Bulk ultra-fine eutectic structure in Ti-Fe-base alloys
Bulk ultra-fine eutectic structure in Ti-Fe-base alloys
复制标题
DOI：
10.1016/j.jallcom.2006.08.163
复制
发表时间：
2007-05-31
影响因子：
6.2
通讯作者：
Eckert, J.
中科院分区：
文献类型：
--
作者：
Das, J.;Kim, K. B.;Eckert, J.
采用电弧熔炼和冷坩埚铸棒法从Ti_（70.5）Fe_（29.5）二元合金熔体中缓慢冷却，获得了超细共晶组织。添加3.85at.% Sn对Ti-Fe二元合金共晶组织形态的影响，使FeTi（Pm 3 m）相的体积分数增加。在单轴压缩载荷下观察到三元合金的塑性变形能力显着改善，导致16%的失效应变，而二元Ti70.5Fe29.5的失效应变为3.4%。共晶团的形态、细化程度和β-Ti相的过饱和度是提高超细共晶合金塑性的关键因素。(C)2006 Elsevier B. V.保留所有权利。
An ultra-fine eutectic structure has been obtained in the Ti70.5Fe29.5 binary alloy by slow cooling from the melt through arc melting and cold crucible rod casting. The addition of 3.85 at.% Sn to the binary Ti-Fe alloy induces a change of the morphology of the eutectic and increases the volume fraction of the FeTi (Pm3m) phase. A significant improvement of the plastic deformability of the ternary alloy has been observed under uniaxial compressive loading resulting in 16% strain to failure compared to 3.4% for binary Ti70.5Fe29.5. The morphology of the eutectic colonies, their refinement and supersaturation of the beta-Ti phase are crucial factors for improving the ductility of the ultra-fine eutectic alloys. (C) 2006 Elsevier B.V. All rights reserved.