Influence of Fe Content of Ti-Mn-Fe Alloys on Phase Constitution and Heat Treatment Behavior

被引：17

作者：

Ikeda, M. ^{[1
]}

Ueda, M. ^{[1
]}

Kinoshita, T. ^{[2
]}

Ogawa, M. ^{[3
]}

Niinomi, M. ^{[4
]}

机构：

[1] Kansai Univ, Suita, Osaka, Japan

[2] Kansai Univ, Grad Student, Suita, Osaka, Japan

[3] Daido Steel Co Ltd, Nagoya, Aichi, Japan

[4] Tohoku Univ, Res Inst Met, Sendai, Miyagi, Japan

来源：

THERMEC 2011, PTS 1-4 | 2012年 / 706-709卷

关键词：

ubiquitous metals; manganese; iron; aging; isothermal omega phase; alpha phase;

D O I：

10.4028/www.scientific.net/MSF.706-709.1893

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

If Mn could be partly substituted by Fe, Ti-Mn-Fe alloys would be less costly than Ti-Mn alloys. Furthermore, the use of iron as a beta-stabilizing element is more suitable than the use of manganese from a situation of an element strategy. In this study, 4.26 was admitted as the average ratio of valence electrons to atoms, e/a. The compositions of Mn and Fe were chosen under 4.26 as e/a. We investigated the influence Fe in selected Ti-Mn-Fe alloys by performing electrical resistivity, Vickers hardness, and X-ray diffraction measurements. In solution-treated and water-quenched 10Mn alloy, the beta and athermal omega phases were identified, while only the beta phase was identified in 8.7Mn-1Fe, 6.1Mn-3Fe, and 3.5Mn-5Fe alloys. In all alloys, equiaxial beta grains were observed by optical microscope. The resistivities at room and liquid-nitrogen temperatures and the Vickers hardness were relatively invariant across all Ti-Mn-Fe alloys, except for the Vickers hardness of the 5Fe alloy. During aging at 773 K, an isothermal omega phase precipitated in only the 3.5Mn-5Fe alloy, whereas only the alpha phase precipitated in the others.

引用

页码：1893 / +

页数：2