CN112501515A - 一种1300MPa级高强高塑低成本热轧钢 - Google Patents
一种1300MPa级高强高塑低成本热轧钢 Download PDFInfo
- Publication number
- CN112501515A CN112501515A CN202011370607.0A CN202011370607A CN112501515A CN 112501515 A CN112501515 A CN 112501515A CN 202011370607 A CN202011370607 A CN 202011370607A CN 112501515 A CN112501515 A CN 112501515A
- Authority
- CN
- China
- Prior art keywords
- strength
- steel
- hot rolled
- plasticity
- mpa
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 description 17
- 229910001566 austenite Inorganic materials 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 238000005728 strengthening Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000717 retained effect Effects 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- URRHWTYOQNLUKY-UHFFFAOYSA-N [AlH3].[P] Chemical compound [AlH3].[P] URRHWTYOQNLUKY-UHFFFAOYSA-N 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010731 rolling oil Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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 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
- C21D8/0226—Hot rolling
-
- 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
- C22C38/04—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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- 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
- C21D2211/001—Austenite
-
- 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
- C21D2211/008—Martensite
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- 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 Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
本发明公开了一种1300MPa级高强高塑低成本热轧钢,属于热轧极高强钢领域,化学成分以重量百分比计:C:0.12~0.22%,Si:1.0~2.0%,Mn:2.0~3.0%,Al:0.8~1.8%,P≤0.015%,S≤0.005%,Re:0.002~0.004%,Ti:0.02‑0.07%,余量为Fe及不可避免的杂质。与现有技术相比较,本发明用于商用车与载重车等零部件生产,有利于零件的高强减薄与塑性成形。
Description
技术领域
本发明涉及热轧高强钢领域,特别是一种适用于抗拉强度1300MPa级高强高塑低成本的热轧钢板及钢带及其生产方法。
背景技术
近年来,随着国家对汽车领域节能与环保排放标准的不断提高,汽车行业对热轧钢板提出了强度更高、塑性更好、表面质量更优等综合特性要求,以达到高强减薄、节能减排、降低成本的目的。
通常,抗拉强度在1300MPa以上的热轧高强钢,多采用Ni-Mo-Ti扩散,进而形成细小的Ni3Mo、Ni3Ti、Fe2Mo等沉淀析出相,在变形过程中,这些析出相会与位错、层错发生强烈的交互作用,从而达到提高材料强度的目的。如:中国发明专利《一种稀土超强钢及其制备方法》(CN201811558118.0)利用组分:Ni 13.00~16.00%,Al 0.30~4.00%,Mo 0~4.00%,Nb 0.60~0.80%,C 0.03~0.08%,B 0.01~0.02%,Mn2.10~5.50%,W 0.10~0.20%,稀土0.005~0.10%,Fe余量,来进行极高强钢生产;其机理在于溶质原子通过上坡扩散形成Ni-Mo-Ti富集区,进而形成细小的Ni3Mo、Ni3Ti、Fe2Mo等沉淀析出相,在变形过程中,这些析出相会与位错、层错发生强烈的交互作用,从而达到提高材料强度的目的。但以上制备方式存在以下缺陷:①但随强度增加,共格畸变非均匀分布,从而增大材料在变形过程中产生裂纹的倾向,使该合金在具有很高强度的同时,无法同时保持较好的塑性,不能满足高强减薄、塑性加工的要求;②合金元素的大量使用导致成本也大大升高,限制了其广泛使用。
