CAJ | 학술논문

对NiTi形状记忆合金在冷轧变形后的不完全相变特征进行了研究.通过设计试样原始表面形状的方法,将具有不同位错密度的宏观区域引入形状记忆合金内部,使整个材料获得了复合材料的特征.结果表明,由于位错织构和马氏体变体界面的作用,使逆转变温度扩展到一个较大的温度范围,这将会进一步增加温度记忆效应的潜在应用价值.
대NiTi형상기억합금재랭알변형후적불완전상변특정진행료연구.통과설계시양원시표면형상적방법,장구유불동위착밀도적굉관구역인입형상기억합금내부,사정개재료획득료복합재료적특정.결과표명,유우위착직구화마씨체변체계면적작용,사역전변온도확전도일개교대적온도범위,저장회진일보증가온도기억효응적잠재응용개치.
Incomplete martensitie transformation characteristics of NiTi shape memory alloys after cold deforma-tion are studied. By designing the shape of the original surface curve, macroscopic domains with different dislocation density are introduced into the NiTi alloys and materials possessing the characteristics of composites are obtained. Due to the interactions between the dislocation texture and martensite variants, the reverse transformation temperatures are found to expand over a large temperature window, which gives temperature memory effect(TME) a higher potential for application.