Article(id=1308544048126853738, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1006-4613.2026.03.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1776096000000, revisedDateStr=2026-04-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1789910812645, onlineDateStr=2026-09-20, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789910812645, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789910812645, creator=13701087609, updateTime=1789910812645, updator=13701087609, issue=Issue{id=1308544039763411521, tenantId=1146029695717560320, journalId=1268266715432370238, year='2026', volume='', issue='3', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='1781020800000', pubDateStr='2026-06-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789910810650, creator='13701087609', updateTime=1789955260152, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308730474583916647, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308730474583916648, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=24, endPage=32, ext={EN=ArticleExt(id=1308544048546284139, articleId=1308544048126853738, tenantId=1146029695717560320, journalId=1268266715432370238, language=EN, title=Control of TiN Inclusions and Process Optimization in 35MnB Steel Based on Thermodynamic Analysis, columnId=1268934131263115797, journalTitle=Angang Technology, columnName=Research and Development, runingTitle=null, highlight=null, articleAbstract=

To address the technical challenge of excessive TiN inclusions formed by residual Ti in 35MnB steel during preparation, which lead to excessive class D coarse-series non-metallic inclusions, three industrial trials were conducted on 200 mm × 240 mm section billets. The JMatPro thermodynamic software was used to calculate the solidus and liquidus temperatures of the molten steel, and the kinetics mechanism of TiN inclusion precipitation in the solid-liquid two-phase zone was analyzed to clarify the intrinsic relationship between the Ti-N solubility product and the inclusion precipitation behavior. Through macroscopic low-magnification and optical microscopy characterization, the steelmaking and rolling process parameters were optimized specifically, and the influence of process adjustments on the purity of molten steel, microstructure evolution, and mechanical properties was systematically investigated. The results showed that precisely controlling the Ti content within 0.025% to 0.030%, eliminating the RH refining nitrogenation process, and extending the vacuum holding time to more than 15 minutes could effectively reduce the amount and size of TiN inclusions, making the D-class coarse inclusions grade meet the strict requirement of ≤1.0 grade in the technical agreement. The control level of non-metallic inclusions and the stability of the end quenchability of the optimized test steel were significantly improved, and all core technical indicators such as chemical composition, low-magnification structure, and hot upset forging met the agreement requirements. The relevant test data and process experience provided engineering practice and theoretical reference for the precise control of inclusions and process optimization of high-strength wear-resistant MnB steel for construction machinery.

, authors=Lei ZHANG, authorsList=Lei ZHANG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1308544048856662636, articleId=1308544048126853738, tenantId=1146029695717560320, journalId=1268266715432370238, language=CN, title=基于热力学分析的35MnB钢TiN夹杂物控制与工艺优化, columnId=1268934131426693655, journalTitle=鞍钢技术, columnName=研究与开发, runingTitle=null, highlight=null, articleAbstract=

为解决35MnB钢在制备中因残余Ti形成的TiN夹杂物过量析出，引发D类粗系非金属夹杂物超标的技术难题，开展了3炉200 mm×240 mm断面铸坯工业试制。采用JMatPro材料热力学软件计算钢液固/液相线温度，解析TiN夹杂物在固液两相区的析出动力学机制，阐明钛氮浓度积与夹杂物析出行为的内在关联。通过宏观低倍与光学显微镜等表征，针对性优化炼钢与轧钢工艺参数，系统探究工艺调整对钢水纯净度、显微组织演变及力学性能的影响规律。结果表明，将Ti含量精准调控在0.025%~0.030%、取消RH精炼复氮工序并将真空保持时间延长至15 min以上，可有效降低TiN夹杂物的析出量与尺寸，使D类粗系夹杂物等级满足技术协议≤1.0级的严苛要求。优化后试验钢的非金属夹杂物控制水平与末端淬透性稳定性显著提升，化学成分、低倍组织、热顶锻等核心技术指标均符合协议要求，相关试验数据及工艺经验为工程机械用高强度耐磨锰硼钢的夹杂物精准调控与工艺优化提供了重要的工程实践与理论参考。

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张磊，硕士，工程师，2018年毕业于辽宁科技大学材料科学与工程专业。E-mail: 421166062@qq.com

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张磊，硕士，工程师，2018年毕业于辽宁科技大学材料科学与工程专业。E-mail: 421166062@qq.com

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