Cajner, Franjo and Leskovšek, Vojteh and Pustaić, Dragan (2013) Correlation between microstructure, hardness and fracture toughness of heat-treated high-speed steel. = Correlation between microstructure, hardness and fracture toughness of heat-treated high-speed steel. In: The 30th DANUBIA-ADRIA Symposium on Advances in Experimental Mechanics, 25-28.09.2013., Primošten, Hrvatska.
Full text not available from this repository.Abstract
The correlation between microstructure, hardness and fracture toughness of vacuum heat-treated high-speed steel AISI M2 was investigated. Our intention was to investigate the influence of microstructural parameters such as the volume fraction of undissolved eutectic carbides, their mean diameter, the mean distance between the carbides, as well as the volume fraction of retained austenite in the matrix, on the above mentioned mechanical and fracture properties. The experimental investigations were performed on the specimens which had the following chemical composition (mass content in %): 0.89% C, 0.20% Si, 0.26% Mn, 0.027% P, 0.001% S, 3.91% Cr, 4.74% Mo, 1.74% V and 6.10% W. By means of heat treatment, the microstructure of high-speed steel can be changed. Due to secondary hardening under different tempering conditions, high-speed steels can obtain the same hardness but different microstructures and consequently different fracture toughness. Therefore, the optimization of the parameters of vacuum heat treatment of high-speed steels is a worthwhile task.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | Vacuum heat treatment, High-speed steel, Microstructure, Volume fraction of undissolved eutectic carbides, Volume fraction of retained austenite, Correlation between hardness and fracture toughness. |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding TECHNICAL SCIENCE > Mechanical Engineering TECHNICAL SCIENCE > Aviation, rocket and space technology |
| Divisions: | 1000 Department of Materials > 1020 Chair of Heat Treatment and Surface Engineering 200 Department of Engineering Mechanics > 210 Chair of Mechanics and Strength of Materials |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Citations SCOPUS: | 0 (17.01.2017.) |
| Date Deposited: | 20 Sep 2016 08:49 |
| Last Modified: | 17 Jan 2017 12:44 |
| URI: | http://repozitorij.fsb.hr/id/eprint/6468 |
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