Effect of titanium on the ductilization of Fe-B alloys with high boron content

被引：60
|
作者：
Liu, Ying [1 ,2 ]
Li, Binghong [1 ]
Li, Jun [1 ]
He, Lin [1 ]
Gao, Shengji [1 ]
Nieh, T. G. [2 ]
机构：
[1] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610065, Peoples R China
[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
来源：
MATERIALS LETTERS | 2010年 / 64卷 / 11期
关键词：
Metals and alloys; Solidification; Microstructure; Mechanical properties; TEMPERED MARTENSITE EMBRITTLEMENT; WHITE CAST-IRON; MECHANICAL-PROPERTIES; STEELS;
D O I：
10.1016/j.matlet.2010.03.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Binary Fe-B alloys with a high boron concentration are hard but brittle. The brittleness is caused by the formation of a cast microstructure which consists of a continuous network of brittle Fe(2)B. In the present investigation, we demonstrated that, by alloying with titanium, and particularly with a titanium-to-boron atom ratio of 0.5, a fine and uniform microstructure can be formed. Also, as a result of the microstructural modification, the alloy is improved from being completely brittle (similar to zero elongation) in the Ti-free alloy to a 4% tensile elongation. The preliminary result indicates that additional rolling at 1223 K further enhances the ductility to over 16%. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：1299 / 1301
页数：3
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