Analysis the Failure for Earlier Fracture of 60Si2Mn Stabilizer Bar

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Abstract:

The fracture samples of spring steel stabilizer bars in 60Si2Mn were researched in this paper. Through the methods such as macro-and micro-fracture analysis, SEM fracture morphology observation, microstructure observation (surface and internal organization), and macro-hardness testing to analysis the failure causes for earlier fracture of the stabilizer bars. The results were showed that the fatigue crack source for the non-stress stabilizer bar was on the surface. The earlier fracture cause was due to the decarburized layer on the surface and the uneven organization in the internal, which lead to the fatigue resistance at the non-severe stress, was greatly decreased. And the fatigue crack of stabilizer bar in the normal stress was originated at the deformation on the surface in the processing.

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813-816

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September 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] W. Guofan, in: Material Forming and Failure, edited by Chemical Industry Press (2002), p.215~219. (In Chinese).

Google Scholar

[2] W. Hui, M. Huasheng, in: The Failure Analysis of 45 Steel Automobile Stable Bar Fracture, edited by Precision Forming Engineering (2010), p: 72~75. (In Chinese).

Google Scholar

[3] P. Wenyi, Z. Jian, in: Failure Analysis of Spring Steel Stabilizer Bar, edited by the Heat Treatment of Metals (2010), p: 93~95. (In Chinese).

Google Scholar

[4] C. Juan, L. Yazheng, P. Hui, in: Reheating Austenitizing Temperature of Spring Steel 60Si2MnA for Railway, edited by Journal of Iron and Steel Research (2008), p: 62~67.

DOI: 10.1016/s1006-706x(08)60268-x

Google Scholar

[5] Larsson M, Melander A, Nordgren A, in: Effect of Inclusions on Fatigue Behavior of Hardened Spring Steel, edited by Materials Science and Technology (1993), p: 235~245.

DOI: 10.1179/mst.1993.9.3.235

Google Scholar