CHARACTERIZATION OF Al-Ni COMPOSITES PRODUCED BY ULTRASONIC POWDER CONSOLIDATION

被引：2

作者：

Erdeniz, Dinc ^{[1
]}

Ando, Teiichi ^{[1
]}

机构：

[1] Northeastern Univ, Dept Mech & Ind Engn, Adv Mat Proc Lab, Boston, MA 02115 USA

来源：

TMS2011 SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND ENERGY MATERIALS | 2011年

关键词：

HIGH-TEMPERATURE SYNTHESIS; COMBUSTION SYNTHESIS; NICKEL ALUMINIDES; THERMAL-EXPLOSION; THIN-FILMS;

D O I：

10.1002/9781118062111.ch63

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Reactive composites, applicable to localized heating applications, were produced from Al and Ni powders by ultrasonic powder consolidation (UPC) at temperatures <= 573 K in 1 s. The composites exhibited a fully dense microstructure consisting of a metallurgically bonded Al matrix and nearly undeformed Ni particles distributed in the Al matrix. No indications of reactions were noted between the elements. Differential scanning calorimetry (DSC) revealed two exothermic and one endothermic peaks. The phase evolution during DSC was investigated by X-ray diffraction (XRD). The first exothermic peak initiated at 830 K was due to solid-state formation of Al3Ni and Al3Ni2. At 913 K, an endothermic peak formed due to eutectic melting of Al3Ni and Al which triggered ignition, producing the second exothermic peak at 925 K. The final reacted materials consisted of Al3Ni, Al3Ni2, AlNi and Ni.

引用

页码：553 / 559

页数：7

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THOMPSON, CV ;

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