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Failure analysis of heat treated HSLA wheel bolt steels

Ali Nazari (Department of Technical and Engineering Sciences, Islamic Azad University, Saveh, Iran)
Shadi Riahi (Department of Technical and Engineering Sciences, Islamic Azad University, Saveh, Iran)

Multidiscipline Modeling in Materials and Structures

ISSN: 1573-6105

Article publication date: 24 September 2010

Issue publication date: 24 September 2010

594

Abstract

Purpose

The aims of this study is to analyze failure of two types of high‐strength low‐alloy (HSLA) steels which are used in wheel bolts 10.9 grade, boron steel and chromium‐molybdenum steel, before and after heat treatment.

Design/methodology/approach

The optimum heat treatment to obtain the best tensile behavior was determined and Charpy impact and Rockwell hardness tests were performed on the two steel types before and after the optimum heat treating.

Findings

Fractographic studies show a ductile fracture for heat‐treated boron steel while indicate a semi‐brittle fracture for heat‐treated chromium‐molybdenum steel. Formation of a small boron carbide amount during heat treating of boron steel results in increment the bolt's tensile strength while the ductility did not changed significantly. In the other hand, formation of chromium and molybdenum carbides during heat treating of chromium‐molybdenum steel increased the bolt's tensile strength with a considerable reduction in the final ductility.

Originality/value

This paper evaluates failure analysis of HSLA wheel bolt steels and compares their microstructure before and after the loading regime.

Keywords

Acknowledgements

Retraction Notice: The publishers of Multidiscipline Modeling in Materials and Structures wish to retract the article “Failure analysis of heat treated HSLA wheel bolt steels” by Ali Nazari and Shadi Riahi, which appeared in volume 6, issue 3, 2010.

It has come to our attention Figure(s) 5(a), 5(b) and 5(d) appear to have been fraudulently manipulated. In addition, it appears that the co-author Shadi Riahi may not have met the criteria to be considered an author on the article.

Despite numerous attempts to contact the authors, the journal has received no response; the response of the authors would be gratefully received.

The Multidiscipline Modeling in Materials and Structures submission guidelines make it clear that only those who have made a substantial contribution to the article should be credited as authors and that figure manipulation is unacceptable. The publishers of the journal sincerely apologise to the readers.

Expression of Concern: The publisher of Multidiscipline Modeling in Materials and Structures is issuing an Expression of Concern for the following article Nazari, A. and Riahi, S. (2010), “Failure analysis of heat treated HSLA wheel bolt steels”, published in Multidiscipline Modeling in Materials and Structures, Vol. 6 No. 3, pp. 373-382, to inform readers that credible concerns have been raised regarding the accuracy of a number of images in the paper. An investigation is ongoing and is currently unresolved. Further information will be provided by Multidiscipline Modeling in Materials and Structures as it becomes available.

Citation

Nazari, A. and Riahi, S. (2010), "Failure analysis of heat treated HSLA wheel bolt steels", Multidiscipline Modeling in Materials and Structures, Vol. 6 No. 3, pp. 373-382. https://doi.org/10.1108/15736101011080114

Publisher

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Emerald Group Publishing Limited

Copyright © 2010, Emerald Group Publishing Limited

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