Morphology and Formation of Chrysanthemum-like Pearlite in 100Mn13 Steel During Aging Treatment
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 result...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/15/1/65 |
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| Summary: | 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 M<sub>7</sub>C<sub>3</sub> lamellae and ferrite lamellae, maintaining an orientation relationship (OR) of (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mn>3</mn><mo stretchy="true">¯</mo></mover></mrow></semantics></math></inline-formula><inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mn>3</mn></semantics></math></inline-formula><inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>12</mn></mrow></semantics></math></inline-formula>)<sub>M7C3</sub>‖(<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0</mn><mo> </mo><mover accent="true"><mn>2</mn><mo stretchy="true">¯</mo></mover><mo> </mo><mn>4</mn></mrow></semantics></math></inline-formula>)<sub>α</sub>, [<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>4</mn><mo> </mo><mn>0</mn><mo> </mo><mn>1</mn></mrow></semantics></math></inline-formula>]<sub>M7C3</sub>‖[<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>5</mn><mo> </mo><mn>2</mn><mo> </mo><mn>1</mn></mrow></semantics></math></inline-formula>]<sub>α</sub>. 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. |
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| ISSN: | 2073-4352 |