Effect of Fe content in Fe-Ti-B system on fabricating TiB2 particulate locally reinforced steel matrix composites

被引：40

作者：

Wang, Y.

Zhang, Z. Q.

Wang, H. Y.

Ma, B. X.

Jiang, Q. C.

机构：

[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China

[2] Jilin Univ, Dept Mat Sci & Engn, Changchun 130025, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 422卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

in situ; particulate; locally reinforced; steel matrix composite; SHS;

D O I：

10.1016/j.msea.2006.02.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ TiB2, particulate 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 70 wt.% Fe, respectively, in the molten high chromium alloy steel during casting. The locally reinforced regions of the Fe-TiB2 composites with different Fe contents in the Fe-Ti-B system consist of three different regions, i.e. the Fe-rich region, the fine TiB2, particulate region and the larger TiB2 particulate region. The portion of the Fe-rich region decreased and the larger TiB2 particulate 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 TiB2 particulate region of the Fe-TiB2, composite 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-TiB2, composites. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：339 / 345

页数：7

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