| Fe-Cr-Co永磁合金的激光辐照效应研究 |
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| 引用本文： | 纪楗煜,杨丽,孙学银,甄良,郭立新. Fe-Cr-Co永磁合金的激光辐照效应研究[J]. 金属功能材料, 2009, 16(3): 1-4 |
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| 作者姓名： | 纪楗煜 杨丽 孙学银 甄良 郭立新 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔,150001;哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔,150001;哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔,150001;哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔,150001;哈尔滨工业大学材料科学与工程学院,黑龙江,哈尔,150001 |
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| 摘 要： | 对Fe-Cr-Co永磁合金经激光辐照后的磁性能、微观组织结构变化进行了研究和分析。结果表明,当激光功率为3000W时,随扫描速度的减慢,合金磁性能下降幅度增大,当扫描速度为600mm／min时试样接近退磁状态。激光辐照后试样表层的薄区中发生了α→γ相变。激光辐照的作用机制主要是热效应和少量的冲击力学效应以及相变引起的相变区和非相变区间的应力集中。
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| 关 键 词： | Fe-Cr-Co永磁合金 激光辐照 相变 |
Laser Irradiation of Fe-Cr-Co Permanent Magnetic Alloy |
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| JI Jian-yu,YANG Li,SUN Xue-yin,ZHEN Liang,GUO Li-xin. Laser Irradiation of Fe-Cr-Co Permanent Magnetic Alloy[J]. Metallic Functional Materials, 2009, 16(3): 1-4 |
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| Authors: | JI Jian-yu YANG Li SUN Xue-yin ZHEN Liang GUO Li-xin |
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| Affiliation: | School of Materials Science and Engineering;Harbin Institute of Technology;Harbin 150001;Heilongjiang;China |
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| Abstract: | The magnetic properties and microstructures of Fe-Cr-Co permanent magnetic alloy after laser irradiation were investigated. The results show that the magnetic properties decrease dramatically with the increase of scanning velocity, and the sample appears to be demagnetized when the scanning velocity is 600 mm/min. The α→γ phase transformation occurs in the very thin surface layer after laser irradiation. The main effects of laser irradiation are heat effect, dynamic impact effect as well as the stress concentration between the new-phase and the matrix. |
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| Keywords: | Fe-Cr-Co permanent magnetic alloy laser irradiation phase transformation |
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