Failure analysis of boron steel 27MnCrB5-2 structural bolts during tightening of railcar wheel-axle

Volume: 124, Pages: 105333 - 105333
Published: Jun 1, 2021
Abstract
Herein, a premature failure analysis of structural tempered high-strength boron steel 27MnCrB5–2 bolts (0.0006 wt B), used for railcar wheel-axle assembly, is presented. Fractographic analysis revealed a moderate ductile fracture. The applied torque produced elongation of the bolt until final fracture. A scarce presence of precipitates was observed, mainly of Ti(C,N), TiC, and inclusions such as Al2O3 and MnS. The mechanical properties of the...
Paper Details
Title
Failure analysis of boron steel 27MnCrB5-2 structural bolts during tightening of railcar wheel-axle
Published Date
Jun 1, 2021
Volume
124
Pages
105333 - 105333
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