Dynamic mechanical response of a Ni45.7Ti29.3Hf20Pd5 alloy

被引：20
作者：
Acar, Emre [1 ]
机构：
[1] Erciyes Univ, Dept Aircraft Engn, TR-38039 Kayseri, Turkey
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 633卷
关键词：
Aging; Shape memory alloys; Martensite; Internal friction; Phase transformation; INTERNAL-FRICTION BEHAVIOR; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; COMPRESSIVE RESPONSE; MICROSTRUCTURE; TEMPERATURES;
D O I：
10.1016/j.msea.2015.03.023
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Phase transformation and damping properties of a Ni45.7Ti29.3Hf20Pd5 (at%) alloy was studied through Dynamic Scanning Calorimetry and Dynamic Mechanical Analysis techniques. Damping properties were characterized as functions of aging, temperature cycling, frequency and heating rate. The maximum damping capacity of the alloy was determined to be 0.215 during thermoelastic martensitic phase transformation, that is comparable to NiTi alloys. It was found that aging at temperatures ranging from 300 degrees C to 900 degrees C for 1.5 h was effective in controlling damping capacity of the alloy as well as altering the phase transformation temperatures. The damping capacity of the Ni45.7Ti29.3Hf20Pd5 alloy increased with heating rate and decreased with frequency. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：169 / 175
页数：7
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