Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel
Using conventional heat treatment combined with electrical pulse treatment （abbreviated EPT） ，the M2 high-speed steel was processed and the microstructure was observed using microscope， SEM and EBSD， the bending resistance of the specimen was tested. The results showed that the prior austenite grain...
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Editorial Office of Special Steel
2025-05-01
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| Series: | Teshugang |
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| Online Access: | https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00240.pdf |
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| author | Zhang Jiatao, Liu Zhaohua, Ye Lirun |
| author_facet | Zhang Jiatao, Liu Zhaohua, Ye Lirun |
| author_sort | Zhang Jiatao, Liu Zhaohua, Ye Lirun |
| collection | DOAJ |
| description | Using conventional heat treatment combined with electrical pulse treatment （abbreviated EPT） ，the M2 high-speed steel was processed and the microstructure was observed using microscope， SEM and EBSD， the bending resistance of the specimen was tested. The results showed that the prior austenite grains （abbreviated PAGs） size of sample pretreated at 1 200 ℃ was about 24 μm， the austenite grain size was significantly refined after EPT， the grain size was refined to 4.8 μm while quenching at 1 140 ℃.The maximum bending strength of the refined M2 high-speed steel reached to 3 799 MPa， which was 39% higher than quenching at 1 180 ℃ of conventional heat treatment（abbreviated CHT）.Compared with the size change of austenite grain of M2 high-speed steel during the CHT ， it can be found that the grain refinement effect produced by EPT was not due to cyclic quenching， but it should be due to the high overheat generated by rapid heating and the influence of non-thermal effect on the nucleation rate. |
| format | Article |
| id | doaj-art-9830674e57bc4e8fbf1e3e0002ac4930 |
| institution | DOAJ |
| issn | 1003-8620 |
| language | zho |
| publishDate | 2025-05-01 |
| publisher | Editorial Office of Special Steel |
| record_format | Article |
| series | Teshugang |
| spelling | doaj-art-9830674e57bc4e8fbf1e3e0002ac49302025-08-20T03:07:43ZzhoEditorial Office of Special SteelTeshugang1003-86202025-05-01463384410.20057/j.1003-8620.2024-00240Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed SteelZhang Jiatao, Liu Zhaohua, Ye Lirun0（1 Faculty of Materials and Chemical Engineering， Yibin University， Yibin 644000， China；2 Pangang Group Research Institute Co.， Ltd.， Panzhihua 610031， China）Using conventional heat treatment combined with electrical pulse treatment （abbreviated EPT） ，the M2 high-speed steel was processed and the microstructure was observed using microscope， SEM and EBSD， the bending resistance of the specimen was tested. The results showed that the prior austenite grains （abbreviated PAGs） size of sample pretreated at 1 200 ℃ was about 24 μm， the austenite grain size was significantly refined after EPT， the grain size was refined to 4.8 μm while quenching at 1 140 ℃.The maximum bending strength of the refined M2 high-speed steel reached to 3 799 MPa， which was 39% higher than quenching at 1 180 ℃ of conventional heat treatment（abbreviated CHT）.Compared with the size change of austenite grain of M2 high-speed steel during the CHT ， it can be found that the grain refinement effect produced by EPT was not due to cyclic quenching， but it should be due to the high overheat generated by rapid heating and the influence of non-thermal effect on the nucleation rate.https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00240.pdfm2 high-speed steel； grain refinement； electropulsing treatment； bending strength. |
| spellingShingle | Zhang Jiatao, Liu Zhaohua, Ye Lirun Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel Teshugang m2 high-speed steel； grain refinement； electropulsing treatment； bending strength. |
| title | Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel |
| title_full | Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel |
| title_fullStr | Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel |
| title_full_unstemmed | Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel |
| title_short | Effects of Electropulsing Treatment on the Microstructure and Mechanical Property of M2 High-speed Steel |
| title_sort | effects of electropulsing treatment on the microstructure and mechanical property of m2 high speed steel |
| topic | m2 high-speed steel； grain refinement； electropulsing treatment； bending strength. |
| url | https://www.specialsteeljournal.com/fileup/1003-8620/PDF/2024-00240.pdf |
| work_keys_str_mv | AT zhangjiataoliuzhaohuayelirun effectsofelectropulsingtreatmentonthemicrostructureandmechanicalpropertyofm2highspeedsteel |