
KR10-2016-0041648 2016-04-05

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WO2017018659A8 true WO2017018659A8 (ko) 2017-06-29

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107014681A (zh) * 2017-03-17 2017-08-04 唐山钢铁集团有限责任公司 快速评估低碳铝镇静钢抗自然时效性能的方法
KR102064962B1 (ko) * 2017-12-24 2020-02-11 주식회사 포스코 소부경화성 및 내식성이 우수한 냉연강판, 용융 아연계 도금강판 및 그 제조방법

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JP5058508B2 (ja) * 2005-11-01 2012-10-24 新日本製鐵株式会社 低降伏比型高ヤング率鋼板、溶融亜鉛めっき鋼板、合金化溶融亜鉛めっき鋼板及び鋼管、並びにそれらの製造方法
JP5332355B2 (ja) * 2007-07-11 2013-11-06 Jfeスチール株式会社 高強度溶融亜鉛めっき鋼板およびその製造方法
KR20110046689A (ko) * 2009-10-29 2011-05-06 현대제철 주식회사 저항복비 특성이 우수한 고강도 강판 및 그 제조방법
JP5765092B2 (ja) * 2010-07-15 2015-08-19 Jfeスチール株式会社 延性と穴広げ性に優れた高降伏比高強度溶融亜鉛めっき鋼板およびその製造方法
KR101543857B1 (ko) * 2013-10-31 2015-08-11 주식회사 포스코 가공성이 우수한 복합조직강판 및 그 제조방법

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