CN102939394A - 生产奥氏体钢方法 - Google Patents
生产奥氏体钢方法 Download PDFInfo
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- CN102939394A CN102939394A CN2011800284065A CN201180028406A CN102939394A CN 102939394 A CN102939394 A CN 102939394A CN 2011800284065 A CN2011800284065 A CN 2011800284065A CN 201180028406 A CN201180028406 A CN 201180028406A CN 102939394 A CN102939394 A CN 102939394A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 230000003111 delayed effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 53
- 238000000137 annealing Methods 0.000 claims description 39
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 238000005097 cold rolling Methods 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000007598 dipping method Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000009749 continuous casting Methods 0.000 claims description 9
- 238000005246 galvanizing Methods 0.000 claims description 9
- 238000005098 hot rolling Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 description 17
- 239000001257 hydrogen Substances 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 229910000756 V alloy Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910000937 TWIP steel Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003450 growing effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
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- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- C21D8/0226—Hot rolling
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0436—Cold rolling
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
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- C21D8/0473—Final recrystallisation annealing
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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Abstract
本发明提供了一种生产在耐受延迟开裂方面优异的奥氏体钢片材的方法以及由此获得的钢。
Description
本发明涉及生产在耐受延迟开裂方面优异的奥氏体钢片材的方法。
鉴于燃料经济性和碰撞情况下的安全性,在汽车工业中越来越多地使用高强度钢。这就需要使用结合有高拉伸强度和高延展性的结构材料。奥氏体合金包含作为主要元素的铁、碳和高水平的锰,可以将其热轧或冷轧和且其具有可超过1000MPa的强度。这些钢的变形模式取决于堆垛层错能:对于足够高的堆垛层错能,观测到的机械变形的模式为孪晶,这将导致高的加工硬化性。通过充当对于位错传播的障碍,孪晶增加流动应力。然而,当堆垛层错能超过某一限度时,完美位错的滑移变为主要的变形机制,且加工硬化降低。众所周知,对延迟开裂的敏感性随着机械强度增加,特别是某些冷成型操作之后,这是因为高残余拉伸应力在变形后往往得到保持。与可能存在于金属中的原子氢结合,这些压力往往导致延迟开裂,即是说在变形本身后一定时间发生的开裂。氢可能逐渐因扩散到晶体晶格缺陷例如基体/夹杂物界面、孪晶界和晶界等而逐渐累计。正是在后者情形中,当在一段时间后达到临界浓度时,氢可变得有害。对于恒定的晶粒尺寸,达到临界水平所需的时间取决于移动氢的初始浓度、残余应力浓度场的强度和氢扩散的动力学。
