Article(id=1198266569739567461, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, articleNumber=1009-5438(2023)02-0045-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1677427200000, receivedDateStr=2023-02-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763618612941, onlineDateStr=2025-11-20, pubDate=1682352000000, pubDateStr=2023-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763618612941, onlineIssueDateStr=2025-11-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763618612941, creator=13701087609, updateTime=1763618612941, updator=13701087609, issue=Issue{id=1198266568997175650, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='2', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763618612765, creator=13701087609, updateTime=1763619383107, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1198269800108618470, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1198269800108618471, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=45, endPage=49, ext={EN=ArticleExt(id=1198266569999614312, articleId=1198266569739567461, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Development of 420 MPa Grade High-strength Weather-resistant H Beam for Residential Building, columnId=1198265195702354688, journalTitle=Science & Technology of Baotou Steel, columnName=Varieties and Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
In this paper, the chemical composition and production process are designed according to the technical requirements of 420 MPa grade high-strength weather-resistant H beam for residential building as well as the performances of test steel are studied by observing the microstructure with metalloscope and transmission electron microscopy (TEM), room temperature mechanical properties and periodic immersion corrosion tests. The results showed that the fluctuation of impact toughness at room temperature for test steel was small and its toughness was good. The yield strength of three test steels with different specifications was higher than 420 MPa and corrosion resistance index (I) was 6.15~6.45, which showed good resistance to atmospheric corrosion. The microstructure of test steels was mainly consisted of ferrite and pearlite as well as the average grain size of ferrite was 25.73 μm and there was nanoscale (Cu, Cr) C precipitated phases in grain.
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文章根据民用住宅建筑用420 MPa级高强耐候H型钢技术要求进行了化学成分和生产工艺设计,并采用金相显微镜、透射电子显微镜(TEM)观察微观组织,通过室温力学性能测试、周期浸润腐蚀试验等对试验钢进行了性能研究。结果表明:试验钢在室温下冲击韧性波动较小,表现出良好的韧性。3种不同规格的试验钢的屈服强度均高于420 MPa,耐腐蚀性指数(I)在6.15~6.45之间,表现出良好的耐大气腐蚀性能。试验钢的显微组织主要由铁素体和珠光体组成,铁素体平均晶粒尺寸为25.73 μm,晶粒内存在纳米级(Cu,Cr)C析出相。
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刘丽娟(1994-),女,山西省大同市人,硕士,现从事型材产品开发工作。
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刘丽娟(1994-),女,山西省大同市人,硕士,现从事型材产品开发工作。
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钢结构,
2019,
34(2):15-25., articleTitle=耐候H型钢的材料性能和设计强度取值研究, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1198266749629072106, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, xref=null, ext=[AuthorCompanyExt(id=1198266749637460715, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, companyId=1198266749629072106, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Technical Center of Inner Mongolia Baotou Steel Union Co. , Ltd. , Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198266749650043628, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, companyId=1198266749629072106, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)])], figs=[ArticleFig(id=1198266751155798792, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=EN, label=null, caption=null, figureFileSmall=B2EDJgcTTvTEB7Sh5ZpTDQ==, figureFileBig=+zqb10XMaS/H9e6tk0T7IA==, tableContent=null), ArticleFig(id=1198266751218713353, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=CN, label=图1, caption=
试验钢的断面尺寸及取样位置 H-高度;B-宽度;t1-腹板宽度;t2-翼缘宽度;r-圆角半径
