Publication detail

Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

PECHOUŠEK, J. KUZMANN, E. VONDRÁŠEK, R. OLINA, A. VRBA, V. KOUŘIL, L. INGR, T. KRÁL, P. MASHLAN, M.

Original Title

Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel

Type

journal article in Web of Science

Language

English

Original Abstract

Low-alloy 42CrMo4 steels were studied by Fe-57 Mossbauer spectroscopy (MS), X-ray diffractometry (XRD), and Energy Dispersive X-ray Spectroscopy (EDS) measurements. The investigations were performed on metallographic samples, which were subjected to a series of successive grinding and polishing with a progressively finer grit. Conversion X-ray Mossbauer spectroscopy (CXMS) was used to determine the occurrence of austenite in steel samples. It is a unique method detecting the austenite content very sensitively. Six samples with different surface preparation were investigated, starting with 4.8% of austenite on an as-cut sample, and a large decrease in the retained austenite to 2.6% was observed after the first grinding of a hardened cut sample. Additionally, an unexpectedly large decrease in the austenite content to 2.3% was found due to the final polishing. A second time applied successive grinding and polishing of all samples resulted in identical austenite content determined by CXMS of approx. 5%, which proved the applicability of the CXMS method. Generally, the result calls attention to the importance of preparation of metallurgical samples by grinding and polishing where the results can vary significantly on the level of surface processing.

Keywords

steel microstructure; grinding; polishing; austenite; Mossbauer spectroscopy; 42CrMo4

Authors

PECHOUŠEK, J.; KUZMANN, E.; VONDRÁŠEK, R.; OLINA, A.; VRBA, V.; KOUŘIL, L.; INGR, T.; KRÁL, P.; MASHLAN, M.

Released

7. 1. 2022

Publisher

MDPI

Location

BASEL

ISBN

2075-4701

Periodical

Metals

Year of study

12

Number

1

State

Swiss Confederation

Pages from

1

Pages to

13

Pages count

13

URL

https://www.mdpi.com/2075-4701/12/1/119

Full text in the Digital Library

http://hdl.handle.net/11012/204604

BibTex

@article{BUT177334,
  author="Jiří {Pechoušek} and Ernö {Kuzmann} and Anna {Olina} and René {Vondrášek} and Vlastimil {Vrba} and Lukáš {Kouřil} and Tomáš {Ingr} and Petr {Král} and Miroslav {Mašláň}",
  title="Successive Grinding and Polishing Effect on the Retained Austenite in the Surface of 42CrMo4 Steel",
  journal="Metals",
  year="2022",
  volume="12",
  number="1",
  pages="1--13",
  doi="10.3390/met12010119",
  issn="2075-4701",
  url="https://www.mdpi.com/2075-4701/12/1/119"
}