发明内容
本发明的技术任务是针对以上现有技术的不足,提供一种抗拉强度1300MPa级高强度高塑性热轧钢生产方法,用于促进车辆、机械、建筑、电力、公路等领域零部件轻量化高强减薄。
本发明解决其技术问题的技术方案是:一种1300MPa级高强高塑低成本热轧钢,其特征在于:化学成分以重量百分比计:C:0.12~0.22%,Si:1.0~2.0%,Mn:2.0~3.0%,Al:0.8~1.8%,P≤0.015%,S≤0.005%,Re:0.002~0.004%,Ti:0.02-0.07%,余量为Fe及不可避免的杂质。
上述Al/Re比值在240~450之间。
上述P/Re比值在1.6~3之间。
与现有技术相比较,本发明具有以下技术效果:
1、本发明从组织相变强化设计原理出发,采用超高强度的化学成分设计,通过超快冷及润滑轧制工艺,获得有利于强度增加与塑性改善的马氏体+铁素体+适量残余奥氏体及细晶强化组织。钢中残余奥氏体在外力作用下,转变为马氏体,可以显著提高强度;
2、因残余奥氏体吸收外界应力,可以缓解钢中裂纹萌生而获得良好的塑性;
3、润滑轧制工艺,可以有效降低轧制负荷,有利于薄规格轧制与板型控制;同时,采用超快速冷细晶强化,提高强度、改善塑性;
4、没有添加铌、铬等成本高的元素,可以明显降低成本;
5、屈服强度ReL≥1000MPa、抗拉强度Rm≥1300MPa、断后伸长率A≥13%,与创新前材料相比,强度更高、塑性明显增加,且成本低、表面质量优,其推广应用潜力大,经济效益明显。
具体实施方式
下面结合具体实施方式对本发明进一步说明。
本发明用于生产一种抗拉强度1300MPa级高强度高塑性热轧带钢,该带钢的化学成分以重量百分比计包含有C:0.12~0.22%,Si:1.0~2.0%,Mn:2.0~3.0%,Al:0.8~1.8%,P≤0.015%,S≤0.005%,Re:0.002~0.004%,Ti:0.02-0.07%,余量为Fe及不可避免的杂质。
其元素及含量的原理如下:
C:可显著提高强度,具有间隙固溶强化作用;也可以增加奥氏体稳定性,获得残余奥氏体。但C含量不宜过高,以保证成形性能与焊接性能。本发明的C含量0.12~0.22%。
Si:可通过固溶强化提高强度,也能够抑制锰和磷偏聚,还可提高奥氏体中碳含量,有利于获得残余奥氏体,但Si含量太高会影响钢的塑性。但本发明中硅含量在1.0-2.0%。
Mn:可以通过固溶强化提高强度;可以降低钢的相变温度,细化晶粒;还可以增加奥氏体稳定性,有利于获得残余奥氏体。但Mn含量过高会增加成本,同时增加钢中带状组织。本发明中Mn含量在2.0~3.0%。
P:在钢中容易形成偏析,容易产生高温裂纹,也容易增加低温裂纹敏感性,降低材料的塑性。本发明中P含量在0.015%以下。
S:在钢中生成硫化物夹杂,严重影响钢的力学性能。本发明要求S含量在0.005%以下。
Re:在钢中与磷等低熔点有害杂质元素形成熔点较高的化合物,也可以抑制这些夹杂在晶界上的偏析,从而提高材料的塑性。本发明Re含量在0.002-0.004%。
Al:在钢中与N原子结合,形成AlN,具有细晶强化作用;同时,也可以形成残余奥氏体,具有相变强化作用,同时改善塑性。现有技术中,Al含量一般控制在1%以内,原因是低碳钢中铝加入量过多时,会促进钢的石墨化,减少合金相中的碳溶浓度,影响强度。并且使钢的晶粒粗化,恶化钢的力学性能,且其晶体的解理极弱,影响钢的热加工性能、焊接性能和切削加工性能。本申请中加入Re,可以和铝形成熔点约1800℃的化合物,且该化合物主要位于奥氏体晶内,可以减少奥氏体晶界上铝磷共晶的数量,从而可减轻Al的有害作用,提高钢力学性能。因此本发明Al含量可以提高到0.8-1.8%。确保Al/Re比值在240~450之间,P/Re比值在1.6~3之间,超出该范围则无法拮抗抑制相应的负面影响。
Ti:微合金化元素,具有显著的析出强化效果。本发明Ti含量在0.02-0.07%
本发明没有添加成本高的Nb、Cr、Mo等元素。
本发明中所述的抗拉强度1300MPa级高强度高塑性热轧带钢的生产方法包括:转炉冶炼、LF精炼、板坯连铸、板坯加热、高压水除鳞、润滑轧制、控制冷却、低温卷取,具体工艺步骤如下所述:
(1)冶炼工序:
铁水→转炉冶炼→LF精炼→连铸→板坯;
(2)加热工艺:
板坯采用冷坯装炉,加热温度在1180~1250℃,加热时间在170~210min。冷坯装炉可以增加残余奥氏体数量,而残余奥氏体在后续受到压应力和拉应力作用下,可以转变为马氏体。
优化方案中,采取三段加热+一段均热方式,其中三段加热温度分别为:850-1050℃、1120-1220℃、1180-1250℃,均热温度为1200-1250℃。
(3)轧制工艺:
粗轧为5道次可逆轧制,中间坯厚度为30~32mm;粗轧前高压水除鳞,压力30Pa。
精轧为7道次连续轧制,终轧温度为790~830℃,F2-F7精轧机架间采用润滑轧制:为避免润滑液产生的带钢轧制时自然咬入困难,在7个架轧机中,对1300MPa级的高强钢,第一个机架投入润滑液流量为最大流量的5%,其它机架的润滑流量为70-80%。而轧制油的皂化值,可选55(mgKOH·g-1)。
(4)冷却工艺:
采用全段超快冷却,冷却速率≥50℃/s;
(5)卷取工艺:
采用低温卷取,卷取温度为380~430℃。
为了更好地比较本申请配方和现有技术,进行了对比试验。
具体各个实施例和对比例中钢的化学成分(wt%),如下表所示:
分组 | C | Si | Mn | P | S | Al | Re | Ti |
实施例1 | 0.19 | 1.00 | 2.50 | 0.008 | 0.005 | 1.220 | 0.005 | 0.053 |
实施例2 | 0.22 | 1.51 | 2.53 | 0.010 | 0.003 | 1.810 | 0.004 | 0.024 |
