Extreme anelastic responses in Zn80Al20 matrix composite materials containing BaTiO3 inclusion

被引：6

作者：

Dong, Liang ^{[1
]}

Stone, Donald S. ^{[2
]}

Lakes, Roderic S. ^{[1
,2
,3
]}

机构：

[1] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

[2] Univ Wisconsin, Mat Sci Program, Madison, WI 53706 USA

[3] Univ Wisconsin, Engn Mech Program, Madison, WI 53706 USA

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 04期

基金：

美国国家科学基金会;

关键词：

Metal matrix composite; Anelastic behavior; Negative stiffness; Ferroelastic materials; NEGATIVE STIFFNESS PHASE; MECHANICAL-PROPERTIES; ALLOY;

D O I：

10.1016/j.scriptamat.2011.04.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Extreme anelastic responses (stiffness greater than diamond and large amplification of damping) due to the presence of a negative stiffness phase have been observed in Zn80Al20-BaTiO3 composites not only near the tetragonal orthorhombic transformation temperatures of BaTiO3 anticipated by the classical Landau theory, but far below the Curie point of BaTiO3, which can be manipulated via specific aging processes that operate by an oxygen vacancy mechanism. The idea proposed herein can be utilized to fabricate novel composites for potential engineering applications. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：288 / 291

页数：4

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