EP3239331A1 - Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür - Google Patents

Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür Download PDF

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Publication number
EP3239331A1
EP3239331A1 EP15873589.4A EP15873589A EP3239331A1 EP 3239331 A1 EP3239331 A1 EP 3239331A1 EP 15873589 A EP15873589 A EP 15873589A EP 3239331 A1 EP3239331 A1 EP 3239331A1
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Prior art keywords
steel
strength steel
brittle crack
central portion
crack arrestability
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Granted
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EP15873589.4A
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English (en)
French (fr)
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EP3239331B1 (de
EP3239331A4 (de
Inventor
Hak-Cheol Lee
Sung-Ho Jang
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Posco Holdings Inc
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Posco Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/001—Heat treatment of ferrous alloys containing Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving particular fabrication steps or treatments of ingots or slabs
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying 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
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/05—Grain orientation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING 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
    • C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying 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
    • C21D8/0263—Modifying 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

Definitions

  • the present disclosure relates to a high-strength steel having excellent brittle crack arrestability and a method of manufacturing the same.
  • brittle crack arrestability referring to stability of a structure
  • a high-strength steel is applied to a major structure such as a ship, or the like
  • cases in which guaranteed levels of brittle crack arrestability are required have increased.
  • a low temperature transformation phase is generated in a central portion, a phenomenon in which brittle crack arrestability is significantly reduced occurs. Therefore, it may be difficult to improve brittle crack arrestability of an extremely thick high-strength steel.
  • An aspect of the present disclosure is to provide a high-strength steel having excellent brittle crack arrestability.
  • a high-strength steel having excellent brittle crack arrestability includes 0.05 wt% to 0.1 wt% of carbon (C), 0.9 wt% to 1.5 wt% of manganese (Mn), 0.8 wt% to 1.5 wt% of nickel (Ni), 0.005 wt% to 0.1 wt% of niobium (Nb), 0.005 wt% to 0.1 wt% of titanium (Ti), 0.1 wt% to 0.6 wt% of copper (Cu), 0.1 wt% to 0.4 wt% of silicon (Si), 100 ppm or less of phosphorous (P), 40 ppm or less of sulfur (S), and the remainder being iron (Fe) and other inevitably contained impurities, the high-strength steel having a microstructure including one structure selected from the group consisting of a single-phase structure of ferrite, a single-phase structure of bainite, a complex-
  • the contents of Cu and Ni may be set such that a Cu/Ni weight ratio may be 0.6 or less, in detail, 0.5 or less.
  • yield strength may be 390 MPa or more.
  • a method of manufacturing a high-strength steel having excellent brittle crack arrestability includes: reheating a slab at 950°C to 1100°C, the slab including 0.05 wt% to 0.1 wt % of carbon (C), 0.9 wt% to 1.5 wt% of manganese (Mn), 0.8 wt% to 1.
  • a crystal grain size of a central portion of the bar in a thickness direction before the finish rolling after the rough rolling may be 200 ⁇ m or less, preferably 150 ⁇ m or less, and more preferably 100 ⁇ m or less.
  • a reduction ratio during the finish rolling may be set such that a ratio of a slab thickness (mm)/a steel sheet thickness (mm) after finish rolling may be 3.5 or above, preferably 3.8 or above.
  • the cooling of the steel sheet may be performed at a cooling rate of a central portion of the steel sheet in a thickness direction of 2°C/s or more.
  • the cooling of the steel sheet may be performed at an average cooling rate from 3°C/s to 300°C/s.
  • a high-strength steel having high yield strength and excellent brittle crack arrestability may be obtained.
  • FIG. 1 is an image of a central portion of Inventive steel 1 in a thickness direction, captured with an optical microscope.
