• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Key Engineering Materials >Effect of Heat Treatments on the Damping Characteristics of TiNi-based Shape Memory Alloys
【24h】

Effect of Heat Treatments on the Damping Characteristics of TiNi-based Shape Memory Alloys

机译：热处理对TiNi基形状记忆合金阻尼特性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Low frequency internal friction of Ti_(49)Ni_(51) binary and Ti_(50)Ni_(40)Cu_(10) ternary shape memory alloys has been measured. The effect of solution and aging heat treatments on the damping property was examined. The temperature spectrum of internal friction for TiNi binary alloy consists, in general, of two peaks; one is a transition peak which is associated with the parent-martensite transformation and is rather unstable in a sense that it strongly depends on the frequency and decreases considerably when held at a constant temperature. The other one is a very high peak of the order of 10~(-2), which appears at around 200K. It appears both on cooling and on heating with no temperature hysteresis, and is very stable. The behavior of the peak is strongly influenced by the heat treatments. The trial of two-stage aging with a purpose of improving the damping capacity has been proved unsatisfactory. TiNiCu has a very high damping, the highest internal friction reaching 0.2, but by quenching from very high temperature, say 1373K, the damping is remarkably lowered. For the realization of high damping the quenching from a certain temperature range around 1173K seems the most preferable condition.
机译：测量了Ti_（49）Ni_（51）二元和Ti_（50）Ni_（40）Cu_（10）三元形状记忆合金的低频内摩擦。研究了固溶和时效热处理对阻尼性能的影响。 TiNi二元合金的内摩擦温度谱通常由两个峰组成；即两个峰。一个是与母马氏体转变有关的跃迁峰，在某种意义上说，它非常不稳定，因为它很大程度上取决于频率，并且在保持恒定温度时会大大降低。另一个是大约10〜（-2）的非常高的峰值，出现在200K左右。它在冷却和加热时均显示，没有温度滞后，并且非常稳定。峰的行为在很大程度上受到热处理的影响。以提高阻尼能力为目的的两阶段老化试验已被证明是不令人满意的。 TiNiCu具有很高的阻尼，最大内部摩擦达到0.2，但是通过从非常高的温度（例如1373K）淬火，阻尼显着降低。为了实现高阻尼，从1173K左右的某个温度范围淬火似乎是最优选的条件。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号