采用空冷和水冷不同铸型方式,研究冷却速度对离心铸造高硼高速钢辊环组织的影响,制备出辊环.结果表明:铸态高硼高速钢辊环组织由树枝状基体和硼碳化物组成.快速冷却下,基体组织全部转化为马氏体；硼碳化物的类型没有发生变化,由M2(B,C)、M3(B,C)以及M23(B,C)6组成.随着冷却速率的增加,基体晶粒尺寸减小,硼碳化物数量减少,鱼骨状硼碳化物向筛网状转变,局部出现缩颈和孤立现象.冷却速度的增加影响了合金元素在基体和硬质相中的分布,硬质相的显微硬度不变,基体硬度略有增加.空冷砂型离心铸造时,随着距辊环外边缘距离的增加,出现菊花片状的包晶组织,并且数量也逐渐增加.
参考文献
| [1] | 冯锡兰,蒋志强,符寒光,郭友寒.新型高硼合金钢的研究[J].金属热处理,2006(z1):57-60. |
| [2] | Dogan O N;Hawk J A;Rice J.Comparison of three Ni-hard I alloys[A].New Orleans,LA,United states,2004:451-455. |
| [3] | C. Martini;G. Palombarini;G. Poli;D. Prandstraller .Sliding and abrasive wear behaviour of boride coatings[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2004(6):608-613. |
| [4] | Christodoulou P;Calos N .A step towards designing Fe-Cr B-C cast alloys[J].Materials Science and Engineering A,2001,301(20):103-117. |
| [5] | 郭长庆,高守忠.新型铁基耐磨材料FCB合金[J].铸造,2004(10):761-764. |
| [6] | Aso S;Hachisuka M;Goto S .Phase transformation of iron matrix of Fe-15mass% Cr-C-B alloys[J].Journal of the Japan Institute of Metals,1988,61(07):567-573. |
| [7] | Hanguang F;Qiang X;Kuang jiacai et al.Effect of rare earth and titanium on the microstructures and properties of low carbon Fe-B cast steel[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,466:160-165. |
| [8] | ZHONGLI LIU;XIANG CHEN;YANXIANG LI .Effect of Chromium on Microstructure and Properties of High Boron White Cast Iron[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,2008(3):636-641. |
| [9] | FU Han-gnang;YANG Li-fen;JIANG Zhi-qiang et al.Effect of quenching temperature on microstructure and mechanical properties of Fe-B-Ti alloy[J].INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2007,98(06):521-525. |
| [10] | 符寒光;邢建东.高速钢轧辊制造技术[M].北京:冶金工业出版社,2007 |
| [11] | ASM Handbook,Volume 3.alloy Phase Diagrams[S].ASM International,Materials Park,Ohio,1992. |
| [12] | 本溪钢铁公司第一炼钢厂.硼钢[M].北京:冶金工业出版社,1977 |
| [13] | Ambroza P;Kavaliauskiene L.Influence of carbon and boron on the properties of deposited layer[J].Mechanika,2004(04):59-63. |
| [14] | GUO Chang-qing .Improving ductility and toughness of Fe-C-B cast iron[D].The University of Queensland,2002. |
| [15] | 宋绪丁 .高硼铁基系列铸造耐磨合金研制及其应用研究[D].长安大学,2008. |
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