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Volume 15
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10.3390/cryst15010065
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Article

Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment

by
Bo Liang
,
Jiaoyang Sun
,
Zhimin Ding
*,
Rujin Tian
and
Feng Yan
College of Materials Science and Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou District, Dalian 116028, China
*
Author to whom correspondence should be addressed.
Crystals 2025, 15(1), 65; https://doi.org/10.3390/cryst15010065
Submission received: 12 December 2024 / Revised: 8 January 2025 / Accepted: 9 January 2025 / Published: 11 January 2025
(This article belongs to the Special Issue Microstructure and Mechanical Behaviour of Structural Materials: 2nd Edition)
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Abstract

The morphology and microstructure of pearlite formed in 100Mn13 high-carbon high-manganese steel aged, respectively, at 525 °C and 650 °C after 1050 °C water toughening treatment were observed and analyzed by a scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that some pearlite colonies are chrysanthemum-like and are composed of M7C3 lamellae and ferrite lamellae, maintaining an orientation relationship (OR) of (3¯312)M7C3‖(0 2¯ 4)α, [4 0 1]M7C3‖[5 2 1]α. Moreover, the lamellae in pearlite colonies with chrysanthemum-like morphology are distributed in an emanative way, where there are protrusions and branches at the growth frontier. A growth physical model describing the growth process of chrysanthemum-like pearlite is proposed.
Keywords: high-carbon high-manganese steel; pearlite; aging treatment; orientation relationship; growth mechanism high-carbon high-manganese steel; pearlite; aging treatment; orientation relationship; growth mechanism

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MDPI and ACS Style

Liang, B.; Sun, J.; Ding, Z.; Tian, R.; Yan, F. Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment. Crystals 2025, 15, 65. https://doi.org/10.3390/cryst15010065

AMA Style

Liang B, Sun J, Ding Z, Tian R, Yan F. Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment. Crystals. 2025; 15(1):65. https://doi.org/10.3390/cryst15010065

Chicago/Turabian Style

Liang, Bo, Jiaoyang Sun, Zhimin Ding, Rujin Tian, and Feng Yan. 2025. "Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment" Crystals 15, no. 1: 65. https://doi.org/10.3390/cryst15010065

APA Style

Liang, B., Sun, J., Ding, Z., Tian, R., & Yan, F. (2025). Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment. Crystals, 15(1), 65. https://doi.org/10.3390/cryst15010065

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