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EN 46200 (aluminum alloy AlSi8Cu3)
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Search Results for EN 46200 (aluminum alloy AlSi8Cu3)
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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... by eliminating the bolt hole, using a different type of bolt, or adjusting the fastening torque. cylinder head overload failure overtorquing cast aluminum alloy casting pores metallurgical analysis thermomechanical fatigue strength EN 46200 (aluminum alloy AlSi8Cu3) Introduction Cylinder...
Abstract
This article presents a failure analysis of an aluminum cylinder head on an automotive engine. During an endurance test, a crack initiated from the interior wall of a hole in the center of the cylinder head, then propagated through the entire thickness of the component. Metallurgical examination of the crack origin revealed that casting pores played a role in initiating the crack. Stress components, identified by finite element analysis, also played a role, particularly the stresses imposed by the bolt assembly leading to plastic strain. It was concluded that the failure can be prevented by eliminating the bolt hole, using a different type of bolt, or adjusting the fastening torque.
