Article(id=1210382910763430058, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1210382907521242019, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20230103, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1766507373753, onlineDateStr=2025-12-24, pubDate=1708358400000, pubDateStr=2024-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766507373753, onlineIssueDateStr=2025-12-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766507373753, creator=13701087609, updateTime=1766507373753, updator=13701087609, issue=Issue{id=1210382907521242019, tenantId=1146029695717560320, journalId=1189873562199433220, year='2024', volume='', issue='2', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766507372980, creator=13701087609, updateTime=1766507372980, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=59, endPage=63, ext={EN=ArticleExt(id=1210382910989922479, articleId=1210382910763430058, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Research on Fatigue Fracture Mechanism of Balanced Suspension Leaf Spring Seat of Engineering Vehicle, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to address the issue of failure fracture of balance suspension leaf spring seat of engineering vehicle, this paper analyzed the balance suspension leaf spring seat by process analysis, fracture analysis, metallographic examination, strength test, hardness test and material fatigue limit testing. The results show that the material used in the balance suspension leaf spring seat meets the standard requirements, and the failure modes include multi-source high stress and low cycle bending fatigue cracking, the crack originates from the rounded root between the balance suspension leaf spring seat and the U-bolt, which is thick and easy to produce defects like shrinkage and porosity in the production process. In the structure, this position is the balance suspension leaf spring seat under the greatest stress position and a dangerous section of the part.
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何铭雪(1997—),女,工程师,学士学位,研究方向为金属材料应用及开发。
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何铭雪(1997—),女,工程师,学士学位,研究方向为金属材料应用及开发。
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何铭雪(1997—),女,工程师,学士学位,研究方向为金属材料应用及开发。
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authorNames=国家标准化管理委员会, journalName=北京, refType=null, unstructuredReference=国家标准化管理委员会.金属材料拉伸试验第1部分:室温试验方法: GB/T 228.1—2021[S].
北京: 中国标准出版社,
2022., articleTitle=null, refAbstract=null), Reference(id=1210382918531281396, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382910763430058, doi=null, pmid=null, pmcid=null, year=2014, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=中国国家标准化管理委员会, journalName=北京, refType=null, unstructuredReference=中国国家标准化管理委员会.一般工程与结构用低合金钢铸件:GB/T 14408—2014[S].
北京: 中国标准出版社,
2014., articleTitle=null, refAbstract=null), Reference(id=1210382918602584566, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382910763430058, doi=null, pmid=null, pmcid=null, year=2023, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=中国国家标准化管理委员会, journalName=北京, refType=null, unstructuredReference=中国国家标准化管理委员会.等温淬火球墨铸铁件:GB/T 24733—2023[S].
北京: 中国标准出版社,
2023., articleTitle=null, refAbstract=null), Reference(id=1210382918661304824, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382910763430058, doi=null, pmid=null, pmcid=null, year=2019, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[4], rfOrder=3, authorNames=中国国家标准化管理委员会, journalName=北京, refType=null, unstructuredReference=中国国家标准化管理委员会.金属材料布氏硬度试验第1部分:试验方法: GB/T 231.1—2018 [S].
北京: 中国标准出版社,
2019., articleTitle=null, refAbstract=null), Reference(id=1210382918720025082, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1210382910763430058, doi=null, pmid=null, pmcid=null, year=2015, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[5], rfOrder=4, authorNames=中国国家标准化管理委员会, journalName=北京, refType=null, unstructuredReference=中国国家标准化管理委员会.金属显微组织检验方法: GB/T 13298—2015 [S].
北京: 中国标准出版社,
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| 检验项 | 抗拉强度 Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% |
| 检测值 | 876、906、862 | 733、791、716 | 13.5、12.5、12.5 |
| 材料性能要求 | ≥830 | ≥650 | ≥10 |
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铸钢-平衡悬架钢板弹簧座强度检测结果
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| 检验项 | 抗拉强度 Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% |
| 检测值 | 876、906、862 | 733、791、716 | 13.5、12.5、12.5 |
| 材料性能要求 | ≥830 | ≥650 | ≥10 |
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| 检验项 | 抗拉强度 Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% |
| 检测值 | 1 141、1 102、1 104 | 919、919、910 | 8.5、-6.0、6.0 |
| 材料性能要求 | ≥1 050 | ≥700 | ≥6 |
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高牌号铸造球铁-平衡悬架钢板弹簧座强度检测结果
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| 检验项 | 抗拉强度 Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% |
| 检测值 | 1 141、1 102、1 104 | 919、919、910 | 8.5、-6.0、6.0 |
| 材料性能要求 | ≥1 050 | ≥700 | ≥6 |
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| 检验项 | 硬度/HBW |
| 检测值 | 359、360、362 |
| 材料性能要求 | 310~380 |
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高牌号铸造球铁-平衡悬架钢板弹簧座硬度检测结果
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| 检验项 | 硬度/HBW |
| 检测值 | 359、360、362 |
| 材料性能要求 | 310~380 |
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