实施例3 | 0.12 | 2.00 | 2.00 | 0.009 | 0.004 | 1.590 | 0.004 | 0.068 |
实施例4 | 0.18 | 1.53 | 3.00 | 0.006 | 0.003 | 0.830 | 0.002 | 0.046 |
对比例1 | 0.18 | 1.60 | 2.10 | 0.012 | 0.005 | 1.790 | 0.002 | 0.054 |
对比例2 | 0.15 | 1.80 | 2.90 | 0.013 | 0.005 | 1.440 | - | 0.053 |
本发明各个实施例和对比例中钢的制造工艺参数,如下表所示:
本发明各个实施例和对比例中钢的拉伸性能测试结果,如下表所示(产品性能检测采用《金属材料室温拉伸试验方法GB/T228》国家标准):
从上表可以看出,实施例1~4采用本专利成分和工艺生产的低碳热轧板带,力学性能和表面质量优良(屈服强度Rel:1030~1065MPa,抗拉强度Rm:1340~1365MPa,断后伸长率A 14.0~15.0%)。生产工序少,省去普通冷轧和退火工艺,能耗和成本低。屈服强度ReL≥1000MPa、抗拉强度Rm≥1300MPa、断后伸长率A≥14%,与现有技术相比,强度更高、塑性明显增加。
而对比例1的组分虽然添加了Re成分,但没有控制Al/Re比例,对比例2的组分没有加入Re,虽然这两个组在后期同样的控轧控冷,但是无法拮抗抑制高Al带来相应的负面影响,钢的晶粒粗化,力学性能恶化,断后伸长率低明显低于各实施例组,且耐磨性差。
需要说明的是,本发明的特定实施方案已经对本发明进行了详细描述,对于本领域的技术人员来说,在不背离本发明的精神和范围的情况下对它进行的各种显而易见的改变都在本发明的保护范围之内。
Claims (3)
1.一种1300MPa级高强高塑低成本热轧钢,其特征在于:化学成分以重量百分比计:C:0.12~0.22%,Si:1.0~2.0%,Mn:2.0~3.0%,Al:0.8~1.8%,P≤0.015%,S≤0.005%,Re:0.002~0.004%,Ti:0.02-0.07%,余量为Fe及不可避免的杂质。
2.根据权利要求1所述的1300MPa级高强高塑低成本热轧钢,其特征在于:所述Al/Re比值在240~450之间。
3.根据权利要求1所述的1300MPa级高强高塑低成本热轧钢,其特征在于:所述P/Re比值在1.6~3之间。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011370607.0A CN112501515B (zh) | 2020-11-30 | 2020-11-30 | 一种1300MPa级高强高塑低成本热轧钢 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011370607.0A CN112501515B (zh) | 2020-11-30 | 2020-11-30 | 一种1300MPa级高强高塑低成本热轧钢 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112501515A true CN112501515A (zh) | 2021-03-16 |
CN112501515B CN112501515B (zh) | 2022-08-09 |
Family
ID=74967632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011370607.0A Active CN112501515B (zh) | 2020-11-30 | 2020-11-30 | 一种1300MPa级高强高塑低成本热轧钢 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112501515B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114150232A (zh) * | 2021-11-25 | 2022-03-08 | 香港理工大学深圳研究院 | 一种共格和非共格纳米相复合强化的超高强度马氏体时效钢及其制造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103703157A (zh) * | 2011-07-29 | 2014-04-02 | 新日铁住金株式会社 | 形状保持性优异的高强度钢板、高强度镀锌钢板及它们的制造方法 |
CN103732781A (zh) * | 2011-07-29 | 2014-04-16 | 新日铁住金株式会社 | 合金化热浸镀锌层和具有该层的钢板以及其制造方法 |
JP2017145469A (ja) * | 2016-02-18 | 2017-08-24 | 新日鐵住金株式会社 | 高強度鋼板の製造方法 |
WO2020179295A1 (ja) * | 2019-03-06 | 2020-09-10 | 日本製鉄株式会社 | 熱延鋼板 |
WO2020203934A1 (ja) * | 2019-03-29 | 2020-10-08 | 日本製鉄株式会社 | 高強度熱間圧延鋼板 |
CN111971408A (zh) * | 2018-03-30 | 2020-11-20 | 日本制铁株式会社 | 钢板及其制造方法 |
-
2020
- 2020-11-30 CN CN202011370607.0A patent/CN112501515B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103703157A (zh) * | 2011-07-29 | 2014-04-02 | 新日铁住金株式会社 | 形状保持性优异的高强度钢板、高强度镀锌钢板及它们的制造方法 |
