邹广平,王丹丹,王瑞瑞,唱忠良

• 1:哈尔滨工程大学航天与建筑工程学院
• 2:中海石油技术检测有限公司

摘要(Abstract)：

对不同尺寸的镍钛形状记忆合金试样进行了静态压缩试验,结果表明,镍钛形状记忆合金在静态压缩时表现出了明显的尺寸效应:在所研究的高径比范围内,随着高径比的增加,试样在加载阶段具有硬化现象,卸载阶段具有软化现象;母相及应力诱发马氏体相弹性模量都随高径比的增加而增加;相变超弹性曲线包围的面积,即相变滞后宽度也随高径比的增加显著增加;应力诱发马氏体相变初始应力随高径比的增加具有分段性,由此推测存在一临界高径比,在高于和低于临界高径比的两个范围内,相变初始应力都随高径比的增加而降低,在临界高径比处,相变初始应力跳跃很大。

关键词(KeyWords)： 镍钛形状记忆合金;尺寸效应;高径比;相变滞后宽度

Abstract:

Keywords:

基金项目(Foundation): 教育部高等学校博士学科点科研基金资助项目(20092304110003)

作者(Author): 邹广平,王丹丹,王瑞瑞,唱忠良

DOI: 10.13289/j.issn.1009-6264.2012.12.009

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