Next Article in Journal
Weldability and Lamellar Tearing Susceptibility of High-Strength SN 490C Steel Plates
Previous Article in Journal
Anelastic Behavior of Small Dimensioned Aluminum
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle

The Effect of Hot-Mounting on the Microstructure of an As-Quenched Auto-Tempered Low-Carbon Martensitic Steel

1
Materials and Mechanical Engineering, Centre for Advanced Steels Research, University of Oulu, 90014 Oulun yliopisto, Finland
2
Kerttu Saalasti Institute, University of Oulu, Pajatie 5, FI-85500 Nivala, Finland
*
Author to whom correspondence should be addressed.
Metals 2019, 9(5), 550; https://doi.org/10.3390/met9050550
Received: 11 April 2019 / Revised: 4 May 2019 / Accepted: 9 May 2019 / Published: 11 May 2019
  |  
PDF [2411 KB, uploaded 14 May 2019]
  |  

Abstract

The effect of hot-mounting for metallographic studies of as-quenched low-carbon martensitic steels has been studied. Hot-mounting is typically carried out at 150–200 °C, i.e., a low-temperature tempering regime. Cold- and hot-mounted specimens from an as-quenched low-carbon auto-tempered steel were examined using a scanning electron microscope and their hardness levels were also compared. It was found that hot-mounting causes additional tempering that manifests as the appearance of new precipitates in those regions that are free of auto-tempered cementite. The observations were rationalized using DICTRA simulations to calculate the potential growth of cementite. Hot-mounting was also shown to cause a small but statistically significant increase in the hardness of the martensite. View Full-Text
Keywords: hot-mounting; martensite; tempering; quenching; cementite hot-mounting; martensite; tempering; quenching; cementite
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ramesh Babu, S.; Jaskari, M.; Järvenpää, A.; Porter, D. The Effect of Hot-Mounting on the Microstructure of an As-Quenched Auto-Tempered Low-Carbon Martensitic Steel. Metals 2019, 9, 550.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top