在特别的情况下,可以在钢生产的一些阶段例如化学或电化学酸洗、特定气氛下的退火、电镀或热浸镀锌中引进少量的氢。使用的润滑油和脂的随后机加工操作也可能在这些物质于高温下分解后导致氢产生。
本发明的目的是提供一种生产在耐受延迟开裂方面优异的奥氏体钢片材的方法。
本发明的目的还是提供一种生产具有增加的屈服应力和优异的可焊性的奥氏体钢片材的方法。
本发明的再一目的是提供一种生产奥氏体钢片材的方法,该方法与用于这种类型钢的常规路线相比是能量有效和简单的。
通过提供一种生产在耐受延迟开裂方面优异的奥氏体钢片材的方法实现这些目的中的一个或多种,该方法包括
-铸造锭,或连铸板坯,或连铸薄板坯或带坯连铸带材,其组成以重量计包含:
-0.50%-0.80%C
-10-17%Mn
-至少1.0%Al
-最多0.5%Si
-最多0.020%S
-最多0.050%P
-50-200ppm N
-0.050-0.25%V
余量为铁和生产固有的不可避免的杂质;
-通过将所述锭,连铸板坯,或连铸薄板坯或带坯连铸带材热轧到所需的热轧厚度提供热轧带材。
-将该热轧带材冷轧到所需的最终厚度,
-在这样的过程中连续退火该冷轧带材:该过程包括以加热速率Vh加热该带材到退火温度Ta持续退火时间ta,然后以冷却速率Vc进行冷却,其中Ta是750-850℃。
通过使用高铝含量,钢的SFE增加。降低SFE的元素如硅的任何不利影响被铝的添加所抵消。此外,铝降低了碳在奥氏体中的活性和扩散性,这减少了形成碳化物的驱动力。作为必要合金化添加剂而添加的钒,形成碳化物。如果钒碳化物的尺寸和分布是合适的和在此时,这些钒碳化物行充当氢吸收体(sink)。因此,增加的铝含量对于控制钒碳化物析出是重要的,因为它防止钒碳化物因降低的碳活性和扩散性(因铝的存在所致)而粗化。发明人发现,需要至少1.0%Al和0.050-0.25%的V来实现这一点。较低铝含量导致太粗的钒碳化物,从而使它们作为氢吸收体是低效的,和需要将钒的量控制在所述值之间以实现足够数量的小析出物。较高的V值导致析出物的早期形核,从而不可避免地使析出物粗化和变少,而低于0.050%V的值仅导致极少的析出物,即使它们足够细。退火处理是重要的,因为它控制钒碳化物的析出和引起冷变形的显微组织(由冷轧引起)再结晶,从而导致细晶粒组织。在优选实施方案中,硅含量是非常低的,即杂质级别。原则上,铝含量只受如下事实的限制:根据本发明的钢是奥氏体钢。在一个实施方案中,最大铝含量为5%。优选地,铝含量是至少1.25和/或最多3.5%、更优选至少1.5和/或最多2.5%。
在一个实施方案中,最大退火温度Ta是825℃或甚至800℃。在一个实施方案中,冷却速率Vc为10-100℃/s。优选的冷却速率是20-80℃/s。加热速率优选是3-60℃/s。退火时间Ta优选是15-300秒。
在优选的实施方案中,最大退火温度Ta为775-795℃(即785±10℃)。
优选地,在冷轧前已经将钢带材材料进行酸洗。在冷轧前酸洗(常常)是必要的,以去除氧化物,以防止氧化物的轧入。优选地,从热轧带材材料或带式连铸带材材料生产所述冷轧带材材料。
在本发明的优选实施方案中,在连续退火后在以冷却率Vc冷却过程中,使带材通过热浸浴用于通过将带材热浸到构成金属涂层的金属的熔融浴中提供金属涂层。该过程导致了生产金属涂覆的钢带材的非常经济和快速的过程。金属涂层可以是任何已知的常见涂层,如锌或锌合金,其中锌可与元素如铝和/或镁进行合金化。
在本发明的另一实施方案中,在连续退火后将带材酸洗,其中通过如下方式对带材提供金属涂层:在退火后酸洗,然后加热到低于连续退火温度的温度,然后使带材通过热浸浴用于通过将带材热浸到构成金属涂层的金属的熔融浴中来提供金属涂层。如果上述的经济性工艺不是优选的,那么此替代性工艺是可用的。对于某些特定金属涂层的附着力而言,这可能有问题,因此酸洗处理可能是必要的。酸洗后,不必要也不希望将带材加热到高于Ta。优选地,加热温度低于保持Ta。
使用此方法,将带材材料仅加热到对于形成封闭的抑制层足够高的温度。该温度低于出于冶金学原因(例如再结晶以影响力学性能)而必要的通常的连续退火温度。由此,减少了钢带材材料表面上的氧化物的形成。
优选地,低于连续退火温度的温度是400-600℃。在该温度范围内,氧化物的形成大大减少,且将带材材料充分加热用于随后的热浸镀锌。
根据优选的实施方案,在加热到低于连续退火温度的温度的过程中或之后,且在热浸镀锌之前,带材材料中的Fe被还原。通过还原带材材料,还原了所形成的铁氧化物,并且以这种方法在热浸镀锌之前显著减少了带材材料表面上存在的氧化物的量。
优选地,使用H2N2、更优选使用5-30%H2N2在还原气氛中进行还原。已发现,使用这种气氛,可除去大多的氧化物。
根据优选的实施方案,在加热带材材料期间或之后,且在还原带材材料之前,在气氛中提供过量的O2。提供过量的氧改善了热浸镀锌之前的钢带材材料的表面品质,和因而改善了涂覆在AHSS带材材料上的锌层的品质。假设氧在带材材料的表面处和内部结合AHSS带材材料中的合金化元素,并且以这种方式形成的氧化物不能迁移到带材材料表面。
然后,在氧化之后的还原气氛将会还原在带材材料处的氧化物,和以这种方式在带材材料表面处的氧化物的量大大减少,或甚至几乎不存在,如实验已所示。优选地,以0.05-5%O2提供过量的O2。发现该数量的氧就足够了。
