Effect of Fe content in Fe–Ti–B system on fabricating TiB2 particulate locally reinforced steel matrix composites
Effect of Fe content in Fe–Ti–B system on fabricating TiB2 particulate locally reinforced steel matrix composites
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DOI：
10.1016/j.msea.2006.02.012
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发表时间：
2006-04
期刊：
影响因子：
6.4
通讯作者：
Y. Wang;Zuoming Zhang;Hongsu Wang;B. Ma;Q. Jiang
中科院分区：
文献类型：
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作者：
Y. Wang;Zuoming Zhang;Hongsu Wang;B. Ma;Q. Jiang
在含量为10、30、50和70重量%的Fe-Ti-B体系中，通过自蔓延高温合成（SHS）反应成功制备了原位TiB 2颗粒局部增强钢基复合材料Fe，分别在铸造过程中熔融高铬合金钢中。Fe-Ti-B系中不同Fe含量的Fe-TiB 2复合材料的局部增强区由富Fe区、TiB 2细颗粒区和TiB 2大颗粒区三个不同的区域组成。随着Fe含量的增加，Fe-Ti-B体系中富Fe区的比例减少，TiB 2颗粒较大的区域变得不清晰。另外，70 Fe-Ti-B体系合成的Fe-TiB 2复合材料中，仅在TiB 2细颗粒区发现少量微孔，Fe含量对Fe-TiB 2复合材料局部增强区的耐磨性有明显影响。
In situ TiB2particulate locally reinforced steel matrix composites were successfully fabricated by self-propagating high-temperature synthesis (SHS) reactions in a Fe–Ti–B system containing 10, 30, 50 and 70wt.% Fe, respectively, in the molten high chromium alloy steel during casting. The locally reinforced regions of the Fe–TiB2composites with different Fe contents in the Fe–Ti–B system consist of three different regions, i.e. the Fe-rich region, the fine TiB2particulate region and the larger TiB2particulate region. The portion of the Fe-rich region decreased and the larger TiB2particulate region became unclear with the increase in Fe content in the Fe–Ti–B system. In addition, only a small amount of micropores is found in the fine TiB2particulate region of the Fe–TiB2composite synthesized in a 70Fe–Ti–B system, and the Fe content has obvious effect on the wear resistance of the locally reinforced region of the Fe–TiB2composites.