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18.97.9.174
18.97.9.174
Cu-Zn-Al 형상기억 합금의 열사이클에 따른 집합조직의 변화에 관한 연구
A Study on Change of Texture During Thermal Cycling in Cu-Zn-Al Shape Memory Alloy
홍대원 , 박영구 ( D . W . Hong , Y . K . Park )
UCI I410-ECN-0102-2009-570-007370126

The shape memory effect results from the martensite transformation of each individual grain. Thus it is necessary to study the texture and its variation. In this study the change of texture during thermal cycling and it`s effect on shape memory ability are investigated. The major component of the rolling texture in the parent phase is identified (001)[110], and minor components are (112)[110], (111)[112]. {hkl}<100> fiber texture is developed at 45° from rolling direction. In the case of martensite phase, it is estimated that the major component is (011)[100] and the minor components are (105)[501], (010)[101] and (100)[001]. According to thermal cycling, severity of texture, especially (001)[110] component in parent phase and (011)[100] component in martensite phase are increased. The shape memory ability is increased with increase of thermal cycles and also increased as the direction of specimen approach to 45° from rolling direction. After first thermal cycling the temperature of transformation can be define clearly and Ms and As are raised by thermal cycling.

[자료제공 : 네이버학술정보]
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