Crack Analysis in the Sae 1117 Steel Shafts for Inclusion and Heat Treatment Combination Effect

Year 2018, , 119 - 127, 20.12.2018

Tuğrul Soyusinmez , M. Ardan Kayaaltı Oğuzcan Güzelipek , Gökçe Akkuş , Taner Kavas

https://doi.org/10.26701/ems.477224

Abstract

Surface hardening in steels is
a process in which a chemical composition is changed by thermo-chemical
processes in a determined region and, accordingly, some micro-structure is
changed. In order to obtain a harder layer than the inner region starting from
the surface to a certain depth, it is mostly provided by diffusion of elements
such as nitrogen and carbon. The process is particularly important in low and
medium carbon steels in terms of increasing wear resistance, tensile strength
and fatigue strength. The amount of elements used in cementation together with
the duration of cementation is extremely important in terms of the harmonious
change of structural differentiation.

The effect of size and
position of inclusions on the cracked structures which is affected from heat
treatment is presented in the paper.

Keywords

Inclusion, Cracks, SAE 1117, Heat Treatment

References

• [1]“Metallography and Microstructure”, Metals Handbook, American Society for Metals, Vol. 9, p. 9, 1985.
• [2] C. E. Sims, “Transactions of the Metallurgical Society of AIME”, p. 367-393, 1959.
• [3] R. Kiessling and N. Lange, “Non-Metallic Inclusions in Steel”, Second Edition, Book No. 194, 1978.
• [4] ASTM E45-18a, Standard Test Methods for Determining the Inclusion Content of Steel, ASTM International, West Conshohocken, PA, 2018, www.astm.org