Grain refinement in hypereutectoid steel by semi-solid processing followed by mechanical working
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F20%3A43961608" target="_blank" >RIV/49777513:23210/20:43961608 - isvavai.cz</a>
Alternative codes found
RIV/26316919:_____/20:N0000044
Result on the web
<a href="https://www.confer.cz/metal/2020" target="_blank" >https://www.confer.cz/metal/2020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/metal.2020.3473" target="_blank" >10.37904/metal.2020.3473</a>
Alternative languages
Result language
angličtina
Original language name
Grain refinement in hypereutectoid steel by semi-solid processing followed by mechanical working
Original language description
Research into new forming methods has yielded new techniques of altering the microstructure in hypereutectoid steels. An innovative approach to processing can lead to improved mechanical properties thanks to elimination of problematic and undesirable sharp-edged carbides which are very difficult to dissolve. This paper explores an unconventional method of refining the grain in and removing primary sharp-edged chromium carbides from X210Cr12 hypereutectoid tool steel. The process route applied to input stock comprised semi-solid processing followed by forming below the solidus temperature. The goal of the study was to determine the impact of the applied strain on microstructural evolution and grain refinement. In these experiments, the material was heated to above the solidus temperature and then either cooled without any other intervention or cooled to a forming temperature and then formed using five to ten deformation steps. Higher number of deformation steps led to much finer microstructure and higher hardness which increased from the initial 673 HV10 to 873 HV10. This procedure produced a very fine microstructure with grains of approximately 1 µm and a fine dispersion of chromium carbides. Since the resulting material was very hard and brittle, it had to be tempered. Tempering was performed once at 300 °C for 1 hour or twice at 530 °C, for 1 hour in each operation.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/TJ02000182" target="_blank" >TJ02000182: Improvement of wear resistance of tool steels by a combination of semi-solid treatment with subsequent hot forming and deep cryogenic treatment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2020-29th International Conference on Metallurgy and Materials, Conference Proceedings
ISBN
978-80-87294-97-0
ISSN
2694-9296
e-ISSN
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Number of pages
6
Pages from-to
228-233
Publisher name
Tanger Ltd.
Place of publication
Ostrava
Event location
Brno, Česko
Event date
May 20, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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