| 亚共晶高硼铁基合金的组织和性能 |
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| 引用本文： | 龚建勋,唐天顺,肖逸锋,洪波.亚共晶高硼铁基合金的组织和性能[J].湘潭大学自然科学学报,2011,33(1):103-106. |
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| 作者姓名： | 龚建勋 唐天顺 肖逸锋 洪波 |
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| 作者单位： | 湘潭大学机械工程学院; |
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| 基金项目： | 湖南省自然科学基金，湘潭大学科研启动基金 |
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| 摘 要： | 采用药芯焊丝埋弧堆焊方法制备了亚共晶高硼铁基耐磨合金.借助光学显微镜、X射线衍射、扫描电镜及电子能谱仪等手段，研究其显微组织及形貌，试验结果表明，基体组织由大量胞状铁素体＋少量马氏体组成，硬质相由M2B, M3C, M8(B,C)构成，存在于共晶组织，其中M代表Fe, Cr，V和Mn四种元素.此外，加入一定含量的钛，改变了共晶组织形态并使显微组织显著细化.磨损试验结果表明，当载荷低于34.3 N，高硼铁基合金的磨损失重与载荷成正比，但大于34.3 N时，由于磨粒微切削阻力大于其驱动力，磨损失重反而下降.
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| 关 键 词： | 高硼 堆焊 药芯焊丝 耐磨性 亚共晶 |
Microstructure and Properties of Hypoeutectic High Boron Iron-Based Alloys |
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| CONG Jian-xun,TANG Tian-shun,XIAO Yi-feng,HONG Bo.Microstructure and Properties of Hypoeutectic High Boron Iron-Based Alloys[J].Natural Science Journal of Xiangtan University,2011,33(1):103-106. |
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| Authors: | CONG Jian-xun TANG Tian-shun XIAO Yi-feng HONG Bo |
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| Institution: | GONG Jian-xun,TANG Tian-shun,XIAO Yi-feng,HONG Bo(School of Mechanical Engineering,Xiangtan University,Xiangtan 411105 China) |
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| Abstract: | Hypoeutectic high boron iron-based wear resistant alloys are hardfaced by the method of flux-cored wire submerged arc welding.The microstructure and morphology are investigated by optical microscopy(OM),X-ray diffraction(XRD),scanning electron microscopy(SEM) and energy dispersive spectrometer(EDS).The results show that the matrix is made up of a large number of cellular ferrite and a small amount of martensite,and the hard phases which consist of M2B,M3C and M8(B,C) are contained in the eutectic structure,... |
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| Keywords: | high boron hardfacing flux-cored wire abrasion resistance hypoeutectic |
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