, figureFileSmall=B2EDJgcTTvTEB7Sh5ZpTDQ==, figureFileBig=+zqb10XMaS/H9e6tk0T7IA==, tableContent=null), ArticleFig(id=1198266751386485514, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=EN, label=null, caption=null, figureFileSmall=54506MAoOVsTwVUNHGyxEg==, figureFileBig=jDxI+GiUnqVpvhnyYVMTLQ==, tableContent=null), ArticleFig(id=1198266751466177291, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=CN, label=图2, caption=
试验钢与Q345B耐腐蚀性能对比, figureFileSmall=54506MAoOVsTwVUNHGyxEg==, figureFileBig=jDxI+GiUnqVpvhnyYVMTLQ==, tableContent=null), ArticleFig(id=1198266751554257676, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=EN, label=null, caption=null, figureFileSmall=cDyrz7Vzl8N6qTil7y9BMQ==, figureFileBig=cbvkApvPYY6p3UKtoSAZpw==, tableContent=null), ArticleFig(id=1198266751692669709, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=CN, label=图3, caption=
试验钢的显微组织图, figureFileSmall=cDyrz7Vzl8N6qTil7y9BMQ==, figureFileBig=cbvkApvPYY6p3UKtoSAZpw==, tableContent=null), ArticleFig(id=1198266751747195662, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=EN, label=null, caption=null, figureFileSmall=5axMa9Lh88xY0UxHpmVmiQ==, figureFileBig=1vlNFd5m+cckOOQbtidZlA==, tableContent=null), ArticleFig(id=1198266751814304527, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=CN, label=图4, caption=
第二相析出颗粒形貌及其能谱结果, figureFileSmall=5axMa9Lh88xY0UxHpmVmiQ==, figureFileBig=1vlNFd5m+cckOOQbtidZlA==, tableContent=null), ArticleFig(id=1198266751927550736, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198266569739567461, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| C | Si | Mn | P | S | Cu | Ni | Cr |
| ≤0.15 | ≤0.70 | ≤1.50 | ≤0.030 | ≤0.025 | 0.20~0.55 | 0.12~0.65 | 0.30~1.25 |
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Q420NHB钢的化学成分(质量分数) %
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| C | Si | Mn | P | S | Cu | Ni | Cr |
| ≤0.15 | ≤0.70 | ≤1.50 | ≤0.030 | ≤0.025 | 0.20~0.55 | 0.12~0.65 | 0.30~1.25 |
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屈服强度ReL /MPa | 抗拉强度Rm /MPa | 延伸率A /% | 屈强比 | 冲击功KV2 /J | 碳当量CEN /% | 耐腐蚀性指数 I |
| ≥410 | ≥520 | ≥20 | ≤0.85 | ≥34 | 0.36 | ≥6.0 |
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Q420NHB钢的性能要求
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屈服强度ReL /MPa | 抗拉强度Rm /MPa | 延伸率A /% | 屈强比 | 冲击功KV2 /J | 碳当量CEN /% | 耐腐蚀性指数 I |
| ≥410 | ≥520 | ≥20 | ≤0.85 | ≥34 | 0.36 | ≥6.0 |
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| 轧制厚度/mm | 屈服强度ReL/MPa | 抗拉强度Rm/MPa | 延伸率A/% | 屈强比 | 室温冲击功KV2/J |
| 25 | 432 | 562 | 27.93 | 0.77 | 203 |
| 35 | 424 | 557 | 24.72 | 0.76 | 185 |
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Q420NHB钢的力学性能
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| 轧制厚度/mm | 屈服强度ReL/MPa | 抗拉强度Rm/MPa | 延伸率A/% | 屈强比 | 室温冲击功KV2/J |
| 25 | 432 | 562 | 27.93 | 0.77 | 203 |
| 35 | 424 | 557 | 24.72 | 0.76 | 185 |
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| 规格 | 屈服强度ReL/MPa | 抗拉强度Rm/MPa | 延伸率A/% | 屈强比 | 室温冲击功KV2/J |
| HW200×200×8×12 | 531 | 670 | 26.0 | 0.79 | 143 |
| H508×350×16×25 | 492 | 645 | 24.2 | 0.76 | 124 |
| HW428×407×20×35 | 443 | 592 | 25.7 | 0.75 | 113 |
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Q420NHB钢的力学性能
, figureFileSmall=null, figureFileBig=null, tableContent=
| 规格 | 屈服强度ReL/MPa | 抗拉强度Rm/MPa | 延伸率A/% | 屈强比 | 室温冲击功KV2/J |
| HW200×200×8×12 | 531 | 670 | 26.0 | 0.79 | 143 |
| H508×350×16×25 | 492 | 645 | 24.2 | 0.76 | 124 |
| HW428×407×20×35 | 443 | 592 | 25.7 | 0.75 | 113 |
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| 钢种 | C | Si | Mn | P | S | Cu | Cr |
| Q345B | 0.202 | 0.485 | 1.29 | 0.020 | 0.012 | 0.017 | 0.036 |
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Q345B钢的化学成分(质量分数)%
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| 钢种 | C | Si | Mn | P | S | Cu | Cr |
| Q345B | 0.202 | 0.485 | 1.29 | 0.020 | 0.012 | 0.017 | 0.036 |
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