Fracture Failure Analysis of Rear Axle Suspension Control Arm in Automobile.
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| Title: | Fracture Failure Analysis of Rear Axle Suspension Control Arm in Automobile. |
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| Authors: | Li, Zheng Yuan1 gy5520444@sina.com, Gao, Yang1 lzyzhengyuan@ustl.edu.cn, Xiao, QingHe1 xqh891024@126.com |
| Source: | Metalurgija. 2026, Vol. 65 Issue 1, p28-36. 9p. |
| Subjects: | Microcracks, Cyclic loads, Automobiles, Alloy fatigue, Motor vehicle springs & suspension, Brittle fractures, Manufacturing defects |
| Abstract: | Fracture failure occurred in the control arm of the rear axle suspension of a certain vehicle model. To determine the root cause of the failure, comprehensive analyses were conducted, including macroscopic fracture examination, microscopic fracture analysis, microstructural characterization, and hardness testing. The results indicate that the failure was caused by the combined effects of material defects, improper manufacturing processes, and service loading conditions. The fundamental cause of the fracture lies in the initiation of microcracks at the interface between coarse Al-Fe-Si-Mn inclusions and the matrix under cyclic loading. The presence of a strength gradient induced by local segregation of Si further accelerated crack propagation along the inclusion/matrix interface. Under cyclic stress, the cracks propagated progressively through a fatigue striation mechanism and exhibited intergranular fracture in the precipitation-enriched zones along grain boundaries. Ultimately, these factors led to premature fatigue failure of the control arm. [ABSTRACT FROM AUTHOR] |
| Copyright of Metalurgija is the property of Croatian Metallurgical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 191623723 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Fracture Failure Analysis of Rear Axle Suspension Control Arm in Automobile. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Zheng+Yuan%22">Li, Zheng Yuan</searchLink><relatesTo>1</relatesTo><i> gy5520444@sina.com</i><br /><searchLink fieldCode="AR" term="%22Gao%2C+Yang%22">Gao, Yang</searchLink><relatesTo>1</relatesTo><i> lzyzhengyuan@ustl.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+QingHe%22">Xiao, QingHe</searchLink><relatesTo>1</relatesTo><i> xqh891024@126.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Metalurgija%22">Metalurgija</searchLink>. 2026, Vol. 65 Issue 1, p28-36. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Microcracks%22">Microcracks</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclic+loads%22">Cyclic loads</searchLink><br /><searchLink fieldCode="DE" term="%22Automobiles%22">Automobiles</searchLink><br /><searchLink fieldCode="DE" term="%22Alloy+fatigue%22">Alloy fatigue</searchLink><br /><searchLink fieldCode="DE" term="%22Motor+vehicle+springs+%26+suspension%22">Motor vehicle springs & suspension</searchLink><br /><searchLink fieldCode="DE" term="%22Brittle+fractures%22">Brittle fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+defects%22">Manufacturing defects</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fracture failure occurred in the control arm of the rear axle suspension of a certain vehicle model. To determine the root cause of the failure, comprehensive analyses were conducted, including macroscopic fracture examination, microscopic fracture analysis, microstructural characterization, and hardness testing. The results indicate that the failure was caused by the combined effects of material defects, improper manufacturing processes, and service loading conditions. The fundamental cause of the fracture lies in the initiation of microcracks at the interface between coarse Al-Fe-Si-Mn inclusions and the matrix under cyclic loading. The presence of a strength gradient induced by local segregation of Si further accelerated crack propagation along the inclusion/matrix interface. Under cyclic stress, the cracks propagated progressively through a fatigue striation mechanism and exhibited intergranular fracture in the precipitation-enriched zones along grain boundaries. Ultimately, these factors led to premature fatigue failure of the control arm. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Metalurgija is the property of Croatian Metallurgical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.64486/m.65.1.3 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 28 Subjects: – SubjectFull: Microcracks Type: general – SubjectFull: Cyclic loads Type: general – SubjectFull: Automobiles Type: general – SubjectFull: Alloy fatigue Type: general – SubjectFull: Motor vehicle springs & suspension Type: general – SubjectFull: Brittle fractures Type: general – SubjectFull: Manufacturing defects Type: general Titles: – TitleFull: Fracture Failure Analysis of Rear Axle Suspension Control Arm in Automobile. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Zheng Yuan – PersonEntity: Name: NameFull: Gao, Yang – PersonEntity: Name: NameFull: Xiao, QingHe IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 05435846 Numbering: – Type: volume Value: 65 – Type: issue Value: 1 Titles: – TitleFull: Metalurgija Type: main |
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