Microstructural evolution during the ignition/quenching of pre-heated Ti/3Al powders

被引：35

作者：

Che, H. Q. ^{[1
]}

Fan, Q. C. ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 475卷 / 1-2期

关键词：

TiAl3; intermetallics; Combustion reaction; Microstructural evolution; HIGH-TEMPERATURE SYNTHESIS; TIC-FE CERMET; COMBUSTION SYNTHESIS; INTERMETALLIC COMPOUNDS; PRECIPITATION MECHANISM; TITANIUM ALUMINIDES; LIQUID AL; SOLID TI; TIAL3; COMPOSITE;

D O I：

10.1016/j.jallcom.2008.07.035

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, a pre-heated compact of Ti/3Al powders was ignited and quenched by means of an improved combustion front quenching method (CFQM). The microstructural evolution in the quenched sample was observed with scanning electron microscopy (SEM) and analyzed with energy dispersive X-ray (EDX) spectrometry. In addition, the temperature-time profile was measured and the phase constituent of the final product was inspected by X-ray diffraction (XRD). Based on these experimental results, a dissolution-precipitation mechanism for the combustion reaction was proposed, and a model corresponding to the mechanism was drawn. Also, incompleteness of the synthesis was found, and it was because the reaction is a less-exothermic reaction. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：184 / 190

页数：7

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