CN103732781A (zh) * | 2011-07-29 | 2014-04-16 | 新日铁住金株式会社 | 合金化热浸镀锌层和具有该层的钢板以及其制造方法 |
JP2017145469A (ja) * | 2016-02-18 | 2017-08-24 | 新日鐵住金株式会社 | 高強度鋼板の製造方法 |
CN111971408A (zh) * | 2018-03-30 | 2020-11-20 | 日本制铁株式会社 | 钢板及其制造方法 |
WO2020179295A1 (ja) * | 2019-03-06 | 2020-09-10 | 日本製鉄株式会社 | 熱延鋼板 |
WO2020203934A1 (ja) * | 2019-03-29 | 2020-10-08 | 日本製鉄株式会社 | 高強度熱間圧延鋼板 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114150232A (zh) * | 2021-11-25 | 2022-03-08 | 香港理工大学深圳研究院 | 一种共格和非共格纳米相复合强化的超高强度马氏体时效钢及其制造方法 |
CN114150232B (zh) * | 2021-11-25 | 2022-11-29 | 香港理工大学深圳研究院 | 一种共格和非共格纳米相复合强化的超高强度马氏体时效钢及其制造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN112501515B (zh) | 2022-08-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6466582B2 (ja) | 降伏強度800MPa級高強度鋼及びその製造方法 | |
CN110079740B (zh) | 一种高韧性热轧530MPa级汽车冷冲压桥壳钢板及其制造方法 | |
WO2020062564A1 (zh) | 一种超高钢q960e厚板及制造方法 | |
US20220411907A1 (en) | 690 mpa-grade medium manganese steel medium thick steel with high strength and low yield ratio and manufacturing method therefor | |
CN108342655B (zh) | 一种调质型抗酸管线钢及其制造方法 | |
CN109023069B (zh) | NbC纳米颗粒强化X80塑性管用钢板及其制造方法 | |
WO2019119725A1 (zh) | 一种布氏硬度大于550hb的高级别低合金耐磨钢板及制造方法 | |
EP4414473A1 (en) | High-strength steel with good weather resistance and manufacturing method therefor | |
WO2019218135A1 (zh) | 屈服强度1000MPa级低屈强比超高强钢及其制备方法 | |
CN110358970B (zh) | 屈服强度1100MPa级的焊接结构贝氏体高强钢及其制备方法 | |
CN109136756B (zh) | NbC纳米颗粒强化X90塑性管用钢板及其制造方法 | |
CN109023068B (zh) | Vc纳米颗粒强化x90塑性管用钢板及其制造方法 | |
CN113249641A (zh) | 一种100~120mm Q460D特厚高强钢及其制备方法 | |
CN109207847B (zh) | 一种低碳当量高扩孔率1180MPa级冷轧钢板及其制造方法 | |
CN109957710B (zh) | 一种含v大变形x80m管线钢板及其制造方法 | |
CN109957709B (zh) | 一种含v大变形x70m管线钢板及其制造方法 | |
CN108728728B (zh) | 一种具有极低屈强比的高锰钢及其制造方法 | |
CN112746224A (zh) | 一种690MPa级海洋工程用钢板及其制造方法 | |
CN108588569B (zh) | 一种屈服强度≥450MPa的海洋工程用钢及其制备方法 | |
CN108486482B (zh) | 综合性能优良的高屈服强度热轧酸洗钢板及其生产方法 | |
CN109112402B (zh) | Vc纳米颗粒强化x80塑性管用钢板及其制造方法 | |
CN102418047B (zh) | 一种非调质处理耐疲劳的钢板及其制造方法 | |
CN112501515B (zh) | 一种1300MPa级高强高塑低成本热轧钢 | |
CN110983158B (zh) | 一种550MPa级中锰钢板及制造方法 | |
CN115627423B (zh) | 一种1600MPa级的热轧卷板及其生产方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A 1300MPa grade high-strength, high plasticity, and low-cost hot-rolled steel Effective date of registration: 20231215 Granted publication date: 20220809 Pledgee: Rizhao Bank Co.,Ltd. Pledgor: RIZHAO STEEL HOLDING GROUP Co.,Ltd. Registration number: Y2023980072204 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right |