Article(id=1188430996178350493, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, articleNumber=1009-5438(2024)04-0060-07, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717171200000, receivedDateStr=2024-06-01, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761273629469, onlineDateStr=2025-10-24, pubDate=1724515200000, pubDateStr=2024-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761273629469, onlineIssueDateStr=2025-10-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761273629469, creator=13701087609, updateTime=1761273629469, updator=13701087609, issue=Issue{id=1188430994622268045, tenantId=1146029695717560320, journalId=1185652524569653253, year='2024', volume='50', issue='4', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761273629097, creator=13701087609, updateTime=1761283356674, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1188471795062555053, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1188471795062555054, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1188430994622268045, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=60, endPage=66, ext={EN=ArticleExt(id=1188430996346122658, articleId=1188430996178350493, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Thermodynamic Analysis of Rare Earth Ce on Formation of TiN Inclusions in BT700L Steel, columnId=null, journalTitle=Science & Technology of Baotou Steel, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The automobile beam steel is mainly used for such structural components as longitudinal beam, lining beam and cross beam on the chassis of heavy truck, so its comprehensive performances are vital to the driving safety and service life of the whole vehicle. The TiN inclusions with large size seriously harm the processability and usability of BT700L steel, while the amount and morphology of inclusions in steel as well as low-temperature impact and corrosion resistance of steel could be improved by rare earth. In the paper, the effects of rare earth Ce on formation of TiN inclusions in BT700L steel are studied based on the industrial tests and thermodynamic calculations. The study results showed that pure TiN inclusions and composite inclusions of Al-O+TiN were mainly formed in the BT700L steel without Ce, while pure TiN inclusions and composite inclusions of Ce-Al-O(-S-Ca)+TiN were mainly formed in the BT700L steel with Ce. The results of thermodynamic calculations showed that precipitation temperature of TiN inclusions could be decreased with the increase of Ce content in BT700L steel so that the precipitation of TiN inclusions was restrained. Such methods as reducing contents of nitrogen and titanium in steel as well as increasing solidification rate could be taken to decrease the sizes of TiN inclusions.
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汽车大梁钢主要用作重卡汽车底盘上的纵梁、衬梁、横梁等结构件,钢的综合性能对整车的行驶安全和使用寿命至关重要。大尺寸的TiN夹杂物严重危害BT700L钢的加工和使用性能,而稀土能够改善钢中夹杂物数量、形态,提高钢的低温冲击、耐腐蚀性能等。文章基于工业试验和热力学计算,研究了稀土Ce对BT700L钢中TiN夹杂物形成的影响。研究结果表明,不加Ce的BT700L钢中形成的主要是纯TiN夹杂物和复合Al-O+TiN夹杂物,而加Ce后BT700L钢中形成的主要是纯TiN夹杂物和复合Ce-Al-O(-S-Ca)+TiN夹杂物。热力学计算结果表明BT700L钢中随Ce含量增加,TiN夹杂物的析出温度会降低,从而抑制了TiN夹杂物的析出。可采取降低钢中氮和钛含量、增大凝固速率等方式降低TiN夹杂物的尺寸。
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吴 伟(1971-),男,辽宁省本溪市人,博士,正高级工程师,现从事稀土钢冶炼工艺方面研发工作。
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1, 2, address=1. School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China
2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1189619248998658299, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, authorId=1189619248830886135, language=CN, stringName=史超, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1.内蒙古科技大学稀土产业学院, 内蒙古 包头 014010
2.内蒙古包钢钢联股份有限公司技术中心, 内蒙古 包头 014010, bio={"content":"
吴 伟(1971-),男,辽宁省本溪市人,博士,正高级工程师,现从事稀土钢冶炼工艺方面研发工作。
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吴 伟(1971-),男,辽宁省本溪市人,博士,正高级工程师,现从事稀土钢冶炼工艺方面研发工作。
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3, address=3. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1189619249187401984, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, authorId=1189619249061572861, language=CN, stringName=刘锦文, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=3.北京科技大学冶金与生态工程学院, 北京 100083, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1189619248734417139, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, xref=null, ext=[AuthorCompanyExt(id=1189619248747000052, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248734417139, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China), AuthorCompanyExt(id=1189619248751194357, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248734417139, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3.北京科技大学冶金与生态工程学院, 北京 100083)])])], keywords=[Keyword(id=1189619249330008321, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, orderNo=1, keyword=BT700L steel), Keyword(id=1189619249409700098, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, orderNo=2, keyword=rare earth Ce), Keyword(id=1189619249476808963, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, orderNo=3, keyword=TiN), Keyword(id=1189619249556500740, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, orderNo=4, keyword=inclusions), Keyword(id=1189619249703301381, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, orderNo=1, keyword=BT700L钢), Keyword(id=1189619249787187462, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, orderNo=2, keyword=稀土Ce), Keyword(id=1189619249904627975, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, orderNo=3, keyword=TiN), Keyword(id=1189619250093371656, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, orderNo=4, keyword=夹杂物)], refs=[Reference(id=1189619252366684443, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, doi=null, pmid=null, pmcid=null, year=2022, volume=48, issue=3, pageStart=31, pageEnd=34, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=张嘉华, 魏晓东, 王金超, journalName=包钢科技, refType=null, unstructuredReference=张嘉华, 魏晓东, 王金超. 稀土大梁钢BT700L生产实践[J].