在本发明的优选实施方案中,将根据本发明的V合金化的钢带材材料进行热轧,酸洗和冷轧,然后连续退火到根据本发明的温度和再次酸洗。然后,在退火线中将带材材料加热到527℃的温度,然后在约450℃在镀锌浴中热浸镀锌。
在带材材料加热到527℃温度的过程中,提供1%的过量O2。在如此高温下提供氧使得不只在带材材料的表面处形成氧化物,还在表面下的一定深度结合合金化元素。在提供氧后,使用约5%H2N2将带材材料还原。带材材料的还原从表面去除了氧化物,但形成在表面下方的氧化物保留在原处,且并不能迁移到表面。
因此,通过将表面进行还原,有效地去除了氧化物,且没有新的氧化物可以形成在表面处。这些氧化物在未去除时导致锌层与基材的不良附着力,在材料弯曲时导致裸点、剥落和在锌层中形成裂纹。据认为,通过常规还原,合金化元素在合金化温度下很快地迁移到表面,因此在热浸镀锌发生之前再次在表面处形成氧化物。不管确切机制可能是什么,已发现使用此方法降低或几乎消除了在V合金化的TWIP钢上的热浸镀锌的锌层中发现的氧化物的量。
在本发明的实施方案中,冷轧压下率为10到90%,更优选30-85,甚至更优选45-80%。
在本发明的实施方案中,在向带材提供金属涂层之前或之后,以0.5-10%的压下率将退火的带材冷轧硬化。
在本发明实施方案中,钒含量是0.06-0.22%。
在本发明的第二个方面,通过权利要求1到6中任何一项的方法生产提供带材或片材,其中钢优选地提供有金属涂层。在本发明的优选实施方案中,将带材或片材用于生产汽车的内部或外部零件或轮子或液压用途。
现在,将进一步通过以下的非限制性的实施例解释发明:
在此研究中使用的材料的化学组成如表1所示。
表1所研究的材料的化学组成(包括典型的半工业无硅参比材料)(都以重量%计,余量:Fe和杂质)
编码 | C | Si | Mn | Al | V | S | N | P |
8V-1 | 0.74 | 0.36 | 13.8 | 2.2 | 0.080 | 0.011 | 0.011 | 低* |
8V-2 | 0.74 | 0.36 | 13.8 | 2.3 | 0.086 | 0.011 | 0.009 | 低 |
8V-3 | 0.74 | 0.31 | 13.7 | 2.3 | 0.084 | 0.011 | 0.007 | 低 |
10V | 0.71 | 0.22 | 13.4 | 2.4 | 0.106 | 0.010 | 0.011 | 低 |
16V | 0.72 | 0.25 | 14.5 | 2.3 | 0.160 | 0.001 | 0.006 | 0.008 |
21V | 0.69 | 0.21 | 14.9 | 2.6 | 0.213 | 0.010 | - | 0.005 |
无Si | 0.70 | <0.20 | 14.5 | 2.5 | 杂质 | 0.004 | 0.007 | 0.030 |
*低=杂质水平
选择精轧温度(FRT)以确保变形的显微组织的再结晶,且将卷取温度保持低于500℃以避免碳化物析出。再结晶不仅取决于FRT,也取决于时间,取决于自热轧过程中的最后再结晶事件所积累的轧制应变,且取决于应变率。
将所有热冷轧的材料50%冷轧并随后再结晶退火。使用不同退火周期来确定最佳退火参数。请注意,对于所有样品,延伸率为45%-50%,但非再结晶的样品(36-45%)和退火的材料920℃(65%)的延伸率除外。由于认为强度更重要,所以以下讨论将侧重于此。
对于至多750℃的退火温度,由于增加份数的再结晶材料和可能一些晶粒生长,材料会软化。在这些温度下,析出效应受限。在775℃至800℃退火的(完全再结晶)材料之间的差异是小的,因为认为析出在对于使晶粒生长最小化的该温度区域内是最佳的。基于这些观察,推荐的退火温度是785℃±10℃。
表1在50%冷轧和退火后材料的机械性能
V合金化级别上的延迟开裂和应力腐蚀开裂结果显示对于裂纹形成的较低敏感度,因为在较高温度下将材料退火。对于应力腐蚀开裂敏感性,V添加在750℃的退火温度以及更高退火温度下显然是有利的。
对V-合金进行耐受点焊试验。与无Si的非V合金化材料相比,焊缝中的热裂在很大程度上得到降低。
Claims (15)
1.一种生产在耐受延迟开裂方面优异的奥氏体钢片材的方法,该方法包括
-铸造锭,或连铸板坯,或连铸薄板坯或带坯连铸带材,其组成以重量计包含:
-0.50%-0.80%C
-10-17%Mn
-至少1.0%Al
-最多0.5%Si
-最多0.020%S
-最多0.050%P
-50-200ppm N
-0.050-0.25%V
余量为铁和生产所固有的不可避免的杂质;
-通过将所述锭,连铸板坯,连铸薄板坯或带坯连铸带材热轧到所需的热轧厚度提供热轧带材,
-将该热轧带材冷轧到所需的最终厚度,
-在这样的过程中连续退火该冷轧带材:该过程包括以加热速率Vh加热该带材到退火温度Ta持续退火时间ta,然后以冷却速率Vc进行冷却,其中Ta是750-850℃。
2.根据权利要求1的方法,其中铝含量为至少1.25和/或至多3.5%。
3.根据权利要求1的方法,其中在连续退火后在以冷却率Vc冷却过程中,使带材通过热浸浴用于通过将带材热浸到构成金属涂层的金属的熔融浴中提供金属涂层。
4.根据权利要求1的方法,其中在连续退火后将带材酸洗,且其中通过如下方式对带材提供金属涂层:在退火后酸洗,然后加热到低于连续退火的温度,然后使带材通过热浸浴用于通过将带材热浸到构成金属涂层的金属的熔融浴中提供金属涂层。
5.根据前述权利要求中任一项的方法,其中冷轧压下率为10-90%,更优选30-85%,更加优选45-80%。
