In Situ Diffraction Experiments for the Investigation of Phase Fractions and Ordering Temperatures in Ti-44 at% Al-(3-7) at% Mo Alloys

被引：37

作者：

Schmoelzer, Thomas ^{[1
]}

Mayer, Svea ^{[1
]}

Sailer, Christian ^{[1
]}

Haupt, Frank ^{[2
]}

Guether, Volker ^{[3
]}

Staron, Peter ^{[4
]}

Liss, Klaus-Dieter ^{[5
]}

Clemens, Helmut ^{[1
]}

机构：

[1] Univ Leoben, Dept Phys Met & Mat Testing, A-8700 Leoben, Austria

[2] GfE Fremat GmbH, D-09599 Freiberg, Germany

[3] GfE Metalle & Mat GmbH, D-90431 Nurnberg, Germany

[4] Helmholtz Zentrum Geesthacht, Inst Mat Res, D-21502 Geesthacht, Germany

[5] Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2232, Australia

来源：

ADVANCED ENGINEERING MATERIALS | 2011年 / 13卷 / 04期

关键词：

TIAL-BASED ALLOY; TRANSFORMATIONS; NB;

D O I：

10.1002/adem.201000263

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Being a strong beta stabilizer, Mo has gained importance as an alloying element for so-called beta/gamma-TiAl alloys. Intermetallic TiAl-based alloys which contain a significant volume fraction of the body-centered cubic beta-phase at elevated temperatures have proven to exhibit good processing characteristics during hot-working. Unfortunately, the effect of Mo on the appearing phases and their temperature dependence is not well known. In this work, sections of the Ti-Al-Mo ternary phase diagram derived from thermodynamic calculations as well as experimental data are presented. The phase transition temperatures stated in these phase diagrams are compared with the results of high-temperature diffraction studies using high-energy synchrotron radiation. Additionally, the disordering temperature of the beta(o)-phase is determined.

引用

页码：306 / 311

页数：6

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