  • the inventors conducted research and experiments into improving yield strength and brittle crack arrestability of a thick steel having a thickness of 50 mm or more, and the present disclosure has been proposed based on the results thereof.
  • a steel composition, a structure, a texture, and manufacturing conditions of a steel are controlled, so yield strength and brittle crack arrestability of a steel having a thick thickness are further improved.
  • a main concept in the present disclosure is as follows.
  • a high-strength steel having excellent brittle crack arrestability includes 0.05 wt% to 0.1 wt% of C, 0.9 wt% to 1.5 wt% of Mn, 0.8 wt% to 1.5 wt% of Ni, 0.005 wt% to 0.1 wt% of Nb, 0.005 wt% to 0.1 wt% of Ti, 0.1 wt% to 0.6 wt% of Cu, 0.1 wt% to 0.4 wt% of Si, 100 ppm or less of P, 40 ppm or less of S, and the remainder being iron (Fe) and other inevitably contained impurities, and has a microstructure including one structure selected from the group consisting of a single-phase structure of ferrite, a single-phase structure of bainite, a complex-phase structure of ferrite and bainite, a complex-phase structure of ferrite and pearlite, and a complex-phase structure of ferrite
  • the content of C exceeds 0.10%, due to the generation of a large amount of martensite-austenite constituent (MA), high strength of ferrite itself, and generation of a large amount of a low temperature transformation phase, or the like, low temperature toughness may be reduced.
  • the content of C is preferably limited to 0.05% to 0.10%, more preferably limited to 0.061% to 0.091%, and most preferably limited to 0.065% to 0.085%.
  • Mn is a useful element for improving strength due to solid solution strengthening and for improving hardenability to allow a low temperature transformation phase to be generated.
  • Mn is preferably added in an amount of 0.9% or more.
  • Ni is an important element, allowing dislocation cross-slip to be easily performed at a low temperature to improve impact toughness, and improving hardenability to improve strength.
  • Ni is preferably added in an amount of 0.8% or more.
  • an upper limit of the content of Ni is preferably limited to 1.5%.
  • Nb is precipitated in the form of NbC or NbCN, thereby improving strength of a base material.
  • Cu is a main element in improving strength of a steel by improving hardenability and causing solid solution strengthening, and is a main element in increasing a yield strength due to generation of ⁇ (epsilon) Cu precipitate when tempering is applied.
  • Cu is preferably added in an amount of 0.1% or more.
  • an upper limit of the content of Cu is preferably limited to 0.6%.
  • iron (Fe) may be provided as a remainder thereof.
  • fraction of pearlite is preferably limited to 20% or less.
  • the grain size of a structure of a central portion of the steel is refined to be 30 ⁇ m or less, so strength is improved due to strengthening by grain refinement, while brittle crack arrestability is improved by significantly reducing the generation and propagation of cracks.
  • an area ratio of a (100) plane forming an angle within 15 degrees with respect to a plane perpendicular to a rolling direction is significantly reduced.
  • the steel has a thickness of 50 mm or more, preferably has a thickness of 50 mm to 100 mm, and more preferably has a thickness of 80 mm to 100 mm.
  • the slab, having been reheated, is rough rolled.
  • a total cumulative reduction ratio during rough rolling is preferably set to be 40% or more.
  • a microstructure, yield strength, an average grain size of a central portion measured in EBSD, an area ratio of a (100) plane forming an angle within 15 degrees with respect to a plane perpendicular to a rolling direction in a region of the high-strength steel in a range of 20% of an overall steel thickness based on a position equal to 1/2 of the steel thickness, a Kca value (a brittle crack arrestability coefficient) were investigated, and a result thereof is illustrated in Table 2.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
EP15873589.4A 2014-12-24 2015-12-21 Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür Active EP3239331B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20140189132 2014-12-24
PCT/KR2015/014054 WO2016105062A1 (ko) 2014-12-24 2015-12-21 취성균열전파 저항성이 우수한 고강도 강재 및 그 제조방법

Publications (3)

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EP3239331A1 true EP3239331A1 (de) 2017-11-01
EP3239331A4 EP3239331A4 (de) 2017-11-08
EP3239331B1 EP3239331B1 (de) 2020-10-28

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EP15873589.4A Active EP3239331B1 (de) 2014-12-24 2015-12-21 Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür

