• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Forum on New Materials >Structural Effects of Thermomechanical Processing on the Static and Dynamic Responses of Powder Metallurgy Fe-Mn-Si Based Shape Memory Alloys
【24h】

Structural Effects of Thermomechanical Processing on the Static and Dynamic Responses of Powder Metallurgy Fe-Mn-Si Based Shape Memory Alloys

机译：热机械加工对粉末冶金Fe-Mn-Si形状记忆合金静态响应的结构效应

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fe-14Mn-6Si-9Cr-5Ni (wt. %) shape memory alloys (SMAs) were produced by powder metallurgy (PM) combined with Mechanical Alloying (MA). The specimens were pressed and sintered under Ar atmosphere from as blended powders as well as from mixtures of as blended and 10, 20, 30 and 40 vol. % MA'ed powders, respectively. The five groups of sintered specimens were hot-rolled, spark-erosion cut and solution treated at five temperatures (923, 1023, ..., 1373K/ 300 s/ water). Tensile loading-unloading tests were performed in order to obtain stress-induced martensite at different pre-straining degrees. The static responses of the twenty five types of specimens were evaluated by means of the surface areas under unloading curve (E2) and between loading and unloading curves (E1) which were used for determining static internal friction, Q~(-1). The dynamic responses of the undeformed specimens were determined by Dynamic Mechanical Analysis (DMA) performed at room temperature with a three-point-bending specimen holder in strain sweep mode. The structure of the twenty five specimens was analyzed X-ray diffraction. The effects of MA fraction were correlated with static and dynamic responses via structural changes.
机译：Fe-14MN-6SI-9CR-5NI（WT.％）形状记忆合金（SMA）由粉末冶金（PM）与机械合金化（MA）结合生产。根据混合粉末以及混合和10,20,30和40体积的混合粉末，将样品按压并烧结。分别为MA'ED粉末。将五组烧结标本被热轧，火花腐蚀切割和在五个温度下处理的溶液（923,1023，...，1373k / 300 s /水）。进行拉伸加载卸载试验，以便在不同预抗度度下获得应力诱导的马氏体。通过在卸载曲线（E2）下的表面区域和用于确定静态内部摩擦，Q〜（-1）的装载和卸载曲线（E1）之间的表面积评估二十五种样本的静响应。未变形样品的动态响应通过在室温下在室温下进行的动态机械分析（DMA）测定，其中三点弯曲的标本保持器处于应变扫描模式。分析了二十五个标本的结构X射线衍射。通过结构变化与静态和动态反应相关的效应。

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