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Controlling the Thermal Stability of a Bainitic Structure by Alloy Design and Isothermal Heat Treatment.

作者信息

Królicka Aleksandra, Caballero Francisca Garcia, Zalecki Władysław, Kuziak Roman, Rozmus Radosław

机构信息

Department of Metal Forming, Welding and Technology, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-371 Wroclaw, Poland.

Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), 28040 Madrid, Spain.

出版信息

Materials (Basel). 2023 Apr 7;16(8):2963. doi: 10.3390/ma16082963.

DOI:10.3390/ma16082963
PMID:37109799
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10146538/
Abstract

The aim of this work was to develop a novel bainitic steel that will be specifically dedicated to achieving a high degree of refinement (nano- or submicron scale) along with increased thermal stability of the structure at elevated temperatures. The material was characterized by improved in-use properties, expressed as the thermal stability of the structure, compared to nanocrystalline bainitic steels with a limited fraction of carbide precipitations. Assumed criteria for the expected low martensite start temperature, bainitic hardenability level, and thermal stability are specified. The steel design process and complete characteristics of the novel steel including continuous cooling transformation and time-temperature-transformation diagrams based on dilatometry are presented. Moreover, the influence of bainite transformation temperature on the degree of structure refinement and dimensions of austenite blocks was also determined. It was assessed whether, in medium-carbon steels, it is possible to achieve a nanoscale bainitic structure. Finally, the effectiveness of the applied strategy for enhancing thermal stability at elevated temperatures was analyzed.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/b9c4383ce353/materials-16-02963-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/fd6e961837cf/materials-16-02963-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/4a4feb7e7f09/materials-16-02963-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/6521cda71598/materials-16-02963-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/fbbd97f684d0/materials-16-02963-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/ebcb29504072/materials-16-02963-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/bb23ed6837ca/materials-16-02963-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/601a444aadc8/materials-16-02963-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/9cc1b70d4095/materials-16-02963-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/20115d6cd487/materials-16-02963-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/5867d57ec7a9/materials-16-02963-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/c74170c76558/materials-16-02963-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/92dc6f5911ed/materials-16-02963-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/9fc1195c76ee/materials-16-02963-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/b9c4383ce353/materials-16-02963-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/fd6e961837cf/materials-16-02963-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/4a4feb7e7f09/materials-16-02963-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/6521cda71598/materials-16-02963-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/fbbd97f684d0/materials-16-02963-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/ebcb29504072/materials-16-02963-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/bb23ed6837ca/materials-16-02963-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/601a444aadc8/materials-16-02963-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/9cc1b70d4095/materials-16-02963-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/20115d6cd487/materials-16-02963-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/5867d57ec7a9/materials-16-02963-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/c74170c76558/materials-16-02963-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/92dc6f5911ed/materials-16-02963-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/9fc1195c76ee/materials-16-02963-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e28/10146538/b9c4383ce353/materials-16-02963-g014.jpg

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本文引用的文献

1
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Materials (Basel). 2022 Jan 11;15(2):539. doi: 10.3390/ma15020539.
先进高强度钢激光粉末床熔融工艺的最新进展
Materials (Basel). 2024 Sep 25;17(19):4699. doi: 10.3390/ma17194699.