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

页码：1299 / 1301

页数：3

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