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An investigation on the mechanical property changing mechanism of high speed steel by pulsed magnetic treatment
Liping Ma
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 卷: 609 页: 16-25
2014
Issue609Pages:16-25
AbstractAn investigation was carried out to analyze and quantify the mechanical property changing mechanism of high speed steel by pulsed magnetic treatment. Specifically, a pulsed magnetic treatment system was designed and applied to the tool material treatmentThe micro-hardness and red hardness were measured to quantitatively investigate the influence of magnetic treatment on the mechanical properties. Results showed that high speed steel material possessed better mechanical properties using the proposed pulsed magnetic treatmentof which the maximum increase of micro-hardness was 50 HV. Also,the red hardness with low temperature could be improved. Moreover, the influence of magnetic treatment conditions on the micro-hardness change rate was investigated. It was shown that the micro-hardness change rate first increases and then stabilizes with the increase of magnetic field intensity, and it decreases with the increase of magnetization time. Ultimately, the dislocation densities were calculated by XRD data analysis according to the Williamson-Hall method and the interaction between magnetic field and dislocation was discussed in detail. Results revealed that the dislocation density of high speedsteel material increased by 24% after pulsed magnetic treatmentThe dislocation multiplication and motion induced by magnetic field led to the increase ofdislocation density, which was the main reason of the increase in micro-hardness. The dislocation pile-up mechanism was responsible for the treatment effectsof different magnetic treatment conditions. The dislocation configuration determined from TEM micrographs was in good agreement with the X-ray results andthe discussion of dislocation mechanisms. (C) 2014 Elsevier B.V. All rights reserved.
KeywordPulsed Magnetic Treatment Micro-hardness Carbon-steel Red Hardness Dislocation Multiplication Dislocation Density Tool Life
DOI10.1016/j.msea.2014.04.100
Language英语
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Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/15452
Collection精密感知与控制研究中心_精密感知与控制
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Liping Ma. An investigation on the mechanical property changing mechanism of high speed steel by pulsed magnetic treatment[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 卷: 609 页: 16-25,2014(609):16-25.
APA Liping Ma.(2014).An investigation on the mechanical property changing mechanism of high speed steel by pulsed magnetic treatment.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 卷: 609 页: 16-25(609),16-25.
MLA Liping Ma."An investigation on the mechanical property changing mechanism of high speed steel by pulsed magnetic treatment".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 卷: 609 页: 16-25 .609(2014):16-25.
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