高硼铸钢的研究进展

发布时间：2018-05-25 17:38

本文选题：高硼铸钢 + 硼化物　；参考：《材料导报》2017年05期

【摘要】：高硼铸钢是以B为主要合金元素的新型耐磨材料。围绕高硼铸钢组织中的Fe_2B,简单介绍了合金元素对高硼铸钢组织及力学性能的影响。然而,除耐磨以外,高硼铸钢在耐高温熔体(Zn、Al)腐蚀方面也展现出优异的性能。结合笔者已有的研究成果,重点介绍了新型高硼铸钢的耐铝液腐蚀及耐铝液腐蚀-磨损性能,硼化物对改善高硼铸钢的耐铝液腐蚀及耐铝液腐蚀-磨损性能起到了非常重要的作用。富Cr和富Mo的Fe_2B在铝液腐蚀过程中表现出不同的行为:富Cr的Fe_2B与铝液反应生成周期性层片结构,而富Mo的Fe_2B则是发生断裂、剥落;在铝液腐蚀-磨损过程中,初生富Cr的Fe_2B发生Fe元素的优先溶解,之后在磨损的作用下开裂、剥落,但相关机理还需深入研究。最后,对高硼铸钢的研究进行了展望。
[Abstract]:High boron cast steel is a new wear-resistant material with B as the main alloy element. The effect of alloying elements on the microstructure and mechanical properties of high boron cast steel was introduced. However, in addition to wear resistance, high boron cast steel also exhibits excellent corrosion resistance to high temperature melt. Combined with the author's existing research results, the corrosion resistance of the new type of high boron cast steel and the corrosion and wear resistance of the molten aluminum are introduced. Boride plays an important role in improving the corrosion resistance and corrosion-wear resistance of high boron cast steel. Cr-rich Fe_2B and Mo-rich Fe_2B exhibit different behaviors in the process of molten aluminum corrosion: Cr-rich Fe_2B reacts with molten aluminum to form periodic lamellar structure, while Mo rich Fe_2B is fractured and spalling, and in the process of corrosion and wear of molten aluminum, it is found that, in the process of corrosion and wear of molten aluminum, Cr rich Fe_2B reacts with aluminum liquid to form periodic lamellar structure. The primary Cr-rich Fe_2B dissolves preferentially, then cracks and flakes under the action of wear, but the related mechanism needs to be further studied. Finally, the research of high boron cast steel is prospected.
【作者单位】：海南大学机电工程学院;
【基金】：海南大学科研启动基金(kyqd1629) 广东省金属新材料制备与成形重点实验室开放课题(GJ201609) 国家自然科学基金(51404084)
【分类号】：TG142.1

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