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Country Link
US (1) US20170327922A1 (de)
EP (1) EP3239331B1 (de)
JP (1) JP6788589B2 (de)
KR (1) KR101746999B1 (de)
CN (1) CN107109597B (de)
WO (1) WO2016105062A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018024910A (ja) * 2016-08-09 2018-02-15 Ｊｆｅスチール株式会社 高強度厚鋼板およびその製造方法
EP3561112A4 (de) * 2016-12-22 2019-10-30 Posco Ultradickes stahlmaterial mit hervorragenden nrl-dwt-eigenschaften des oberflächenteils und verfahren zur herstellung davon

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3239332B1 (de) * 2014-12-24 2019-11-20 Posco Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür
US10822671B2 (en) 2014-12-24 2020-11-03 Posco High-strength steel having superior brittle crack arrestability, and production method therefor
JP6536514B2 (ja) * 2016-08-09 2019-07-03 Ｊｆｅスチール株式会社 脆性亀裂伝播停止特性に優れた構造用高強度厚鋼板およびその製造方法
KR102209561B1 (ko) 2018-11-30 2021-01-28 주식회사 포스코 취성균열전파 저항성이 우수한 극후물 강재 및 그 제조방법
KR102209547B1 (ko) * 2018-12-19 2021-01-28 주식회사 포스코 취성균열개시 저항성이 우수한 구조용 극후물 강재 및 그 제조방법
JP7616164B2 (ja) * 2021-07-19 2025-01-17 Ｊｆｅスチール株式会社 鋼板およびその製造方法

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CN108130479A (zh) * 2011-02-08 2018-06-08 杰富意钢铁株式会社 长脆性裂纹传播停止特性优异的板厚为50mm以上的厚钢板及其制造方法
JP5304925B2 (ja) * 2011-12-27 2013-10-02 Ｊｆｅスチール株式会社 脆性亀裂伝播停止特性に優れた構造用高強度厚鋼板およびその製造方法
KR101681491B1 (ko) * 2011-12-27 2016-12-01 제이에프이 스틸 가부시키가이샤 취성 균열 전파 정지 특성이 우수한 고강도 후강판
TWI463018B (zh) * 2012-04-06 2014-12-01 Nippon Steel & Sumitomo Metal Corp 具優異裂縫阻滯性之高強度厚鋼板
JP2013221190A (ja) * 2012-04-17 2013-10-28 Nippon Steel & Sumitomo Metal Corp 脆性亀裂伝播停止性能に優れた高強度厚鋼板
JP2013221189A (ja) * 2012-04-17 2013-10-28 Nippon Steel & Sumitomo Metal Corp 脆性亀裂伝播停止性能に優れた高強度厚鋼板
KR20130134333A (ko) * 2012-05-30 2013-12-10 현대제철 주식회사 고강도 강판 및 그 제조 방법
KR20140098900A (ko) * 2013-01-31 2014-08-11 현대제철 주식회사 고강도 극후물 강판 및 그 제조 방법
EP3239332B1 (de) * 2014-12-24 2019-11-20 Posco Hochfester stahl mit hervorragender sprödbruchstablität und herstellungsverfahren dafür
US10822671B2 (en) * 2014-12-24 2020-11-03 Posco High-strength steel having superior brittle crack arrestability, and production method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018024910A (ja) * 2016-08-09 2018-02-15 Ｊｆｅスチール株式会社 高強度厚鋼板およびその製造方法
EP3561112A4 (de) * 2016-12-22 2019-10-30 Posco Ultradickes stahlmaterial mit hervorragenden nrl-dwt-eigenschaften des oberflächenteils und verfahren zur herstellung davon

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JP6788589B2 (ja) 2020-11-25
CN107109597A (zh) 2017-08-29
CN107109597B (zh) 2020-01-31
KR101746999B1 (ko) 2017-06-15
WO2016105062A8 (ko) 2016-11-24
EP3239331B1 (de) 2020-10-28
EP3239331A4 (de) 2017-11-08
JP2018503744A (ja) 2018-02-08
KR20160078926A (ko) 2016-07-05
US20170327922A1 (en) 2017-11-16
WO2016105062A1 (ko) 2016-06-30

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