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| Failure Analysis of Cast Aluminum Alloy Cylinder Head for Vehicle |
| Received:October 29, 2017 Revised:March 15, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.03.017 |
| KeyWord:aluminum alloy cylinder head failure analysis |
| Author | Institution |
| SHE Zu-xin |
1.Southwest Research Institute of Technology and Engineering, Chongqing ; 2.Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China |
| ZHANG Kai |
1.Southwest Research Institute of Technology and Engineering, Chongqing ; 2.Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China |
| WANG Chang-peng |
1.Southwest Research Institute of Technology and Engineering, Chongqing ; 2.Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China |
| MOU Xian-liang |
1.Southwest Research Institute of Technology and Engineering, Chongqing ; 2.Chongqing Engineering Research Center for Environmental Corrosion and Protection, Chongqing , China |
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| Abstract: |
| Objective To find the cause for cracking of cast aluminum alloy cylinder head supplied by a certain motor corporation during using. Methods The failure cause for the cylinder head was analyzed by observing appearance of fracture with SEM, observing metallographic structure of fracture with metallographic microscope, testing the core hardness of cylinder head with fiber hardness tester, analyzing chemical component and testing macrostructure pinhole degree, et.al. Results Chemical component and harness of sample for aluminum alloy cylinder head met the technical requirements. There was no abnormity on metallographic structure. The macrostructure pinhole degree was controlled properly. The larger depth of parting line groove was the main cause for the failure of cylinder head. Conclusion It is suggested to further control the depth of parting line groove in production of cylinder head to avoid failure. |
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