6.根据前述权利要求中任一项的方法,其中在对带材提供金属涂层之前或之后,以0.5-10%的压下率冷轧硬化退火的带材。
7.根据前述权利要求中任一项的方法,其中钒含量为0.06-0.22%。
8.根据前述权利要求中任一项的方法,其中:
■冷却速率Vc为10-100℃/s,和/或其中
■加热速率Vh优选为3-60℃/s,和/或其中
■退火时间ta优选为15-300秒。
9.根据权利要求1、2或4到8中任一项的方法,其中在连续退火后将带材酸洗,且其中通过如下方式对带材提供金属涂层:在连续退火后酸洗,然后加热到400-600℃的温度,然后使带材通过热浸浴用于通过将带材热浸到构成金属涂层的金属的熔融浴中提供金属涂层。
10.根据权利要求9的方法,其中在加热到低于连续退火温度的温度的过程中或之后,且在热浸镀锌之前,将带材材料中的Fe进行还原,优选地,其中使用H2N2、更优选使用5-30%H2N2在还原气氛中进行还原。
11.根据权利要求10的方法,其中在加热带材材料期间或之后,且在还原带材材料之前,在气氛中提供过量的O2,优选地,以0.05-5%O2的量提供过量的O2。
12.根据前述权利要求中任一项的方法,其中将热轧后的卷取温度保持低于500℃和/或退火温度Ta为785℃±10℃。
13.由根据权利要求1到12中任一项的方法生产的带材或片材,其中钢优选提供有金属涂层。
14.根据权利要求13的带材或片材的用途,用于生产汽车的内部或外部零件或轮子。
15.根据权利要求13的带材或片材的用途,用于液压成形应用。
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- 2011-06-10 JP JP2013513585A patent/JP6009438B2/ja active Active
- 2011-06-10 EP EP11725880.6A patent/EP2580359B1/en active Active
- 2011-06-10 WO PCT/EP2011/002868 patent/WO2011154153A1/en active Application Filing
- 2011-06-10 BR BR112012031466-1A patent/BR112012031466B1/pt not_active IP Right Cessation
- 2011-06-10 US US13/699,516 patent/US20130118647A1/en not_active Abandoned
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105229177A (zh) * | 2013-03-04 | 2016-01-06 | 奥托昆普尼罗斯文有限公司 | 用于制造具有高延伸率的超高强度材料的方法 |
CN109154051A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 具有奥氏体基体的twip钢板 |
CN109154055A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109154052A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109154048A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 用于制造具有奥氏体显微组织的twip钢板的方法 |
CN109154049A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109154049B (zh) * | 2016-05-24 | 2021-08-03 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109154048B (zh) * | 2016-05-24 | 2021-12-31 | 安赛乐米塔尔公司 | 用于制造具有奥氏体显微组织的twip钢板的方法 |
Also Published As
Publication number | Publication date |
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ZA201300240B (en) | 2014-03-26 |
EP2580359B1 (en) | 2017-08-09 |
BR112012031466A2 (pt) | 2016-11-08 |
EP2580359A1 (en) | 2013-04-17 |
JP2013534566A (ja) | 2013-09-05 |
KR20130111214A (ko) | 2013-10-10 |
JP6009438B2 (ja) | 2016-10-19 |
US20130118647A1 (en) | 2013-05-16 |
KR101900963B1 (ko) | 2018-09-20 |
WO2011154153A1 (en) | 2011-12-15 |
BR112012031466B1 (pt) | 2019-07-09 |
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