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53(12):3359-3367., articleTitle=Kinetics of Vanadium Carbonitride Precipitation in steel:A Computer Model, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1189619248474370285, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, xref=null, ext=[AuthorCompanyExt(id=1189619248486953198, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248474370285, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. School of Rare Earth Industry, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1189619248495341807, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248474370285, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.内蒙古科技大学稀土产业学院, 内蒙古 包头 014010)]), AuthorCompany(id=1189619248608588016, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, xref=null, ext=[AuthorCompanyExt(id=1189619248616976625, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248608588016, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1189619248625365234, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248608588016, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.内蒙古包钢钢联股份有限公司技术中心, 内蒙古 包头 014010)]), AuthorCompany(id=1189619248734417139, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, xref=null, ext=[AuthorCompanyExt(id=1189619248747000052, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248734417139, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China), AuthorCompanyExt(id=1189619248751194357, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, companyId=1189619248734417139, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3.北京科技大学冶金与生态工程学院, 北京 100083)])], figs=[ArticleFig(id=1189619250361807113, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=k+9P1/3ephL5yztr1hxGow==, figureFileBig=csl1KU0wOtzLXFRznUc5KQ==, tableContent=null), ArticleFig(id=1189619250458276106, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=图1, caption=
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方案B中典型夹杂物, figureFileSmall=oGAWlDUHEM058ajy7pc9Og==, figureFileBig=snqtGtJt4sd8VkIFSiiu4g==, tableContent=null), ArticleFig(id=1189619251011924237, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=oDyZN3G7V312ObPOYEilFQ==, figureFileBig=C/u32gVljYd5g1ix1ORUlw==, tableContent=null), ArticleFig(id=1189619251074838798, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=图3, caption=
不同Ce含量下TiN的析出温度, figureFileSmall=oDyZN3G7V312ObPOYEilFQ==, figureFileBig=C/u32gVljYd5g1ix1ORUlw==, tableContent=null), ArticleFig(id=1189619251137753359, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=51m4BziIdUV6MB1EnhnR9g==, figureFileBig=VKcw0n/BkGQMUfP7f96NBA==, tableContent=null), ArticleFig(id=1189619251238416656, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=图4, caption=
不同温度下的Ti-N平衡曲线, figureFileSmall=51m4BziIdUV6MB1EnhnR9g==, figureFileBig=VKcw0n/BkGQMUfP7f96NBA==, tableContent=null), ArticleFig(id=1189619251326497041, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=Jv9vOmiF8j+bdLg75z4g7w==, figureFileBig=BeGEPp8jenBC5lzoXqZxbw==, tableContent=null), ArticleFig(id=1189619251418771730, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=图5, caption=
钛氮浓度积随凝固分数的变化, figureFileSmall=Jv9vOmiF8j+bdLg75z4g7w==, figureFileBig=BeGEPp8jenBC5lzoXqZxbw==, tableContent=null), ArticleFig(id=1189619251494269203, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=zMCu0CO3PdLmA90K7TvGlQ==, figureFileBig=k43GfCfoWfGPCRK3JB4AGg==, tableContent=null), ArticleFig(id=1189619251607515412, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=图6, caption=
不同冷却速率下TiN析出尺寸与凝固分数的关系, figureFileSmall=zMCu0CO3PdLmA90K7TvGlQ==, figureFileBig=k43GfCfoWfGPCRK3JB4AGg==, tableContent=null), ArticleFig(id=1189619251762704661, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | C | Si | Mn | P | S | Nb | Als | Ti | Ca | N | T.O | Ce |
| A | 0.07 | 0.07 | 1.66 | 0.008 | 0.002 | 0.048 | 0.032 | 0.074 | 0.001 1 | 0.003 3 | 0.001 8 | 0 |
| B | 0.07 | 0.07 | 1.47 | 0.013 | 0.002 | 0.030 | 0.033 | 0.083 | 0.000 8 | 0.005 5 | 0.000 5 | 0.001 |
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铸坯的化学成分(质量分数) %
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| 方案 | C | Si | Mn | P | S | Nb | Als | Ti | Ca | N | T.O | Ce |
| A | 0.07 | 0.07 | 1.66 | 0.008 | 0.002 | 0.048 | 0.032 | 0.074 | 0.001 1 | 0.003 3 | 0.001 8 | 0 |
| B | 0.07 | 0.07 | 1.47 | 0.013 | 0.002 | 0.030 | 0.033 | 0.083 | 0.000 8 | 0.005 5 | 0.000 5 | 0.001 |
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| ${e}_{i}^{j}$ | C | Si | Mn | P | Al | N | Ti | O | S | Ce | Ca |
| Ti | -0.165 | 0.05 | 0.004 3 | -0.006 4 | 0.004 | -1.8 | 0.013 | -1.8 | -0.11 | -1.23 | -0.157 |
| N | 0.13 | 0.047 | -0.021 | 0.045 | -0.028 | 0 | -0.53 | 0.05 | 0.007 | | |
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组元间一阶相互作用系数表
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| ${e}_{i}^{j}$ | C | Si | Mn | P | Al | N | Ti | O | S | Ce | Ca |
| Ti | -0.165 | 0.05 | 0.004 3 | -0.006 4 | 0.004 | -1.8 | 0.013 | -1.8 | -0.11 | -1.23 | -0.157 |
| N | 0.13 | 0.047 | -0.021 | 0.045 | -0.028 | 0 | -0.53 | 0.05 | 0.007 | | |
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| 元素 | k | Ds/(cm2·s-1) |
| Ti | 0.30[5] | 0.15e-250 000/RT[15] |
| N | 0.48[5] | 0.91e-168 000/RT[16] |
), ArticleFig(id=1189619252169552154, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1188430996178350493, language=CN, label=表3, caption=
Ti、N的扩散系数与平衡分配系数
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| 元素 | k | Ds/(cm2·s-1) |
| Ti | 0.30[5] | 0.15e-250 000/RT[15] |
| N | 0.48[5] | 0.91e-168 000/RT[16] |
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